Merge pull request #87 from Syngnat/release/0.3.6

✨ feat(datasource): 新增 MariaDB、Vastbase、HighGo、MongoDB、SQL Server 五种数据源支持

- MariaDB：MySQL驱动占位，默认端口3306，归类关系型数据库
- Vastbase（海量）：PG驱动占位，默认端口5432，归类国产数据库
- HighGo（瀚高）：PG驱动，支持SM3认证扩展，归类国产数据库
- MongoDB：官方驱动实现，归类NoSQL
- SQL Server：微软官方驱动实现，归类关系型数据库
- ConnectionModal 新增数据源选项卡与默认端口配置
- database.go 新增5种类型的实例化分支
- 同步更新 db_context、methods_db、sql_sanitize、methods_file、sql_helpers 类型判断

🔧 fix(appearance): 优化 Windows 透明效果体验并调整透明度滑块灵敏度

- Windows 平台限制：隐藏模糊滑块，显示系统 Acrylic 效果说明
- 透明度因子调整：Windows 从 0.20 调整为 0.70，变化更平滑
- 透明度因子调整：macOS 从 0.20 调整为 0.60，变化更平滑
- 用户体验：修复滑块从 100% 拉到 95% 时透明度变化过于剧烈的问题

build/darwin/Info.dev.plist

@@ -8,7 +8,7 @@
         <key>CFBundleExecutable</key>
         <string>{{.OutputFilename}}</string>
         <key>CFBundleIdentifier</key>
-        <string>com.wails.{{.Name}}</string>
+        <string>com.wails.{{.Name}}.dev</string>
         <key>CFBundleVersion</key>
         <string>{{.Info.ProductVersion}}</string>
         <key>CFBundleGetInfoString</key>

docs/HighGo_Optional_Code_Changes.md

@@ -0,0 +1,164 @@
+# HighGo 可选代码优化建议
+
+## 一、sslmode 配置优化
+
+### 当前状态
+
+**文件**：`internal/db/highgo_impl.go:43`
+
+**当前代码**：
+```go
+q.Set("sslmode", "disable")
+```
+
+### 建议修改
+
+根据瀚高官方文档，sslmode 的默认值应该是 `require`。建议修改为：
+
+```go
+q.Set("sslmode", "require")
+```
+
+### 修改原因
+
+1. **符合官方规范**：瀚高官方文档明确指出默认 sslmode 为 `require`
+2. **安全性提升**：启用 SSL 加密可以保护数据传输安全
+3. **生产环境最佳实践**：生产环境应该启用 SSL 连接
+
+### 是否需要修改？
+
+**不一定需要修改**，取决于您的实际环境：
+
+#### 保持 `disable` 的场景：
+- ✅ 开发/测试环境
+- ✅ HighGo 服务器未配置 SSL 证书
+- ✅ 内网环境，不需要加密传输
+- ✅ 快速测试连接功能
+
+#### 修改为 `require` 的场景：
+- ✅ 生产环境
+- ✅ HighGo 服务器已配置 SSL 证书
+- ✅ 跨网络连接，需要加密保护
+- ✅ 符合安全合规要求
+
+### 如何修改
+
+如果您决定修改，可以使用以下命令：
+
+**方式 1：直接修改（固定为 require）**
+```go
+// 文件：internal/db/highgo_impl.go 第 43 行
+q.Set("sslmode", "require")
+```
+
+**方式 2：可配置（推荐）**
+
+如果希望让用户可以选择 sslmode，可以修改为：
+
+```go
+// 在 getDSN 方法中
+sslmode := "disable" // 默认值
+if config.SSLMode != "" {
+    sslmode = config.SSLMode
+}
+q.Set("sslmode", sslmode)
+```
+
+然后在 `internal/connection/connection.go` 的 `ConnectionConfig` 结构体中添加字段：
+
+```go
+type ConnectionConfig struct {
+    // ... 现有字段
+    SSLMode string `json:"sslMode,omitempty"` // SSL 模式：disable, require, verify-ca, verify-full
+}
+```
+
+前端 UI 也需要相应添加 sslmode 选择控件。
+
+### 测试建议
+
+修改后请务必测试：
+
+1. **SSL 启用测试**：
+   - 连接配置了 SSL 的 HighGo 服务器
+   - 验证连接成功
+
+2. **SSL 禁用测试**：
+   - 连接未配置 SSL 的 HighGo 服务器
+   - 验证是否会报错（如果设置为 `require` 会报错）
+
+3. **兼容性测试**：
+   - 测试现有的 HighGo 连接配置是否仍然可用
+
+## 二、其他可选优化
+
+### 1. 默认端口提示优化
+
+**文件**：`frontend/src/components/ConnectionModal.tsx`
+
+**当前状态**：HighGo 的默认端口已正确设置为 5866
+
+**建议**：无需修改，已符合官方规范
+
+### 2. 默认数据库名称
+
+**文件**：`internal/db/highgo_impl.go:33`
+
+**当前代码**：
+```go
+if dbname == "" {
+    dbname = "highgo" // HighGo default database
+}
+```
+
+**建议**：无需修改，已符合官方规范（默认数据库为 `highgo`）
+
+### 3. 默认用户名
+
+**当前状态**：未在代码中硬编码默认用户名
+
+**瀚高官方默认**：`sysdba`
+
+**建议**：
+- 可以在前端 UI 的 HighGo 连接表单中，将用户名输入框的 placeholder 设置为 `sysdba`
+- 但不建议硬编码默认值，让用户自行输入更安全
+
+## 三、总结
+
+### 必须修改的项目
+- ✅ **无**（当前代码已基本符合规范）
+
+### 建议修改的项目
+1. **sslmode 配置**（根据实际环境决定）
+   - 开发环境：保持 `disable`
+   - 生产环境：修改为 `require`
+
+### 可选优化的项目
+1. 将 sslmode 改为可配置（需要修改前后端）
+2. 前端 UI 添加 sslmode 选择控件
+3. 用户名输入框添加 `sysdba` 提示
+
+## 四、修改优先级
+
+**优先级 1（高）**：
+- 集成瀚高 SM3 驱动（参考 `HighGo_SM3_Integration_Guide.md`）
+
+**优先级 2（中）**：
+- 根据部署环境调整 sslmode 配置
+
+**优先级 3（低）**：
+- 将 sslmode 改为可配置
+- UI 优化（placeholder 提示等）
+
+## 五、下一步行动
+
+建议按以下顺序执行：
+
+1. **先集成 SM3 驱动**（参考集成指南）
+2. **测试基本连接功能**（使用 sslmode=disable）
+3. **如果生产环境需要 SSL**，再修改 sslmode 配置
+4. **验证所有功能正常**后，考虑可选优化项
+
+---
+
+**注意**：所有代码修改都应该在集成 SM3 驱动并验证基本功能正常后再进行。

docs/HighGo_SM3_Integration_Guide.md

@@ -0,0 +1,179 @@
+# HighGo SM3 国密驱动集成指南
+
+## 一、背景说明
+
+HighGo（瀚高）数据库需要使用支持 SM3 国密认证的 PostgreSQL 驱动。瀚高官方提供了基于 `lib/pq` 的安全增强版本。
+
+## 二、集成步骤
+
+### 步骤 1：下载瀚高 pq 驱动
+
+1. 访问百度网盘链接：
+   ```
+   https://pan.baidu.com/s/1xuz6uJz0utRgKWecXhpOiA?pwd=o0tj
+   ```
+
+2. 下载驱动源码压缩包
+
+### 步骤 2：放置驱动源码
+
+1. 在项目根目录创建 vendor 目录（如果不存在）：
+   ```bash
+   mkdir -p vendor/highgo-pq
+   ```
+
+2. 解压下载的驱动源码到 `vendor/highgo-pq/` 目录
+
+3. 确保目录结构如下：
+   ```
+   GoNavi/
+   ├── vendor/
+   │   └── highgo-pq/
+   │       ├── go.mod
+   │       ├── conn.go
+   │       ├── ... (其他 pq 驱动源文件)
+   ```
+
+### 步骤 3：修改 go.mod
+
+在 `go.mod` 文件末尾添加 replace 指令：
+
+```go
+replace github.com/lib/pq => ./vendor/highgo-pq
+```
+
+完整示例：
+```go
+module GoNavi-Wails
+
+go 1.24.3
+
+require (
+    // ... 现有依赖
+    github.com/lib/pq v1.11.1
+    // ... 其他依赖
+)
+
+// 在文件末尾添加
+replace github.com/lib/pq => ./vendor/highgo-pq
+```
+
+### 步骤 4：更新 HighGo 连接配置（可选）
+
+根据瀚高官方文档，建议修改 `internal/db/highgo_impl.go:43` 的 sslmode：
+
+**当前代码**：
+```go
+q.Set("sslmode", "disable")
+```
+
+**建议修改为**（瀚高默认）：
+```go
+q.Set("sslmode", "require")
+```
+
+> ⚠️ 注意：如果您的 HighGo 服务器未配置 SSL，保持 `disable` 即可。
+
+### 步骤 5：验证集成
+
+1. 清理依赖缓存：
+   ```bash
+   go clean -modcache
+   ```
+
+2. 重新下载依赖：
+   ```bash
+   go mod download
+   ```
+
+3. 编译项目：
+   ```bash
+   go build ./...
+   ```
+
+4. 测试 HighGo 连接：
+   - 启动应用
+   - 创建 HighGo 连接
+   - 测试连接是否成功
+
+## 三、重要说明
+
+### ⚠️ 影响范围
+
+使用 `go.mod replace` 会**全局替换** `github.com/lib/pq` 驱动，这意味着：
+
+1. **PostgreSQL 连接也会使用瀚高驱动**
+2. **需要验证瀚高驱动对标准 PostgreSQL 的兼容性**
+
+### 兼容性验证
+
+集成后，请务必测试：
+
+1. ✅ HighGo 数据库连接（SM3 认证）
+2. ✅ 标准 PostgreSQL 连接（确保仍然可用）
+
+如果标准 PostgreSQL 连接失败，说明瀚高驱动不完全兼容，需要考虑其他方案。
+
+### 回滚方案
+
+如果集成后出现问题，可以快速回滚：
+
+1. 删除 `go.mod` 中的 replace 指令
+2. 删除 `vendor/highgo-pq/` 目录
+3. 运行 `go mod tidy`
+4. 重新编译
+
+## 四、瀚高驱动特性
+
+根据官方文档：
+
+- **包路径**：`github.com/lib/pq`（与标准版相同）
+- **驱动名**：`postgres`（与标准版相同）
+- **SM3 支持**：自动启用国密认证
+- **默认端口**：5866
+- **默认数据库**：`highgo`
+- **默认用户**：`sysdba`
+- **sslmode 默认**：`require`
+
+## 五、故障排查
+
+### 问题 1：编译失败
+
+**现象**：`go build` 报错找不到 `github.com/lib/pq`
+
+**解决**：
+1. 检查 `vendor/highgo-pq/` 目录是否存在
+2. 检查 `go.mod` 中 replace 路径是否正确
+3. 运行 `go mod download`
+
+### 问题 2：HighGo 连接失败
+
+**现象**：连接 HighGo 时报认证错误
+
+**解决**：
+1. 确认瀚高驱动已正确替换（检查 `go.mod`）
+2. 确认 HighGo 服务器支持 SM3 认证
+3. 检查用户名、密码、端口是否正确
+
+### 问题 3：PostgreSQL 连接失败
+
+**现象**：集成后标准 PostgreSQL 无法连接
+
+**解决**：
+1. 这说明瀚高驱动不完全兼容标准 PostgreSQL
+2. 需要考虑条件编译或其他隔离方案
+3. 临时回滚：删除 replace 指令
+
+## 六、后续优化建议
+
+如果发现瀚高驱动与标准 PostgreSQL 不兼容，可以考虑：
+
+1. **条件编译**：使用 Go build tags 分别编译两个版本
+2. **动态驱动注册**：如果瀚高驱动支持自定义驱动名
+3. **联系瀚高技术支持**：咨询官方兼容性方案
+
+## 七、参考资料
+
+- 瀚高官方文档：https://www.highgo.com/document/zh-cn/application/pq%E6%8E%A5%E5%8F%A3.html
+- 瀚高驱动下载：https://pan.baidu.com/s/1xuz6uJz0utRgKWecXhpOiA?pwd=o0tj
+- 标准 lib/pq：https://github.com/lib/pq

frontend/src/App.tsx

@@ -1,7 +1,8 @@
 import React, { useState, useEffect } from 'react';
-import { Layout, Button, ConfigProvider, theme, Dropdown, MenuProps, message, Modal, Spin, Slider, Popover } from 'antd';
+import { Layout, Button, ConfigProvider, theme, Dropdown, MenuProps, message, Modal, Spin, Slider, Progress } from 'antd';
 import zhCN from 'antd/locale/zh_CN';
 import { PlusOutlined, BulbOutlined, BulbFilled, ConsoleSqlOutlined, UploadOutlined, DownloadOutlined, CloudDownloadOutlined, BugOutlined, ToolOutlined, InfoCircleOutlined, GithubOutlined, SkinOutlined, CheckOutlined, MinusOutlined, BorderOutlined, CloseOutlined, SettingOutlined } from '@ant-design/icons';
+import { EventsOn } from '../wailsjs/runtime/runtime';
 import Sidebar from './components/Sidebar';
 import TabManager from './components/TabManager';
 import ConnectionModal from './components/ConnectionModal';
@@ -9,7 +10,7 @@ import DataSyncModal from './components/DataSyncModal';
 import LogPanel from './components/LogPanel';
 import { useStore } from './store';
 import { SavedConnection } from './types';
-import { blurToFilter, normalizeBlurForPlatform, normalizeOpacityForPlatform } from './utils/appearance';
+import { blurToFilter, normalizeBlurForPlatform, normalizeOpacityForPlatform, isWindowsPlatform } from './utils/appearance';
 import './App.css';
 
 const { Sider, Content } = Layout;
@@ -52,6 +53,7 @@ function App() {
   const updateCheckInFlightRef = React.useRef(false);
   const updateDownloadInFlightRef = React.useRef(false);
   const updateDownloadedVersionRef = React.useRef<string | null>(null);
+  const updateDownloadMetaRef = React.useRef<UpdateDownloadResultData | null>(null);
   const updateDeferredVersionRef = React.useRef<string | null>(null);
   const updateNotifiedVersionRef = React.useRef<string | null>(null);
   const updateMutedVersionRef = React.useRef<string | null>(null);
@@ -60,6 +62,23 @@ function App() {
   const [aboutInfo, setAboutInfo] = useState<{ version: string; author: string; buildTime?: string; repoUrl?: string; issueUrl?: string; releaseUrl?: string } | null>(null);
   const [aboutUpdateStatus, setAboutUpdateStatus] = useState<string>('');
   const [lastUpdateInfo, setLastUpdateInfo] = useState<UpdateInfo | null>(null);
+  const [updateDownloadProgress, setUpdateDownloadProgress] = useState<{
+      open: boolean;
+      version: string;
+      status: 'idle' | 'start' | 'downloading' | 'done' | 'error';
+      percent: number;
+      downloaded: number;
+      total: number;
+      message: string;
+  }>({
+      open: false,
+      version: '',
+      status: 'idle',
+      percent: 0,
+      downloaded: 0,
+      total: 0,
+      message: ''
+  });
 
   type UpdateInfo = {
       hasUpdate: boolean;
@@ -73,10 +92,51 @@ function App() {
       sha256?: string;
   };
 
-  const promptRestartForUpdate = (info: UpdateInfo) => {
+  type UpdateDownloadProgressEvent = {
+      status?: 'start' | 'downloading' | 'done' | 'error';
+      percent?: number;
+      downloaded?: number;
+      total?: number;
+      message?: string;
+  };
+
+  type UpdateDownloadResultData = {
+      info?: UpdateInfo;
+      downloadPath?: string;
+      installLogPath?: string;
+      installTarget?: string;
+      platform?: string;
+      autoRelaunch?: boolean;
+  };
+
+  const formatBytes = (bytes?: number) => {
+      if (!bytes || bytes <= 0) return '0 B';
+      const units = ['B', 'KB', 'MB', 'GB', 'TB'];
+      let value = bytes;
+      let idx = 0;
+      while (value >= 1024 && idx < units.length - 1) {
+          value /= 1024;
+          idx++;
+      }
+      return `${value.toFixed(idx === 0 ? 0 : 1)} ${units[idx]}`;
+  };
+
+  const promptRestartForUpdate = (info: UpdateInfo, resultData?: UpdateDownloadResultData) => {
+      const downloadPathHint = resultData?.downloadPath
+          ? `更新包路径：${resultData.downloadPath}`
+          : '';
+      const installLogHint = resultData?.installLogPath
+          ? `安装日志：${resultData.installLogPath}`
+          : '';
       Modal.confirm({
           title: '更新已下载',
-          content: `版本 ${info.latestVersion} 已下载完成，是否现在重启完成更新？`,
+          content: (
+              <div style={{ display: 'flex', flexDirection: 'column', gap: 6, userSelect: 'text' }}>
+                  <div>{`版本 ${info.latestVersion} 已下载完成，是否现在重启完成更新？`}</div>
+                  {downloadPathHint ? <div style={{ fontSize: 12, color: '#8c8c8c' }}>{downloadPathHint}</div> : null}
+                  {installLogHint ? <div style={{ fontSize: 12, color: '#8c8c8c' }}>{installLogHint}</div> : null}
+              </div>
+          ),
           okText: '立即重启',
           cancelText: '稍后',
           onOk: async () => {
@@ -96,25 +156,49 @@ function App() {
       if (updateDownloadInFlightRef.current) return;
       if (updateDownloadedVersionRef.current === info.latestVersion) {
           if (!silent) {
-              message.info(`更新包已就绪（${info.latestVersion}）`);
+              const cachedDownloadPath = updateDownloadMetaRef.current?.downloadPath;
+              message.info(cachedDownloadPath ? `更新包已就绪（${info.latestVersion}），路径：${cachedDownloadPath}` : `更新包已就绪（${info.latestVersion}）`);
           }
           if (!silent || updateDeferredVersionRef.current !== info.latestVersion) {
-              promptRestartForUpdate(info);
+              promptRestartForUpdate(info, updateDownloadMetaRef.current || undefined);
           }
           return;
       }
       updateDownloadInFlightRef.current = true;
+      updateDownloadMetaRef.current = null;
       const key = 'update-download';
+      setUpdateDownloadProgress({
+          open: true,
+          version: info.latestVersion,
+          status: 'start',
+          percent: 0,
+          downloaded: 0,
+          total: info.assetSize || 0,
+          message: ''
+      });
       message.loading({ content: `正在下载更新 ${info.latestVersion}...`, key, duration: 0 });
       const res = await (window as any).go.app.App.DownloadUpdate();
       updateDownloadInFlightRef.current = false;
       if (res?.success) {
+          const resultData = (res?.data || {}) as UpdateDownloadResultData;
+          updateDownloadMetaRef.current = resultData;
           updateDownloadedVersionRef.current = info.latestVersion;
-          message.success({ content: '更新下载完成', key, duration: 2 });
+          setUpdateDownloadProgress(prev => ({ ...prev, status: 'done', percent: 100, open: false }));
+          if (resultData?.downloadPath) {
+              message.success({ content: `更新下载完成，更新包路径：${resultData.downloadPath}`, key, duration: 5 });
+          } else {
+              message.success({ content: '更新下载完成', key, duration: 2 });
+          }
+          setAboutUpdateStatus(`发现新版本 ${info.latestVersion}（已下载，待重启安装）`);
           if (!silent || updateDeferredVersionRef.current !== info.latestVersion) {
-              promptRestartForUpdate(info);
+              promptRestartForUpdate(info, resultData);
           }
       } else {
+          setUpdateDownloadProgress(prev => ({
+              ...prev,
+              status: 'error',
+              message: res?.message || '未知错误'
+          }));
           message.error({ content: '更新下载失败: ' + (res?.message || '未知错误'), key, duration: 4 });
       }
   }, []);
@@ -329,6 +413,14 @@ function App() {
       setIsModalOpen(false);
       setEditingConnection(null);
   };
+
+  const handleTitleBarDoubleClick = (e: React.MouseEvent<HTMLDivElement>) => {
+      const target = e.target as HTMLElement | null;
+      if (target?.closest('[data-no-titlebar-toggle="true"]')) {
+          return;
+      }
+      (window as any).runtime.WindowToggleMaximise();
+  };
   
   // Sidebar Resizing
   const [sidebarWidth, setSidebarWidth] = useState(300);
@@ -422,6 +514,35 @@ function App() {
       };
   }, [checkForUpdates]);
 
+  useEffect(() => {
+      const offDownloadProgress = EventsOn('update:download-progress', (event: UpdateDownloadProgressEvent) => {
+          if (!event) return;
+          const status = event.status || 'downloading';
+          const nextStatus: 'idle' | 'start' | 'downloading' | 'done' | 'error' =
+              status === 'start' || status === 'downloading' || status === 'done' || status === 'error'
+                  ? status
+                  : 'downloading';
+          const downloaded = typeof event.downloaded === 'number' ? event.downloaded : 0;
+          const total = typeof event.total === 'number' ? event.total : 0;
+          const percentRaw = typeof event.percent === 'number'
+              ? event.percent
+              : (total > 0 ? (downloaded / total) * 100 : 0);
+          const percent = Math.max(0, Math.min(100, percentRaw));
+          setUpdateDownloadProgress(prev => ({
+              open: nextStatus === 'start' || nextStatus === 'downloading' || nextStatus === 'error',
+              version: prev.version,
+              status: nextStatus,
+              percent,
+              downloaded,
+              total,
+              message: String(event.message || '')
+          }));
+      });
+      return () => {
+          offDownloadProgress();
+      };
+  }, []);
+
   return (
     <ConfigProvider
         locale={zhCN}
@@ -472,6 +593,7 @@ function App() {
         }}>
           {/* Custom Title Bar */}
           <div
+            onDoubleClick={handleTitleBarDoubleClick}
             style={{
                 height: 32,
                 flexShrink: 0,
@@ -492,7 +614,11 @@ function App() {
                   {/* Logo can be added here if available */}
                   GoNavi
               </div>
-              <div style={{ display: 'flex', height: '100%', WebkitAppRegion: 'no-drag', '--wails-draggable': 'no-drag' } as any}>
+              <div
+                data-no-titlebar-toggle="true"
+                onDoubleClick={(e) => e.stopPropagation()}
+                style={{ display: 'flex', height: '100%', WebkitAppRegion: 'no-drag', '--wails-draggable': 'no-drag' } as any}
+              >
                   <Button 
                     type="text" 
                     icon={<MinusOutlined />} 
@@ -543,7 +669,7 @@ function App() {
           <Sider 
             width={sidebarWidth} 
             style={{ 
-                borderRight: 'none', 
+                borderRight: '1px solid rgba(128,128,128,0.2)',
                 position: 'relative',
                 background: bgMain
             }}
@@ -679,31 +805,89 @@ function App() {
                             min={0.1} 
                             max={1.0} 
                             step={0.05} 
-                            value={appearance.opacity ?? 0.95} 
+                            value={appearance.opacity ?? 1.0} 
                             onChange={(v) => setAppearance({ opacity: v })} 
                             style={{ flex: 1 }}
                           />
-                          <span style={{ width: 40 }}>{Math.round((appearance.opacity ?? 0.95) * 100)}%</span>
+                          <span style={{ width: 40 }}>{Math.round((appearance.opacity ?? 1.0) * 100)}%</span>
                       </div>
                   </div>
                   <div>
                       <div style={{ marginBottom: 8, fontWeight: 500 }}>高斯模糊 (Blur)</div>
-                      <div style={{ display: 'flex', alignItems: 'center', gap: 16 }}>
-                          <Slider 
-                            min={0} 
-                            max={20} 
-                            value={appearance.blur ?? 0} 
-                            onChange={(v) => setAppearance({ blur: v })} 
-                            style={{ flex: 1 }}
-                          />
-                          <span style={{ width: 40 }}>{appearance.blur}px</span>
-                      </div>
-                      <div style={{ fontSize: 12, color: '#888', marginTop: 4 }}>
-                          * 仅控制应用内覆盖层的模糊效果
-                      </div>
+                      {isWindowsPlatform() ? (
+                          <div style={{ fontSize: 12, color: '#888' }}>
+                              Windows 使用系统 Acrylic 效果，模糊程度由系统控制
+                          </div>
+                      ) : (
+                          <>
+                              <div style={{ display: 'flex', alignItems: 'center', gap: 16 }}>
+                                  <Slider
+                                    min={0}
+                                    max={20}
+                                    value={appearance.blur ?? 0}
+                                    onChange={(v) => setAppearance({ blur: v })}
+                                    style={{ flex: 1 }}
+                                  />
+                                  <span style={{ width: 40 }}>{appearance.blur}px</span>
+                              </div>
+                              <div style={{ fontSize: 12, color: '#888', marginTop: 4 }}>
+                                  * 仅控制应用内覆盖层的模糊效果
+                              </div>
+                          </>
+                      )}
                   </div>
               </div>
           </Modal>
+
+          <Modal
+              title={updateDownloadProgress.version ? `下载更新 ${updateDownloadProgress.version}` : '下载更新'}
+              open={updateDownloadProgress.open}
+              closable={updateDownloadProgress.status === 'error'}
+              maskClosable={false}
+              keyboard={updateDownloadProgress.status === 'error'}
+              onCancel={() => {
+                  if (updateDownloadProgress.status === 'error') {
+                      setUpdateDownloadProgress({
+                          open: false,
+                          version: '',
+                          status: 'idle',
+                          percent: 0,
+                          downloaded: 0,
+                          total: 0,
+                          message: ''
+                      });
+                  }
+              }}
+              footer={updateDownloadProgress.status === 'error' ? [
+                  <Button
+                      key="close"
+                      onClick={() => setUpdateDownloadProgress({
+                          open: false,
+                          version: '',
+                          status: 'idle',
+                          percent: 0,
+                          downloaded: 0,
+                          total: 0,
+                          message: ''
+                      })}
+                  >
+                      关闭
+                  </Button>
+              ] : null}
+          >
+              <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
+                  <Progress
+                      percent={Math.round(updateDownloadProgress.percent)}
+                      status={updateDownloadProgress.status === 'error' ? 'exception' : (updateDownloadProgress.status === 'done' ? 'success' : 'active')}
+                  />
+                  <div style={{ fontSize: 12, color: '#8c8c8c' }}>
+                      {`${formatBytes(updateDownloadProgress.downloaded)} / ${formatBytes(updateDownloadProgress.total)}`}
+                  </div>
+                  {updateDownloadProgress.message ? (
+                      <div style={{ fontSize: 12, color: '#ff4d4f' }}>{updateDownloadProgress.message}</div>
+                  ) : null}
+              </div>
+          </Modal>
           
           {/* Ghost Resize Line for Sidebar */}
           <div 

frontend/src/components/ConnectionModal.tsx

@@ -14,6 +14,7 @@ const ConnectionModal: React.FC<{ open: boolean; onClose: () => void; initialVal
   const [useSSH, setUseSSH] = useState(false);
   const [dbType, setDbType] = useState('mysql');
   const [step, setStep] = useState(1); // 1: Select Type, 2: Configure
+  const [activeGroup, setActiveGroup] = useState(0); // Active category index in step 1
   const [testResult, setTestResult] = useState<{ type: 'success' | 'error', message: string } | null>(null);
   const [dbList, setDbList] = useState<string[]>([]);
   const [redisDbList, setRedisDbList] = useState<number[]>([]); // Redis databases 0-15
@@ -62,6 +63,7 @@ const ConnectionModal: React.FC<{ open: boolean; onClose: () => void; initialVal
               form.resetFields();
               setUseSSH(false);
               setDbType('mysql');
+              setActiveGroup(0);
           }
       }
   }, [open, initialValues]);
@@ -195,6 +197,11 @@ const ConnectionModal: React.FC<{ open: boolean; onClose: () => void; initialVal
           case 'oracle': defaultPort = 1521; break;
           case 'dameng': defaultPort = 5236; break;
           case 'kingbase': defaultPort = 54321; break;
+          case 'sqlserver': defaultPort = 1433; break;
+          case 'mongodb': defaultPort = 27017; break;
+          case 'highgo': defaultPort = 5866; break;
+          case 'mariadb': defaultPort = 3306; break;
+          case 'vastbase': defaultPort = 5432; break;
           default: defaultPort = 3306;
       }
       if (type !== 'sqlite' && type !== 'custom') {
@@ -208,32 +215,75 @@ const ConnectionModal: React.FC<{ open: boolean; onClose: () => void; initialVal
   const isCustom = dbType === 'custom';
   const isRedis = dbType === 'redis';
 
-  const dbTypes = [
-      { key: 'mysql', name: 'MySQL', icon: <ConsoleSqlOutlined style={{ fontSize: 24, color: '#00758F' }} /> },
-      { key: 'postgres', name: 'PostgreSQL', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#336791' }} /> },
-      { key: 'redis', name: 'Redis', icon: <CloudOutlined style={{ fontSize: 24, color: '#DC382D' }} /> },
-      { key: 'sqlite', name: 'SQLite', icon: <FileTextOutlined style={{ fontSize: 24, color: '#003B57' }} /> },
-      { key: 'oracle', name: 'Oracle', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#F80000' }} /> },
-      { key: 'dameng', name: 'Dameng (达梦)', icon: <CloudServerOutlined style={{ fontSize: 24, color: '#1890ff' }} /> },
-      { key: 'kingbase', name: 'Kingbase (人大金仓)', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#faad14' }} /> },
-      { key: 'custom', name: 'Custom (自定义)', icon: <AppstoreAddOutlined style={{ fontSize: 24, color: '#595959' }} /> },
+  const dbTypeGroups = [
+      { label: '关系型数据库', items: [
+          { key: 'mysql', name: 'MySQL', icon: <ConsoleSqlOutlined style={{ fontSize: 24, color: '#00758F' }} /> },
+          { key: 'mariadb', name: 'MariaDB', icon: <ConsoleSqlOutlined style={{ fontSize: 24, color: '#003545' }} /> },
+          { key: 'postgres', name: 'PostgreSQL', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#336791' }} /> },
+          { key: 'sqlserver', name: 'SQL Server', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#CC2927' }} /> },
+          { key: 'sqlite', name: 'SQLite', icon: <FileTextOutlined style={{ fontSize: 24, color: '#003B57' }} /> },
+          { key: 'oracle', name: 'Oracle', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#F80000' }} /> },
+      ]},
+      { label: '国产数据库', items: [
+          { key: 'dameng', name: 'Dameng (达梦)', icon: <CloudServerOutlined style={{ fontSize: 24, color: '#1890ff' }} /> },
+          { key: 'kingbase', name: 'Kingbase (人大金仓)', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#faad14' }} /> },
+          { key: 'highgo', name: 'HighGo (瀚高)', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#00a854' }} /> },
+          { key: 'vastbase', name: 'Vastbase (海量)', icon: <DatabaseOutlined style={{ fontSize: 24, color: '#1a6dff' }} /> },
+      ]},
+      { label: 'NoSQL', items: [
+          { key: 'mongodb', name: 'MongoDB', icon: <CloudServerOutlined style={{ fontSize: 24, color: '#47A248' }} /> },
+          { key: 'redis', name: 'Redis', icon: <CloudOutlined style={{ fontSize: 24, color: '#DC382D' }} /> },
+      ]},
+      { label: '其他', items: [
+          { key: 'custom', name: 'Custom (自定义)', icon: <AppstoreAddOutlined style={{ fontSize: 24, color: '#595959' }} /> },
+      ]},
   ];
 
+  const dbTypes = dbTypeGroups.flatMap(g => g.items);
+
   const renderStep1 = () => (
-      <Row gutter={[16, 16]}>
-          {dbTypes.map(item => (
-              <Col span={8} key={item.key}>
-                  <Card 
-                      hoverable 
-                      onClick={() => handleTypeSelect(item.key)}
-                      style={{ textAlign: 'center', cursor: 'pointer' }}
+      <div style={{ display: 'flex', height: 360 }}>
+          {/* 左侧分类导航 */}
+          <div style={{ width: 120, borderRight: '1px solid #f0f0f0', paddingRight: 8, flexShrink: 0 }}>
+              {dbTypeGroups.map((group, idx) => (
+                  <div
+                      key={group.label}
+                      onClick={() => setActiveGroup(idx)}
+                      style={{
+                          padding: '10px 12px',
+                          cursor: 'pointer',
+                          borderRadius: 6,
+                          marginBottom: 4,
+                          background: activeGroup === idx ? '#e6f4ff' : 'transparent',
+                          color: activeGroup === idx ? '#1677ff' : undefined,
+                          fontWeight: activeGroup === idx ? 500 : 400,
+                          transition: 'all 0.2s',
+                          fontSize: 13,
+                      }}
                   >
-                      <div style={{ marginBottom: 12 }}>{item.icon}</div>
-                      <Text strong>{item.name}</Text>
-                  </Card>
-              </Col>
-          ))}
-      </Row>
+                      {group.label}
+                  </div>
+              ))}
+          </div>
+          {/* 右侧数据源卡片 */}
+          <div style={{ flex: 1, paddingLeft: 16, overflowY: 'auto', overflowX: 'hidden' }}>
+              <Row gutter={[12, 12]}>
+                  {dbTypeGroups[activeGroup]?.items.map(item => (
+                      <Col span={8} key={item.key}>
+                          <Card
+                              hoverable
+                              onClick={() => handleTypeSelect(item.key)}
+                              style={{ textAlign: 'center', cursor: 'pointer', height: 100 }}
+                              styles={{ body: { padding: '16px 8px', display: 'flex', flexDirection: 'column', alignItems: 'center', justifyContent: 'center', height: '100%' } }}
+                          >
+                              <div style={{ marginBottom: 8 }}>{item.icon}</div>
+                              <Text strong style={{ fontSize: 12, whiteSpace: 'nowrap', overflow: 'hidden', textOverflow: 'ellipsis', maxWidth: '100%' }}>{item.name}</Text>
+                          </Card>
+                      </Col>
+                  ))}
+              </Row>
+          </div>
+      </div>
   );
 
   const renderStep2 = () => (
@@ -401,15 +451,16 @@ const ConnectionModal: React.FC<{ open: boolean; onClose: () => void; initialVal
   };
 
   return (
-    <Modal 
+    <Modal
         title={getTitle()}
-        open={open} 
-        onCancel={onClose} 
+        open={open}
+        onCancel={onClose}
         footer={getFooter()}
-        width={step === 1 ? 700 : 600}
-        zIndex={10001} 
-        destroyOnHidden 
+        width={step === 1 ? 650 : 600}
+        zIndex={10001}
+        destroyOnHidden
         maskClosable={false}
+        styles={step === 1 ? { body: { padding: '16px 24px', overflow: 'hidden' } } : undefined}
     >
       {step === 1 ? renderStep1() : renderStep2()}
     </Modal>

frontend/src/components/RedisViewer.tsx

@@ -1,13 +1,16 @@
-import React, { useState, useEffect, useCallback, useRef } from 'react';
-import { Table, Input, Button, Space, Tag, message, Modal, Form, InputNumber, Popconfirm, Tooltip, Radio } from 'antd';
-import { ReloadOutlined, DeleteOutlined, PlusOutlined, EditOutlined, SearchOutlined, ClockCircleOutlined, CopyOutlined } from '@ant-design/icons';
+import React, { useState, useEffect, useCallback, useMemo, useRef } from 'react';
+import { Table, Input, Button, Space, Tag, Tree, Spin, message, Modal, Form, InputNumber, Popconfirm, Tooltip, Radio } from 'antd';
+import { ReloadOutlined, DeleteOutlined, PlusOutlined, EditOutlined, SearchOutlined, ClockCircleOutlined, CopyOutlined, FolderOpenOutlined, KeyOutlined } from '@ant-design/icons';
 import { useStore } from '../store';
 import { RedisKeyInfo, RedisValue } from '../types';
 import Editor from '@monaco-editor/react';
-import type { ColumnType } from 'antd/es/table';
+import type { DataNode } from 'antd/es/tree';
 
 const { Search } = Input;
 
+const KEY_GROUP_DELIMITER = ':';
+const EMPTY_SEGMENT_LABEL = '(empty)';
+
 interface RedisViewerProps {
     connectionId: string;
     redisDB: number;
@@ -222,86 +225,167 @@ const ResizableDivider: React.FC<{
 };
 
 // 可拖拽列头组件 - 纯 DOM 操作实现
-const ResizableTitle: React.FC<any> = (props) => {
-    const { onResize, width, children, ...restProps } = props;
-    const thRef = useRef<HTMLTableCellElement>(null);
+type RedisKeyTreeLeaf = {
+    keyInfo: RedisKeyInfo;
+    label: string;
+};
 
-    // 如果没有 onResize 或 width，说明这列不需要拖拽（如复选框列）
-    if (!onResize || !width) {
-        return <th {...restProps}>{children}</th>;
-    }
+type RedisKeyTreeGroup = {
+    name: string;
+    path: string;
+    children: Map<string, RedisKeyTreeGroup>;
+    leaves: RedisKeyTreeLeaf[];
+};
 
-    const handleMouseDown = (e: React.MouseEvent) => {
-        e.stopPropagation();
-        e.preventDefault();
+type RedisKeyTreeResult = {
+    treeData: DataNode[];
+    rawKeyByNodeKey: Map<string, string>;
+    leafNodeKeyByRawKey: Map<string, string>;
+    groupKeys: string[];
+};
 
-        const startX = e.clientX;
-        const startWidth = width;
-        const th = thRef.current;
-        if (!th) return;
+const normalizeKeySegment = (segment: string): string => {
+    return segment === '' ? EMPTY_SEGMENT_LABEL : segment;
+};
 
-        // 找到对应的 colgroup col 元素来同步更新列宽
-        const table = th.closest('table');
-        const thIndex = Array.from(th.parentElement?.children || []).indexOf(th);
-        const col = table?.querySelector(`colgroup col:nth-child(${thIndex + 1})`) as HTMLElement | null;
+const createTreeGroup = (name: string, path: string): RedisKeyTreeGroup => {
+    return { name, path, children: new Map(), leaves: [] };
+};
 
-        // 创建遮罩层防止文本选择
-        const overlay = document.createElement('div');
-        overlay.style.cssText = 'position:fixed;top:0;left:0;right:0;bottom:0;cursor:col-resize;z-index:9999;';
-        document.body.appendChild(overlay);
+const countGroupLeafNodes = (group: RedisKeyTreeGroup): number => {
+    let count = group.leaves.length;
+    group.children.forEach((child) => {
+        count += countGroupLeafNodes(child);
+    });
+    return count;
+};
 
-        let currentWidth = startWidth;
+const buildRedisKeyTree = (
+    keys: RedisKeyInfo[],
+    formatTTL: (ttl: number) => string,
+    getTypeColor: (type: string) => string
+): RedisKeyTreeResult => {
+    const root = createTreeGroup('__root__', '__root__');
 
-        const handleMouseMove = (moveEvent: MouseEvent) => {
-            moveEvent.preventDefault();
-            const delta = moveEvent.clientX - startX;
-            currentWidth = Math.max(50, startWidth + delta);
-            // 直接操作 DOM
-            th.style.width = `${currentWidth}px`;
-            if (col) {
-                col.style.width = `${currentWidth}px`;
+    keys.forEach((keyInfo) => {
+        const segments = keyInfo.key.split(KEY_GROUP_DELIMITER);
+        if (segments.length <= 1) {
+            root.leaves.push({ keyInfo, label: keyInfo.key });
+            return;
+        }
+
+        const groupSegments = segments.slice(0, -1);
+        const leafLabel = normalizeKeySegment(segments[segments.length - 1]);
+        let current = root;
+        const pathParts: string[] = [];
+
+        groupSegments.forEach((segment) => {
+            const normalized = normalizeKeySegment(segment);
+            pathParts.push(normalized);
+            const groupPath = pathParts.join(KEY_GROUP_DELIMITER);
+            let child = current.children.get(normalized);
+            if (!child) {
+                child = createTreeGroup(normalized, groupPath);
+                current.children.set(normalized, child);
             }
-        };
+            current = child;
+        });
 
-        const handleMouseUp = () => {
-            document.removeEventListener('mousemove', handleMouseMove);
-            document.removeEventListener('mouseup', handleMouseUp);
-            document.body.removeChild(overlay);
-            // 拖拽结束时更新 React state
-            onResize(null, { size: { width: currentWidth } });
-        };
+        current.leaves.push({ keyInfo, label: leafLabel });
+    });
 
-        document.addEventListener('mousemove', handleMouseMove);
-        document.addEventListener('mouseup', handleMouseUp);
+    const rawKeyByNodeKey = new Map<string, string>();
+    const leafNodeKeyByRawKey = new Map<string, string>();
+    const groupKeys: string[] = [];
+
+    const toTreeNodes = (group: RedisKeyTreeGroup): DataNode[] => {
+        const childGroups = Array.from(group.children.values()).sort((a, b) => a.name.localeCompare(b.name));
+        const childLeaves = [...group.leaves].sort((a, b) => a.keyInfo.key.localeCompare(b.keyInfo.key));
+
+        const groupNodes: DataNode[] = childGroups.map((child) => {
+            const groupNodeKey = `group:${child.path}`;
+            groupKeys.push(groupNodeKey);
+            return {
+                key: groupNodeKey,
+                title: (
+                    <Space size={6}>
+                        <FolderOpenOutlined style={{ color: '#8c8c8c' }} />
+                        <span>{child.name}</span>
+                        <span style={{ fontSize: 12, color: '#999' }}>({countGroupLeafNodes(child)})</span>
+                    </Space>
+                ),
+                selectable: false,
+                disableCheckbox: true,
+                children: toTreeNodes(child),
+            };
+        });
+
+        const leafNodes: DataNode[] = childLeaves.map((leaf) => {
+            const nodeKey = `key:${leaf.keyInfo.key}`;
+            rawKeyByNodeKey.set(nodeKey, leaf.keyInfo.key);
+            leafNodeKeyByRawKey.set(leaf.keyInfo.key, nodeKey);
+            return {
+                key: nodeKey,
+                isLeaf: true,
+                title: (
+                    <div
+                        style={{
+                            display: 'grid',
+                            gridTemplateColumns: 'minmax(0, 1fr) 92px 92px',
+                            columnGap: 8,
+                            alignItems: 'center',
+                            minWidth: 0,
+                            width: '100%',
+                        }}
+                    >
+                        <Space size={6} style={{ minWidth: 0 }}>
+                            <KeyOutlined style={{ color: '#1677ff' }} />
+                            <Tooltip title={leaf.keyInfo.key}>
+                                <span
+                                    style={{
+                                        maxWidth: '100%',
+                                        overflow: 'hidden',
+                                        textOverflow: 'ellipsis',
+                                        whiteSpace: 'nowrap',
+                                        display: 'inline-block',
+                                        verticalAlign: 'bottom',
+                                    }}
+                                >
+                                    {leaf.label}
+                                </span>
+                            </Tooltip>
+                        </Space>
+                        <Tag
+                            color={getTypeColor(leaf.keyInfo.type)}
+                            style={{ marginInlineEnd: 0, width: '100%', textAlign: 'center' }}
+                        >
+                            {leaf.keyInfo.type}
+                        </Tag>
+                        <span
+                            style={{
+                                width: '100%',
+                                fontSize: 12,
+                                color: '#999',
+                                textAlign: 'left',
+                                whiteSpace: 'nowrap',
+                            }}
+                        >
+                            {formatTTL(leaf.keyInfo.ttl)}
+                        </span>
+                    </div>
+                ),
+            };
+        });
+
+        return [...groupNodes, ...leafNodes];
     };
 
-    return (
-        <th
-            ref={thRef}
-            {...restProps}
-            style={{
-                ...restProps.style,
-                position: 'relative'
-            }}
-        >
-            {children}
-            <div
-                style={{
-                    position: 'absolute',
-                    right: 0,
-                    top: 0,
-                    bottom: 0,
-                    width: 10,
-                    cursor: 'col-resize',
-                    zIndex: 1,
-                    background: 'transparent'
-                }}
-                onMouseDown={handleMouseDown}
-                onMouseOver={(e) => { e.currentTarget.style.background = 'rgba(0,0,0,0.06)'; }}
-                onMouseOut={(e) => { e.currentTarget.style.background = 'transparent'; }}
-            />
-        </th>
-    );
+    return {
+        treeData: toTreeNodes(root),
+        rawKeyByNodeKey,
+        leafNodeKeyByRawKey,
+        groupKeys,
+    };
 };
 
 const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
@@ -317,7 +401,6 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
     const [keyValue, setKeyValue] = useState<RedisValue | null>(null);
     const [valueLoading, setValueLoading] = useState(false);
     const [editModalOpen, setEditModalOpen] = useState(false);
-    const [editForm] = Form.useForm();
     const [newKeyModalOpen, setNewKeyModalOpen] = useState(false);
     const [newKeyForm] = Form.useForm();
     const [ttlModalOpen, setTtlModalOpen] = useState(false);
@@ -341,15 +424,7 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
     // 面板宽度状态和 ref - 默认占据 50% 宽度
     const [leftPanelWidth, setLeftPanelWidth] = useState<number | string>('50%');
     const leftPanelRef = useRef<HTMLDivElement>(null);
-
-    // 列宽状态 - 复选框列约 32px，总宽度需要接近面板宽度
-    // Key 列自适应剩余空间，其他列固定宽度
-    const [columnWidths, setColumnWidths] = useState({
-        key: 220,    // Key 名称，需要较宽
-        type: 65,    // 类型标签
-        ttl: 80,     // TTL 显示
-        action: 50   // 操作按钮
-    });
+    const [expandedGroupKeys, setExpandedGroupKeys] = useState<string[]>([]);
 
     const getConfig = useCallback(() => {
         if (!connection) return null;
@@ -373,7 +448,12 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
             if (res.success) {
                 const result = res.data;
                 if (append) {
-                    setKeys(prev => [...prev, ...result.keys]);
+                    setKeys(prev => {
+                        const keyMap = new Map<string, RedisKeyInfo>();
+                        prev.forEach(item => keyMap.set(item.key, item));
+                        result.keys.forEach((item: RedisKeyInfo) => keyMap.set(item.key, item));
+                        return Array.from(keyMap.values());
+                    });
                 } else {
                     setKeys(result.keys);
                 }
@@ -451,6 +531,11 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
         }
     };
 
+    const handleDeleteCurrentKey = async () => {
+        if (!selectedKey) return;
+        await handleDeleteKeys([selectedKey]);
+    };
+
     const handleSetTTL = async () => {
         const config = getConfig();
         if (!config || !selectedKey) return;
@@ -529,65 +614,54 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
         return `${Math.floor(ttl / 86400)}天${Math.floor((ttl % 86400) / 3600)}时`;
     };
 
-    // 处理列宽调整 - react-resizable 的 onResize 回调格式
-    const handleColumnResize = (key: string) => (_e: any, { size }: { size: { width: number } }) => {
-        setColumnWidths(prev => ({ ...prev, [key]: size.width }));
+    const keyTree = useMemo(() => {
+        return buildRedisKeyTree(keys, formatTTL, getTypeColor);
+    }, [keys]);
+
+    const selectedTreeNodeKeys = useMemo(() => {
+        if (!selectedKey) {
+            return [] as string[];
+        }
+        const nodeKey = keyTree.leafNodeKeyByRawKey.get(selectedKey);
+        return nodeKey ? [nodeKey] : [];
+    }, [selectedKey, keyTree]);
+
+    const checkedTreeNodeKeys = useMemo(() => {
+        return selectedKeys
+            .map(rawKey => keyTree.leafNodeKeyByRawKey.get(rawKey))
+            .filter((nodeKey): nodeKey is string => Boolean(nodeKey));
+    }, [selectedKeys, keyTree]);
+
+    useEffect(() => {
+        const existingKeySet = new Set(keys.map(item => item.key));
+        setSelectedKeys(prev => prev.filter(rawKey => existingKeySet.has(rawKey)));
+    }, [keys]);
+
+    useEffect(() => {
+        setExpandedGroupKeys((prev) => {
+            const validKeys = prev.filter(nodeKey => keyTree.groupKeys.includes(nodeKey));
+            return validKeys;
+        });
+    }, [keyTree]);
+
+    const handleTreeSelect = (nodeKeys: React.Key[]) => {
+        if (nodeKeys.length === 0) {
+            return;
+        }
+        const rawKey = keyTree.rawKeyByNodeKey.get(String(nodeKeys[0]));
+        if (!rawKey) {
+            return;
+        }
+        loadKeyValue(rawKey);
     };
 
-    const columns: ColumnType<RedisKeyInfo>[] = [
-        {
-            title: 'Key',
-            dataIndex: 'key',
-            key: 'key',
-            width: columnWidths.key,
-            ellipsis: true,
-            onHeaderCell: (column: any) => ({
-                width: column.width,
-                onResize: handleColumnResize('key')
-            }),
-            render: (text: string) => (
-                <Tooltip title={text}>
-                    <span style={{ cursor: 'pointer' }} onClick={() => loadKeyValue(text)}>{text}</span>
-                </Tooltip>
-            )
-        },
-        {
-            title: '类型',
-            dataIndex: 'type',
-            key: 'type',
-            width: columnWidths.type,
-            onHeaderCell: (column: any) => ({
-                width: column.width,
-                onResize: handleColumnResize('type')
-            }),
-            render: (type: string) => <Tag color={getTypeColor(type)}>{type}</Tag>
-        },
-        {
-            title: 'TTL',
-            dataIndex: 'ttl',
-            key: 'ttl',
-            width: columnWidths.ttl,
-            onHeaderCell: (column: any) => ({
-                width: column.width,
-                onResize: handleColumnResize('ttl')
-            }),
-            render: (ttl: number) => formatTTL(ttl)
-        },
-        {
-            title: '操作',
-            key: 'action',
-            width: columnWidths.action,
-            onHeaderCell: (column: any) => ({
-                width: column.width,
-                onResize: handleColumnResize('action')
-            }),
-            render: (_: any, record: RedisKeyInfo) => (
-                <Popconfirm title="确定删除此 Key？" onConfirm={() => handleDeleteKeys([record.key])}>
-                    <Button type="text" danger size="small" icon={<DeleteOutlined />} />
-                </Popconfirm>
-            )
-        }
-    ];
+    const handleTreeCheck = (checked: React.Key[] | { checked: React.Key[]; halfChecked: React.Key[] }) => {
+        const checkedNodeKeys = Array.isArray(checked) ? checked : checked.checked;
+        const rawKeys = checkedNodeKeys
+            .map(nodeKey => keyTree.rawKeyByNodeKey.get(String(nodeKey)))
+            .filter((rawKey): rawKey is string => Boolean(rawKey));
+        setSelectedKeys(rawKeys);
+    };
 
     const renderValueEditor = () => {
         if (!keyValue || !selectedKey) {
@@ -1375,6 +1449,9 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
                             setTtlModalOpen(true);
                         }}>设置 TTL</Button>
                         <Button size="small" onClick={() => loadKeyValue(selectedKey)} icon={<ReloadOutlined />}>刷新</Button>
+                        <Popconfirm title={`确定删除 Key "${selectedKey}"？`} onConfirm={handleDeleteCurrentKey}>
+                            <Button size="small" danger icon={<DeleteOutlined />}>删除 Key</Button>
+                        </Popconfirm>
                     </Space>
                 </div>
                 <div style={{ flex: 1, minHeight: 0, overflow: 'hidden' }}>
@@ -1410,36 +1487,35 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
                             <Button size="small" icon={<ReloadOutlined />} onClick={handleRefresh}>刷新</Button>
                             <Button size="small" icon={<PlusOutlined />} onClick={() => setNewKeyModalOpen(true)}>新建</Button>
                         </Space>
-                        {selectedKeys.length > 0 && (
-                            <Popconfirm title={`确定删除选中的 ${selectedKeys.length} 个 Key？`} onConfirm={() => handleDeleteKeys(selectedKeys)}>
-                                <Button size="small" danger icon={<DeleteOutlined />}>删除选中</Button>
-                            </Popconfirm>
-                        )}
+                        <Popconfirm
+                            title={`确定删除选中的 ${selectedKeys.length} 个 Key？`}
+                            onConfirm={() => handleDeleteKeys(selectedKeys)}
+                            disabled={selectedKeys.length === 0}
+                        >
+                            <Button size="small" danger icon={<DeleteOutlined />} disabled={selectedKeys.length === 0}>
+                                删除选中({selectedKeys.length})
+                            </Button>
+                        </Popconfirm>
                     </div>
                 </div>
                 <div style={{ flex: 1, overflow: 'auto' }}>
-                    <Table
-                        dataSource={keys}
-                        columns={columns}
-                        rowKey="key"
-                        size="small"
-                        loading={loading}
-                        pagination={false}
-                        components={{
-                            header: {
-                                cell: ResizableTitle
-                            }
-                        }}
-                        rowSelection={{
-                            selectedRowKeys: selectedKeys,
-                            onChange: (keys) => setSelectedKeys(keys as string[])
-                        }}
-                        onRow={(record) => ({
-                            onClick: () => loadKeyValue(record.key),
-                            style: { cursor: 'pointer', background: selectedKey === record.key ? '#e6f7ff' : undefined }
-                        })}
-                        style={{ width: '100%' }}
-                    />
+                    <Spin spinning={loading} size="small">
+                        <Tree
+                            blockNode
+                            showIcon={false}
+                            checkable
+                            checkStrictly
+                            selectable
+                            treeData={keyTree.treeData}
+                            selectedKeys={selectedTreeNodeKeys}
+                            checkedKeys={checkedTreeNodeKeys}
+                            expandedKeys={expandedGroupKeys}
+                            onExpand={(nextExpandedKeys) => setExpandedGroupKeys(nextExpandedKeys as string[])}
+                            onSelect={(nodeKeys) => handleTreeSelect(nodeKeys)}
+                            onCheck={(checked) => handleTreeCheck(checked)}
+                            style={{ padding: '8px 6px' }}
+                        />
+                    </Spin>
                     {hasMore && (
                         <div style={{ padding: 8, textAlign: 'center' }}>
                             <Button onClick={handleLoadMore} loading={loading}>加载更多</Button>

frontend/src/components/Sidebar.tsx

@@ -28,7 +28,7 @@ import { Tree, message, Dropdown, MenuProps, Input, Button, Modal, Form, Badge,
 	} from '@ant-design/icons';
 	import { useStore } from '../store';
 	import { SavedConnection } from '../types';
-	import { DBGetDatabases, DBGetTables, DBShowCreateTable, ExportTable, OpenSQLFile, CreateDatabase } from '../../wailsjs/go/app/App';
+	import { DBGetDatabases, DBGetTables, DBShowCreateTable, ExportTable, OpenSQLFile, CreateDatabase, RenameDatabase, DropDatabase, RenameTable, DropTable } from '../../wailsjs/go/app/App';
   import { normalizeOpacityForPlatform } from '../utils/appearance';
 
 const { Search } = Input;
@@ -43,6 +43,8 @@ interface TreeNode {
   type?: 'connection' | 'database' | 'table' | 'queries-folder' | 'saved-query' | 'folder-columns' | 'folder-indexes' | 'folder-fks' | 'folder-triggers' | 'redis-db';
 }
 
+type BatchTableExportMode = 'schema' | 'backup' | 'dataOnly';
+
 const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }> = ({ onEditConnection }) => {
   const connections = useStore(state => state.connections);
   const savedQueries = useStore(state => state.savedQueries);
@@ -96,6 +98,12 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
   const [isCreateDbModalOpen, setIsCreateDbModalOpen] = useState(false);
   const [createDbForm] = Form.useForm();
   const [targetConnection, setTargetConnection] = useState<any>(null);
+  const [isRenameDbModalOpen, setIsRenameDbModalOpen] = useState(false);
+  const [renameDbForm] = Form.useForm();
+  const [renameDbTarget, setRenameDbTarget] = useState<any>(null);
+  const [isRenameTableModalOpen, setIsRenameTableModalOpen] = useState(false);
+  const [renameTableForm] = Form.useForm();
+  const [renameTableTarget, setRenameTableTarget] = useState<any>(null);
 
   // Batch Operations Modal
   const [isBatchModalOpen, setIsBatchModalOpen] = useState(false);
@@ -661,7 +669,7 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
       }
   };
 
-  const handleBatchExport = async (includeData: boolean) => {
+  const handleBatchExport = async (mode: BatchTableExportMode) => {
       const selectedTables = batchTables.filter(t => checkedTableKeys.includes(t.key));
       if (selectedTables.length === 0) {
           message.warning('请至少选择一张表');
@@ -673,9 +681,17 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
       const { conn, dbName } = batchDbContext;
       const tableNames = selectedTables.map(t => t.tableName);
 
-      const hide = message.loading(includeData ? `正在备份选中表 (${tableNames.length})...` : `正在导出选中表结构 (${tableNames.length})...`, 0);
+      const loadingText = mode === 'backup'
+          ? `正在备份选中表 (${tableNames.length})...`
+          : mode === 'dataOnly'
+              ? `正在导出选中表数据 (INSERT) (${tableNames.length})...`
+              : `正在导出选中表结构 (${tableNames.length})...`;
+      const hide = message.loading(loadingText, 0);
       try {
-          const res = await (window as any).go.app.App.ExportTablesSQL(normalizeConnConfig(conn.config), dbName, tableNames, includeData);
+          const app = (window as any).go.app.App;
+          const res = mode === 'dataOnly'
+              ? await app.ExportTablesDataSQL(normalizeConnConfig(conn.config), dbName, tableNames)
+              : await app.ExportTablesSQL(normalizeConnConfig(conn.config), dbName, tableNames, mode === 'backup');
           hide();
           if (res.success) {
               message.success('导出成功');
@@ -865,6 +881,148 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
       }
   };
 
+  const buildRuntimeConfig = (conn: any, overrideDatabase?: string, clearDatabase: boolean = false) => {
+      return {
+          ...conn.config,
+          port: Number(conn.config.port),
+          password: conn.config.password || "",
+          database: clearDatabase ? "" : ((overrideDatabase ?? conn.config.database) || ""),
+          useSSH: conn.config.useSSH || false,
+          ssh: conn.config.ssh || { host: "", port: 22, user: "", password: "", keyPath: "" }
+      };
+  };
+
+  const getConnectionNodeRef = (connRef: any) => {
+      const latestConn = connections.find(c => c.id === connRef.id);
+      return { key: connRef.id, dataRef: latestConn || connRef };
+  };
+
+  const getDatabaseNodeRef = (connRef: any, dbName: string) => {
+      const latestConn = connections.find(c => c.id === connRef.id);
+      return {
+          key: `${connRef.id}-${dbName}`,
+          dataRef: { ...(latestConn || connRef), dbName }
+      };
+  };
+
+  const extractObjectName = (fullName: string) => {
+      const raw = String(fullName || '').trim();
+      const idx = raw.lastIndexOf('.');
+      if (idx >= 0 && idx < raw.length - 1) {
+          return raw.substring(idx + 1);
+      }
+      return raw;
+  };
+
+  const handleRenameDatabase = async () => {
+      if (!renameDbTarget) return;
+      try {
+          const values = await renameDbForm.validateFields();
+          const conn = renameDbTarget.dataRef;
+          const oldDbName = String(conn.dbName || '').trim();
+          const newDbName = String(values.newName || '').trim();
+          if (!oldDbName || !newDbName) {
+              message.error("数据库名称不能为空");
+              return;
+          }
+          if (oldDbName === newDbName) {
+              message.warning("新旧数据库名称相同，无需修改");
+              return;
+          }
+
+          const config = buildRuntimeConfig(conn, conn.dbName);
+          const res = await RenameDatabase(config as any, oldDbName, newDbName);
+          if (res.success) {
+              message.success("数据库重命名成功");
+              setExpandedKeys(prev => prev.filter(k => !k.toString().startsWith(`${conn.id}-${oldDbName}`)));
+              setLoadedKeys(prev => prev.filter(k => !k.toString().startsWith(`${conn.id}-${oldDbName}`)));
+              await loadDatabases(getConnectionNodeRef(conn));
+              setIsRenameDbModalOpen(false);
+              setRenameDbTarget(null);
+              renameDbForm.resetFields();
+          } else {
+              message.error("重命名失败: " + res.message);
+          }
+      } catch (e) {
+          // Validate failed
+      }
+  };
+
+  const handleDeleteDatabase = (node: any) => {
+      const conn = node.dataRef;
+      const dbName = String(conn.dbName || '').trim();
+      if (!dbName) return;
+      Modal.confirm({
+          title: '确认删除数据库',
+          content: `确定删除数据库 "${dbName}" 吗？该操作不可恢复。`,
+          okButtonProps: { danger: true },
+          onOk: async () => {
+              const config = buildRuntimeConfig(conn, conn.dbName);
+              const res = await DropDatabase(config as any, dbName);
+              if (res.success) {
+                  message.success("数据库删除成功");
+                  setExpandedKeys(prev => prev.filter(k => !k.toString().startsWith(`${conn.id}-${dbName}`)));
+                  setLoadedKeys(prev => prev.filter(k => !k.toString().startsWith(`${conn.id}-${dbName}`)));
+                  await loadDatabases(getConnectionNodeRef(conn));
+              } else {
+                  message.error("删除失败: " + res.message);
+              }
+          }
+      });
+  };
+
+  const handleRenameTable = async () => {
+      if (!renameTableTarget) return;
+      try {
+          const values = await renameTableForm.validateFields();
+          const conn = renameTableTarget.dataRef;
+          const oldTableName = String(conn.tableName || '').trim();
+          const newTableName = String(values.newName || '').trim();
+          if (!oldTableName || !newTableName) {
+              message.error("表名不能为空");
+              return;
+          }
+          if (extractObjectName(oldTableName) === newTableName || oldTableName === newTableName) {
+              message.warning("新旧表名相同，无需修改");
+              return;
+          }
+          const config = buildRuntimeConfig(conn, conn.dbName);
+          const res = await RenameTable(config as any, conn.dbName, oldTableName, newTableName);
+          if (res.success) {
+              message.success("表重命名成功");
+              await loadTables(getDatabaseNodeRef(conn, conn.dbName));
+              setIsRenameTableModalOpen(false);
+              setRenameTableTarget(null);
+              renameTableForm.resetFields();
+          } else {
+              message.error("重命名失败: " + res.message);
+          }
+      } catch (e) {
+          // Validate failed
+      }
+  };
+
+  const handleDeleteTable = (node: any) => {
+      const conn = node.dataRef;
+      const tableName = String(conn.tableName || '').trim();
+      if (!tableName) return;
+      Modal.confirm({
+          title: '确认删除表',
+          content: `确定删除表 "${tableName}" 吗？该操作不可恢复。`,
+          okButtonProps: { danger: true },
+          onOk: async () => {
+              const config = buildRuntimeConfig(conn, conn.dbName);
+              const res = await DropTable(config as any, conn.dbName, tableName);
+              if (res.success) {
+                  message.success("表删除成功");
+                  await loadTables(getDatabaseNodeRef(conn, conn.dbName));
+              } else {
+                  message.error("删除失败: " + res.message);
+              }
+          }
+      });
+  };
+
   const onSearch = (e: React.ChangeEvent<HTMLInputElement>) => {
     const { value } = e.target;
     setSearchValue(value);
@@ -1088,6 +1246,23 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
                icon: <TableOutlined />,
                onClick: () => openNewTableDesign(node)
            },
+           {
+               key: 'rename-db',
+               label: '重命名数据库',
+               icon: <EditOutlined />,
+               onClick: () => {
+                   setRenameDbTarget(node);
+                   renameDbForm.setFieldsValue({ newName: node.dataRef?.dbName || '' });
+                   setIsRenameDbModalOpen(true);
+               }
+           },
+           {
+               key: 'drop-db',
+               label: '删除数据库',
+               icon: <DeleteOutlined />,
+               danger: true,
+               onClick: () => handleDeleteDatabase(node)
+           },
            {
                key: 'refresh',
                label: '刷新',
@@ -1180,6 +1355,23 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
                 icon: <SaveOutlined />,
                 onClick: () => handleExport(node, 'sql')
             },
+            {
+                key: 'rename-table',
+                label: '重命名表',
+                icon: <EditOutlined />,
+                onClick: () => {
+                    setRenameTableTarget(node);
+                    renameTableForm.setFieldsValue({ newName: extractObjectName(node.dataRef?.tableName || node.title) });
+                    setIsRenameTableModalOpen(true);
+                }
+            },
+            {
+                key: 'drop-table',
+                label: '删除表',
+                icon: <DeleteOutlined />,
+                danger: true,
+                onClick: () => handleDeleteTable(node)
+            },
             {
                 type: 'divider'
             },
@@ -1295,33 +1487,79 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
             </Form>
         </Modal>
 
+        <Modal
+            title={`重命名数据库${renameDbTarget?.dataRef?.dbName ? ` (${renameDbTarget.dataRef.dbName})` : ''}`}
+            open={isRenameDbModalOpen}
+            onOk={handleRenameDatabase}
+            onCancel={() => {
+                setIsRenameDbModalOpen(false);
+                setRenameDbTarget(null);
+                renameDbForm.resetFields();
+            }}
+        >
+            <Form form={renameDbForm} layout="vertical">
+                <Form.Item name="newName" label="新数据库名称" rules={[{ required: true, message: '请输入新数据库名称' }]}>
+                    <Input />
+                </Form.Item>
+            </Form>
+        </Modal>
+
+        <Modal
+            title={`重命名表${renameTableTarget?.dataRef?.tableName ? ` (${renameTableTarget.dataRef.tableName})` : ''}`}
+            open={isRenameTableModalOpen}
+            onOk={handleRenameTable}
+            onCancel={() => {
+                setIsRenameTableModalOpen(false);
+                setRenameTableTarget(null);
+                renameTableForm.resetFields();
+            }}
+        >
+            <Form form={renameTableForm} layout="vertical">
+                <Form.Item name="newName" label="新表名" rules={[{ required: true, message: '请输入新表名' }]}>
+                    <Input />
+                </Form.Item>
+            </Form>
+        </Modal>
+
         <Modal
             title="批量操作表"
             open={isBatchModalOpen}
             onCancel={() => setIsBatchModalOpen(false)}
-            width={600}
-            footer={[
-                <Button key="cancel" onClick={() => setIsBatchModalOpen(false)}>
-                    取消
-                </Button>,
-                <Button
-                    key="export-schema"
-                    icon={<ExportOutlined />}
-                    onClick={() => handleBatchExport(false)}
-                    disabled={checkedTableKeys.length === 0}
-                >
-                    导出表结构 ({checkedTableKeys.length})
-                </Button>,
-                <Button
-                    key="backup"
-                    type="primary"
-                    icon={<SaveOutlined />}
-                    onClick={() => handleBatchExport(true)}
-                    disabled={checkedTableKeys.length === 0}
-                >
-                    备份表 ({checkedTableKeys.length})
-                </Button>
-            ]}
+            width={680}
+            footer={
+                <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', gap: 8, flexWrap: 'wrap' }}>
+                    <Button key="cancel" onClick={() => setIsBatchModalOpen(false)}>
+                        取消
+                    </Button>
+                    <Space size={8} wrap style={{ marginLeft: 'auto' }}>
+                        <Button
+                            key="export-schema"
+                            icon={<ExportOutlined />}
+                            onClick={() => handleBatchExport('schema')}
+                            disabled={checkedTableKeys.length === 0}
+                        >
+                            导出结构
+                        </Button>
+                        <Button
+                            key="export-data-only"
+                            icon={<SaveOutlined />}
+                            onClick={() => handleBatchExport('dataOnly')}
+                            disabled={checkedTableKeys.length === 0}
+                        >
+                            仅数据(INSERT)
+                        </Button>
+                        <Button
+                            key="backup"
+                            type="primary"
+                            icon={<SaveOutlined />}
+                            onClick={() => handleBatchExport('backup')}
+                            disabled={checkedTableKeys.length === 0}
+                        >
+                            备份(结构+数据)
+                        </Button>
+                    </Space>
+                </div>
+            }
         >
             <div style={{ marginBottom: 16 }}>
                 <div style={{ marginBottom: 8 }}>

frontend/src/store.ts

@@ -2,6 +2,19 @@ import { create } from 'zustand';
 import { persist } from 'zustand/middleware';
 import { SavedConnection, TabData, SavedQuery } from './types';
 
+const DEFAULT_APPEARANCE = { opacity: 1.0, blur: 0 };
+const LEGACY_DEFAULT_OPACITY = 0.95;
+const OPACITY_EPSILON = 1e-6;
+
+const isLegacyDefaultAppearance = (appearance: Partial<{ opacity: number; blur: number }> | undefined): boolean => {
+  if (!appearance) {
+    return true;
+  }
+  const opacity = typeof appearance.opacity === 'number' ? appearance.opacity : LEGACY_DEFAULT_OPACITY;
+  const blur = typeof appearance.blur === 'number' ? appearance.blur : 0;
+  return Math.abs(opacity - LEGACY_DEFAULT_OPACITY) < OPACITY_EPSILON && blur === 0;
+};
+
 export interface SqlLog {
   id: string;
   timestamp: number;
@@ -59,7 +72,7 @@ export const useStore = create<AppState>()(
       activeContext: null,
       savedQueries: [],
       theme: 'light',
-      appearance: { opacity: 0.95, blur: 0 },
+      appearance: { ...DEFAULT_APPEARANCE },
       sqlFormatOptions: { keywordCase: 'upper' },
       queryOptions: { maxRows: 5000 },
       sqlLogs: [],
@@ -138,6 +151,33 @@ export const useStore = create<AppState>()(
     }),
     {
       name: 'lite-db-storage', // name of the item in the storage (must be unique)
+      version: 2,
+      migrate: (persistedState: unknown, version: number) => {
+        if (!persistedState || typeof persistedState !== 'object') {
+          return persistedState as AppState;
+        }
+        const state = persistedState as Partial<AppState>;
+        const nextState: Partial<AppState> = { ...state };
+        const appearance = state.appearance;
+
+        if (!appearance || typeof appearance !== 'object') {
+          nextState.appearance = { ...DEFAULT_APPEARANCE };
+          return nextState as AppState;
+        }
+
+        const nextAppearance = {
+          opacity: typeof appearance.opacity === 'number' ? appearance.opacity : DEFAULT_APPEARANCE.opacity,
+          blur: typeof appearance.blur === 'number' ? appearance.blur : DEFAULT_APPEARANCE.blur,
+        };
+
+        if (version < 2 && isLegacyDefaultAppearance(appearance)) {
+          nextState.appearance = { ...DEFAULT_APPEARANCE };
+        } else {
+          nextState.appearance = nextAppearance;
+        }
+
+        return nextState as AppState;
+      },
       partialize: (state) => ({ connections: state.connections, savedQueries: state.savedQueries, theme: state.theme, appearance: state.appearance, sqlFormatOptions: state.sqlFormatOptions, queryOptions: state.queryOptions }), // Don't persist logs
     }
   )

frontend/src/utils/appearance.ts

@@ -1,11 +1,11 @@
-const DEFAULT_OPACITY = 0.95;
+const DEFAULT_OPACITY = 1.0;
 const MIN_OPACITY = 0.1;
 const MAX_OPACITY = 1.0;
 
-// macOS 端进一步增强通透感：同滑块值下更低等效不透明度、降低过重模糊。
-const MAC_OPACITY_FACTOR = 0.20;
+// 平台透明度映射因子：值越大，滑块变化越平滑（1.0 = 线性映射）
+const MAC_OPACITY_FACTOR = 0.60;
 const MAC_BLUR_FACTOR = 1.00;
-const WINDOWS_OPACITY_FACTOR = 0.20;
+const WINDOWS_OPACITY_FACTOR = 0.70;
 const WINDOWS_BLUR_FACTOR = 1.00;
 
 const clamp = (value: number, min: number, max: number) => Math.min(max, Math.max(min, value));
@@ -40,6 +40,10 @@ const getPlatformFactors = () => {
 
 export const normalizeOpacityForPlatform = (opacity: number | undefined): number => {
   const raw = clamp(opacity ?? DEFAULT_OPACITY, MIN_OPACITY, MAX_OPACITY);
+  // 用户显式拉到 100%% 时，必须保持完全不透明，不能再被平台映射压低。
+  if (raw >= MAX_OPACITY - 1e-6) {
+    return MAX_OPACITY;
+  }
   const factors = getPlatformFactors();
   if (!factors) {
     return raw;

frontend/src/utils/sql.ts

@@ -23,6 +23,8 @@ const needsQuote = (ident: string): boolean => {
   if (!ident) return false;
   // 如果包含特殊字符（非字母、数字、下划线）则需要引号
   if (!/^[a-zA-Z_][a-zA-Z0-9_]*$/.test(ident)) return true;
+  // PostgreSQL 会将未加引号的标识符折叠为小写，含大写字母时必须加引号
+  if (/[A-Z]/.test(ident)) return true;
   // 常见 SQL 保留字列表（简化版）
   const reserved = ['select', 'from', 'where', 'table', 'index', 'user', 'order', 'group', 'by', 'limit', 'offset', 'and', 'or', 'not', 'null', 'true', 'false', 'key', 'primary', 'foreign', 'references', 'default', 'constraint', 'create', 'drop', 'alter', 'insert', 'update', 'delete', 'set', 'values', 'into', 'join', 'left', 'right', 'inner', 'outer', 'on', 'as', 'is', 'in', 'like', 'between', 'case', 'when', 'then', 'else', 'end', 'having', 'distinct', 'all', 'any', 'exists', 'union', 'except', 'intersect'];
   return reserved.includes(ident.toLowerCase());

frontend/wailsjs/go/app/App.d.ts

@@ -38,6 +38,10 @@ export function DataSyncPreview(arg1:sync.SyncConfig,arg2:string,arg3:number):Pr
 
 export function DownloadUpdate():Promise<connection.QueryResult>;
 
+export function DropDatabase(arg1:connection.ConnectionConfig,arg2:string):Promise<connection.QueryResult>;
+
+export function DropTable(arg1:connection.ConnectionConfig,arg2:string,arg3:string):Promise<connection.QueryResult>;
+
 export function ExportData(arg1:Array<Record<string, any>>,arg2:Array<string>,arg3:string,arg4:string):Promise<connection.QueryResult>;
 
 export function ExportDatabaseSQL(arg1:connection.ConnectionConfig,arg2:string,arg3:boolean):Promise<connection.QueryResult>;
@@ -46,6 +50,8 @@ export function ExportQuery(arg1:connection.ConnectionConfig,arg2:string,arg3:st
 
 export function ExportTable(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
 
+export function ExportTablesDataSQL(arg1:connection.ConnectionConfig,arg2:string,arg3:Array<string>):Promise<connection.QueryResult>;
+
 export function ExportTablesSQL(arg1:connection.ConnectionConfig,arg2:string,arg3:Array<string>,arg4:boolean):Promise<connection.QueryResult>;
 
 export function GetAppInfo():Promise<connection.QueryResult>;
@@ -110,4 +116,8 @@ export function RedisZSetAdd(arg1:connection.ConnectionConfig,arg2:string,arg3:A
 
 export function RedisZSetRemove(arg1:connection.ConnectionConfig,arg2:string,arg3:Array<string>):Promise<connection.QueryResult>;
 
+export function RenameDatabase(arg1:connection.ConnectionConfig,arg2:string,arg3:string):Promise<connection.QueryResult>;
+
+export function RenameTable(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
+
 export function TestConnection(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;

frontend/wailsjs/go/app/App.js

@@ -70,6 +70,14 @@ export function DownloadUpdate() {
   return window['go']['app']['App']['DownloadUpdate']();
 }
 
+export function DropDatabase(arg1, arg2) {
+  return window['go']['app']['App']['DropDatabase'](arg1, arg2);
+}
+
+export function DropTable(arg1, arg2, arg3) {
+  return window['go']['app']['App']['DropTable'](arg1, arg2, arg3);
+}
+
 export function ExportData(arg1, arg2, arg3, arg4) {
   return window['go']['app']['App']['ExportData'](arg1, arg2, arg3, arg4);
 }
@@ -86,6 +94,10 @@ export function ExportTable(arg1, arg2, arg3, arg4) {
   return window['go']['app']['App']['ExportTable'](arg1, arg2, arg3, arg4);
 }
 
+export function ExportTablesDataSQL(arg1, arg2, arg3) {
+  return window['go']['app']['App']['ExportTablesDataSQL'](arg1, arg2, arg3);
+}
+
 export function ExportTablesSQL(arg1, arg2, arg3, arg4) {
   return window['go']['app']['App']['ExportTablesSQL'](arg1, arg2, arg3, arg4);
 }
@@ -214,6 +226,14 @@ export function RedisZSetRemove(arg1, arg2, arg3) {
   return window['go']['app']['App']['RedisZSetRemove'](arg1, arg2, arg3);
 }
 
+export function RenameDatabase(arg1, arg2, arg3) {
+  return window['go']['app']['App']['RenameDatabase'](arg1, arg2, arg3);
+}
+
+export function RenameTable(arg1, arg2, arg3, arg4) {
+  return window['go']['app']['App']['RenameTable'](arg1, arg2, arg3, arg4);
+}
+
 export function TestConnection(arg1) {
   return window['go']['app']['App']['TestConnection'](arg1);
 }

go.mod

@@ -7,9 +7,11 @@ require (
 	gitee.com/chunanyong/dm v1.8.22
 	github.com/go-sql-driver/mysql v1.9.3
 	github.com/lib/pq v1.11.1
+	github.com/microsoft/go-mssqldb v1.9.6
 	github.com/redis/go-redis/v9 v9.17.3
 	github.com/sijms/go-ora/v2 v2.9.0
 	github.com/wailsapp/wails/v2 v2.11.0
+	go.mongodb.org/mongo-driver/v2 v2.5.0
 	golang.org/x/crypto v0.47.0
 	modernc.org/sqlite v1.44.3
 )
@@ -22,10 +24,13 @@ require (
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
+	github.com/golang-sql/civil v0.0.0-20220223132316-b832511892a9 // indirect
+	github.com/golang-sql/sqlexp v0.1.0 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e // indirect
+	github.com/klauspost/compress v1.17.6 // indirect
 	github.com/labstack/echo/v4 v4.13.3 // indirect
 	github.com/labstack/gommon v0.4.2 // indirect
 	github.com/leaanthony/go-ansi-parser v1.6.1 // indirect
@@ -40,13 +45,19 @@ require (
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/samber/lo v1.49.1 // indirect
+	github.com/shopspring/decimal v1.4.0 // indirect
 	github.com/tkrajina/go-reflector v0.5.8 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
 	github.com/wailsapp/go-webview2 v1.0.22 // indirect
 	github.com/wailsapp/mimetype v1.4.1 // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.2.0 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
 	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
 	golang.org/x/net v0.48.0 // indirect
+	golang.org/x/sync v0.19.0 // indirect
 	golang.org/x/sys v0.40.0 // indirect
 	golang.org/x/text v0.33.0 // indirect
 	modernc.org/libc v1.67.6 // indirect

go.sum

@@ -4,6 +4,18 @@ gitea.com/kingbase/gokb v0.0.0-20201021123113-29bd62a876c3 h1:QjslQNaH5Nuap5i4ni
 gitea.com/kingbase/gokb v0.0.0-20201021123113-29bd62a876c3/go.mod h1:7lH5A1jzCXD9Nl16DzaBUOfDAT8NPrDmZwKu1p5wf94=
 gitee.com/chunanyong/dm v1.8.22 h1:H7fsrnUIvEA0jlDWew7vwELry1ff+tLMIu2Fk2cIBSg=
 gitee.com/chunanyong/dm v1.8.22/go.mod h1:EPRJnuPFgbyOFgJ0TRYCTGzhq+ZT4wdyaj/GW/LLcNg=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0 h1:Gt0j3wceWMwPmiazCa8MzMA0MfhmPIz0Qp0FJ6qcM0U=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0/go.mod h1:Ot/6aikWnKWi4l9QB7qVSwa8iMphQNqkWALMoNT3rzM=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.1 h1:B+blDbyVIG3WaikNxPnhPiJ1MThR03b3vKGtER95TP4=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.1/go.mod h1:JdM5psgjfBf5fo2uWOZhflPWyDBZ/O/CNAH9CtsuZE4=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1 h1:FPKJS1T+clwv+OLGt13a8UjqeRuh0O4SJ3lUriThc+4=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1/go.mod h1:j2chePtV91HrC22tGoRX3sGY42uF13WzmmV80/OdVAA=
+github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azkeys v1.3.1 h1:Wgf5rZba3YZqeTNJPtvqZoBu1sBN/L4sry+u2U3Y75w=
+github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/azkeys v1.3.1/go.mod h1:xxCBG/f/4Vbmh2XQJBsOmNdxWUY5j/s27jujKPbQf14=
+github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1 h1:bFWuoEKg+gImo7pvkiQEFAc8ocibADgXeiLAxWhWmkI=
+github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1/go.mod h1:Vih/3yc6yac2JzU4hzpaDupBJP0Flaia9rXXrU8xyww=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 h1:oygO0locgZJe7PpYPXT5A29ZkwJaPqcva7BVeemZOZs=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/bep/debounce v1.2.1 h1:v67fRdBA9UQu2NhLFXrSg0Brw7CexQekrBwDMM8bzeY=
 github.com/bep/debounce v1.2.1/go.mod h1:H8yggRPQKLUhUoqrJC1bO2xNya7vanpDl7xR3ISbCJ0=
 github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
@@ -24,9 +36,17 @@ github.com/go-sql-driver/mysql v1.9.3 h1:U/N249h2WzJ3Ukj8SowVFjdtZKfu9vlLZxjPXV1
 github.com/go-sql-driver/mysql v1.9.3/go.mod h1:qn46aNg1333BRMNU69Lq93t8du/dwxI64Gl8i5p1WMU=
 github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk=
 github.com/godbus/dbus/v5 v5.1.0/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/golang-jwt/jwt/v5 v5.2.2 h1:Rl4B7itRWVtYIHFrSNd7vhTiz9UpLdi6gZhZ3wEeDy8=
+github.com/golang-jwt/jwt/v5 v5.2.2/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
+github.com/golang-sql/civil v0.0.0-20220223132316-b832511892a9 h1:au07oEsX2xN0ktxqI+Sida1w446QrXBRJ0nee3SNZlA=
+github.com/golang-sql/civil v0.0.0-20220223132316-b832511892a9/go.mod h1:8vg3r2VgvsThLBIFL93Qb5yWzgyZWhEmBwUJWevAkK0=
+github.com/golang-sql/sqlexp v0.1.0 h1:ZCD6MBpcuOVfGVqsEmY5/4FtYiKz6tSyUv9LPEDei6A=
+github.com/golang-sql/sqlexp v0.1.0/go.mod h1:J4ad9Vo8ZCWQ2GMrC4UCQy1JpCbwU9m3EOqtpKwwwHI=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
 github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
@@ -37,6 +57,10 @@ github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs
 github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
 github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e h1:Q3+PugElBCf4PFpxhErSzU3/PY5sFL5Z6rfv4AbGAck=
 github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e/go.mod h1:alcuEEnZsY1WQsagKhZDsoPCRoOijYqhZvPwLG0kzVs=
+github.com/klauspost/compress v1.17.6 h1:60eq2E/jlfwQXtvZEeBUYADs+BwKBWURIY+Gj2eRGjI=
+github.com/klauspost/compress v1.17.6/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/labstack/echo/v4 v4.13.3 h1:pwhpCPrTl5qry5HRdM5FwdXnhXSLSY+WE+YQSeCaafY=
 github.com/labstack/echo/v4 v4.13.3/go.mod h1:o90YNEeQWjDozo584l7AwhJMHN0bOC4tAfg+Xox9q5g=
 github.com/labstack/gommon v0.4.2 h1:F8qTUNXgG1+6WQmqoUWnz8WiEU60mXVVw0P4ht1WRA0=
@@ -61,6 +85,8 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/microsoft/go-mssqldb v1.9.6 h1:1MNQg5UiSsokiPz3++K2KPx4moKrwIqly1wv+RyCKTw=
+github.com/microsoft/go-mssqldb v1.9.6/go.mod h1:yYMPDufyoF2vVuVCUGtZARr06DKFIhMrluTcgWlXpr4=
 github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
 github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
 github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ=
@@ -78,6 +104,8 @@ github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/samber/lo v1.49.1 h1:4BIFyVfuQSEpluc7Fua+j1NolZHiEHEpaSEKdsH0tew=
 github.com/samber/lo v1.49.1/go.mod h1:dO6KHFzUKXgP8LDhU0oI8d2hekjXnGOu0DB8Jecxd6o=
+github.com/shopspring/decimal v1.4.0 h1:bxl37RwXBklmTi0C79JfXCEBD1cqqHt0bbgBAGFp81k=
+github.com/shopspring/decimal v1.4.0/go.mod h1:gawqmDU56v4yIKSwfBSFip1HdCCXN8/+DMd9qYNcwME=
 github.com/sijms/go-ora/v2 v2.9.0 h1:+iQbUeTeCOFMb5BsOMgUhV8KWyrv9yjKpcK4x7+MFrg=
 github.com/sijms/go-ora/v2 v2.9.0/go.mod h1:QgFInVi3ZWyqAiJwzBQA+nbKYKH77tdp1PYoCqhR2dU=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
@@ -94,35 +122,66 @@ github.com/wailsapp/mimetype v1.4.1 h1:pQN9ycO7uo4vsUUuPeHEYoUkLVkaRntMnHJxVwYhw
 github.com/wailsapp/mimetype v1.4.1/go.mod h1:9aV5k31bBOv5z6u+QP8TltzvNGJPmNJD4XlAL3U+j3o=
 github.com/wailsapp/wails/v2 v2.11.0 h1:seLacV8pqupq32IjS4Y7V8ucab0WZwtK6VvUVxSBtqQ=
 github.com/wailsapp/wails/v2 v2.11.0/go.mod h1:jrf0ZaM6+GBc1wRmXsM8cIvzlg0karYin3erahI4+0k=
+github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
+github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
+github.com/xdg-go/scram v1.2.0 h1:bYKF2AEwG5rqd1BumT4gAnvwU/M9nBp2pTSxeZw7Wvs=
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internal/app/db_context.go

@@ -14,8 +14,8 @@ func normalizeRunConfig(config connection.ConnectionConfig, dbName string) conne
 	}
 
 	switch strings.ToLower(strings.TrimSpace(config.Type)) {
-	case "mysql", "postgres", "kingbase":
-		// 这些类型的 dbName 表示“数据库”，需要写入连接配置以选择目标库。
+	case "mysql", "mariadb", "postgres", "kingbase", "highgo", "vastbase", "sqlserver", "mongodb":
+		// 这些类型的 dbName 表示"数据库"，需要写入连接配置以选择目标库。
 		runConfig.Database = name
 	case "dameng":
 		// 达梦使用 schema 参数，沿用现有行为：dbName 表示 schema。
@@ -45,9 +45,12 @@ func normalizeSchemaAndTable(config connection.ConnectionConfig, dbName string,
 	}
 
 	switch strings.ToLower(strings.TrimSpace(config.Type)) {
-	case "postgres", "kingbase":
-		// PG/金仓：dbName 在 UI 里是“数据库”，schema 需从 tableName 或使用默认 public。
+	case "postgres", "kingbase", "highgo", "vastbase":
+		// PG/金仓/瀚高/海量：dbName 在 UI 里是"数据库"，schema 需从 tableName 或使用默认 public。
 		return "public", rawTable
+	case "sqlserver":
+		// SQL Server：dbName 表示数据库，schema 默认 dbo
+		return "dbo", rawTable
 	default:
 		// MySQL：dbName 表示数据库；Oracle/达梦：dbName 表示 schema/owner。
 		return rawDB, rawTable

internal/app/methods_db.go

@@ -20,7 +20,7 @@ func (a *App) DBConnect(config connection.ConnectionConfig) connection.QueryResu
 		logger.Error(err, "DBConnect 连接失败：%s", formatConnSummary(config))
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
-	
+
 	logger.Infof("DBConnect 连接成功：%s", formatConnSummary(config))
 	return connection.QueryResult{Success: true, Message: "连接成功"}
 }
@@ -31,14 +31,14 @@ func (a *App) TestConnection(config connection.ConnectionConfig) connection.Quer
 		logger.Error(err, "TestConnection 连接测试失败：%s", formatConnSummary(config))
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
-	
+
 	logger.Infof("TestConnection 连接测试成功：%s", formatConnSummary(config))
 	return connection.QueryResult{Success: true, Message: "连接成功"}
 }
 
 func (a *App) CreateDatabase(config connection.ConnectionConfig, dbName string) connection.QueryResult {
 	runConfig := config
-	runConfig.Database = "" 
+	runConfig.Database = ""
 
 	dbInst, err := a.getDatabase(runConfig)
 	if err != nil {
@@ -47,9 +47,12 @@ func (a *App) CreateDatabase(config connection.ConnectionConfig, dbName string)
 
 	escapedDbName := strings.ReplaceAll(dbName, "`", "``")
 	query := fmt.Sprintf("CREATE DATABASE `%s` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci", escapedDbName)
-	if runConfig.Type == "postgres" {
+	dbType := strings.ToLower(strings.TrimSpace(runConfig.Type))
+	if dbType == "postgres" || dbType == "kingbase" || dbType == "highgo" || dbType == "vastbase" {
 		escapedDbName = strings.ReplaceAll(dbName, `"`, `""`)
 		query = fmt.Sprintf("CREATE DATABASE \"%s\"", escapedDbName)
+	} else if dbType == "mariadb" {
+		// MariaDB uses same syntax as MySQL
 	}
 
 	_, err = dbInst.Exec(query)
@@ -60,6 +63,230 @@ func (a *App) CreateDatabase(config connection.ConnectionConfig, dbName string)
 	return connection.QueryResult{Success: true, Message: "Database created successfully"}
 }
 
+func resolveDDLDBType(config connection.ConnectionConfig) string {
+	dbType := strings.ToLower(strings.TrimSpace(config.Type))
+	if dbType != "custom" {
+		return dbType
+	}
+
+	driver := strings.ToLower(strings.TrimSpace(config.Driver))
+	switch driver {
+	case "postgresql":
+		return "postgres"
+	case "dm":
+		return "dameng"
+	case "sqlite3":
+		return "sqlite"
+	default:
+		return driver
+	}
+}
+
+func normalizeSchemaAndTableByType(dbType string, dbName string, tableName string) (string, string) {
+	rawTable := strings.TrimSpace(tableName)
+	rawDB := strings.TrimSpace(dbName)
+	if rawTable == "" {
+		return rawDB, rawTable
+	}
+
+	if parts := strings.SplitN(rawTable, ".", 2); len(parts) == 2 {
+		schema := strings.TrimSpace(parts[0])
+		table := strings.TrimSpace(parts[1])
+		if schema != "" && table != "" {
+			return schema, table
+		}
+	}
+
+	switch dbType {
+	case "postgres", "kingbase", "highgo", "vastbase":
+		return "public", rawTable
+	default:
+		return rawDB, rawTable
+	}
+}
+
+func quoteTableIdentByType(dbType string, schema string, table string) string {
+	s := strings.TrimSpace(schema)
+	t := strings.TrimSpace(table)
+	if s == "" {
+		return quoteIdentByType(dbType, t)
+	}
+	return fmt.Sprintf("%s.%s", quoteIdentByType(dbType, s), quoteIdentByType(dbType, t))
+}
+
+func buildRunConfigForDDL(config connection.ConnectionConfig, dbType string, dbName string) connection.ConnectionConfig {
+	runConfig := normalizeRunConfig(config, dbName)
+	if strings.EqualFold(strings.TrimSpace(config.Type), "custom") {
+		// custom 连接的 dbName 语义依赖 driver，尽量在常见驱动上对齐内置类型行为。
+		switch dbType {
+		case "mysql", "mariadb", "postgres", "kingbase", "vastbase", "dameng":
+			if strings.TrimSpace(dbName) != "" {
+				runConfig.Database = strings.TrimSpace(dbName)
+			}
+		}
+	}
+	return runConfig
+}
+
+func (a *App) RenameDatabase(config connection.ConnectionConfig, oldName string, newName string) connection.QueryResult {
+	oldName = strings.TrimSpace(oldName)
+	newName = strings.TrimSpace(newName)
+	if oldName == "" || newName == "" {
+		return connection.QueryResult{Success: false, Message: "数据库名称不能为空"}
+	}
+	if strings.EqualFold(oldName, newName) {
+		return connection.QueryResult{Success: false, Message: "新旧数据库名称不能相同"}
+	}
+
+	dbType := resolveDDLDBType(config)
+	switch dbType {
+	case "mysql", "mariadb":
+		return connection.QueryResult{Success: false, Message: "MySQL/MariaDB 不支持直接重命名数据库，请新建库后迁移数据"}
+	case "postgres", "kingbase", "highgo", "vastbase":
+		if strings.EqualFold(strings.TrimSpace(config.Database), oldName) {
+			return connection.QueryResult{Success: false, Message: "当前连接正在使用目标数据库，请先连接到其他数据库后再重命名"}
+		}
+		runConfig := config
+		if strings.TrimSpace(runConfig.Database) == "" {
+			runConfig.Database = "postgres"
+		}
+		dbInst, err := a.getDatabase(runConfig)
+		if err != nil {
+			return connection.QueryResult{Success: false, Message: err.Error()}
+		}
+		sql := fmt.Sprintf("ALTER DATABASE %s RENAME TO %s", quoteIdentByType(dbType, oldName), quoteIdentByType(dbType, newName))
+		if _, err := dbInst.Exec(sql); err != nil {
+			return connection.QueryResult{Success: false, Message: err.Error()}
+		}
+		return connection.QueryResult{Success: true, Message: "数据库重命名成功"}
+	default:
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持重命名数据库", dbType)}
+	}
+}
+
+func (a *App) DropDatabase(config connection.ConnectionConfig, dbName string) connection.QueryResult {
+	dbName = strings.TrimSpace(dbName)
+	if dbName == "" {
+		return connection.QueryResult{Success: false, Message: "数据库名称不能为空"}
+	}
+
+	dbType := resolveDDLDBType(config)
+	var (
+		runConfig connection.ConnectionConfig
+		sql       string
+	)
+	switch dbType {
+	case "mysql", "mariadb":
+		runConfig = config
+		runConfig.Database = ""
+		sql = fmt.Sprintf("DROP DATABASE %s", quoteIdentByType(dbType, dbName))
+	case "postgres", "kingbase", "highgo", "vastbase":
+		if strings.EqualFold(strings.TrimSpace(config.Database), dbName) {
+			return connection.QueryResult{Success: false, Message: "当前连接正在使用目标数据库，请先连接到其他数据库后再删除"}
+		}
+		runConfig = config
+		if strings.TrimSpace(runConfig.Database) == "" {
+			runConfig.Database = "postgres"
+		}
+		sql = fmt.Sprintf("DROP DATABASE %s", quoteIdentByType(dbType, dbName))
+	default:
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持删除数据库", dbType)}
+	}
+
+	dbInst, err := a.getDatabase(runConfig)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if _, err := dbInst.Exec(sql); err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	return connection.QueryResult{Success: true, Message: "数据库删除成功"}
+}
+
+func (a *App) RenameTable(config connection.ConnectionConfig, dbName string, oldTableName string, newTableName string) connection.QueryResult {
+	oldTableName = strings.TrimSpace(oldTableName)
+	newTableName = strings.TrimSpace(newTableName)
+	if oldTableName == "" || newTableName == "" {
+		return connection.QueryResult{Success: false, Message: "表名不能为空"}
+	}
+	if strings.EqualFold(oldTableName, newTableName) {
+		return connection.QueryResult{Success: false, Message: "新旧表名不能相同"}
+	}
+	if strings.Contains(newTableName, ".") {
+		return connection.QueryResult{Success: false, Message: "新表名不能包含 schema 或数据库前缀"}
+	}
+
+	dbType := resolveDDLDBType(config)
+	switch dbType {
+	case "mysql", "mariadb", "postgres", "kingbase", "sqlite", "oracle", "dameng", "highgo", "vastbase", "sqlserver":
+	default:
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持重命名表", dbType)}
+	}
+
+	schemaName, pureOldTableName := normalizeSchemaAndTableByType(dbType, dbName, oldTableName)
+	if pureOldTableName == "" {
+		return connection.QueryResult{Success: false, Message: "旧表名不能为空"}
+	}
+	oldQualifiedTable := quoteTableIdentByType(dbType, schemaName, pureOldTableName)
+	newTableQuoted := quoteIdentByType(dbType, newTableName)
+
+	var sql string
+	switch dbType {
+	case "mysql", "mariadb":
+		newQualifiedTable := quoteTableIdentByType(dbType, schemaName, newTableName)
+		sql = fmt.Sprintf("RENAME TABLE %s TO %s", oldQualifiedTable, newQualifiedTable)
+	case "sqlserver":
+		// SQL Server 使用 sp_rename，参数为 'schema.oldname', 'newname'
+		oldFullName := schemaName + "." + pureOldTableName
+		escapedOld := strings.ReplaceAll(oldFullName, "'", "''")
+		escapedNew := strings.ReplaceAll(newTableName, "'", "''")
+		sql = fmt.Sprintf("EXEC sp_rename '%s', '%s'", escapedOld, escapedNew)
+	default:
+		sql = fmt.Sprintf("ALTER TABLE %s RENAME TO %s", oldQualifiedTable, newTableQuoted)
+	}
+
+	runConfig := buildRunConfigForDDL(config, dbType, dbName)
+	dbInst, err := a.getDatabase(runConfig)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if _, err := dbInst.Exec(sql); err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	return connection.QueryResult{Success: true, Message: "表重命名成功"}
+}
+
+func (a *App) DropTable(config connection.ConnectionConfig, dbName string, tableName string) connection.QueryResult {
+	tableName = strings.TrimSpace(tableName)
+	if tableName == "" {
+		return connection.QueryResult{Success: false, Message: "表名不能为空"}
+	}
+
+	dbType := resolveDDLDBType(config)
+	switch dbType {
+	case "mysql", "mariadb", "postgres", "kingbase", "sqlite", "oracle", "dameng", "highgo", "vastbase", "sqlserver":
+	default:
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持删除表", dbType)}
+	}
+
+	schemaName, pureTableName := normalizeSchemaAndTableByType(dbType, dbName, tableName)
+	if pureTableName == "" {
+		return connection.QueryResult{Success: false, Message: "表名不能为空"}
+	}
+	qualifiedTable := quoteTableIdentByType(dbType, schemaName, pureTableName)
+	sql := fmt.Sprintf("DROP TABLE %s", qualifiedTable)
+
+	runConfig := buildRunConfigForDDL(config, dbType, dbName)
+	dbInst, err := a.getDatabase(runConfig)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if _, err := dbInst.Exec(sql); err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	return connection.QueryResult{Success: true, Message: "表删除成功"}
+}
+
 func (a *App) MySQLConnect(config connection.ConnectionConfig) connection.QueryResult {
 	config.Type = "mysql"
 	return a.DBConnect(config)
@@ -156,12 +383,12 @@ func (a *App) DBGetDatabases(config connection.ConnectionConfig) connection.Quer
 		logger.Error(err, "DBGetDatabases 获取数据库列表失败：%s", formatConnSummary(config))
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
-	
+
 	var resData []map[string]string
 	for _, name := range dbs {
 		resData = append(resData, map[string]string{"Database": name})
 	}
-	
+
 	return connection.QueryResult{Success: true, Data: resData}
 }
 

internal/app/methods_file.go

@@ -102,8 +102,8 @@ func (a *App) ImportData(config connection.ConnectionConfig, dbName, tableName s
 	}
 	defer f.Close()
 
-	var rows []map[string]interface{ } 
-	
+	var rows []map[string]interface{}
+
 	if strings.HasSuffix(strings.ToLower(selection), ".json") {
 		decoder := json.NewDecoder(f)
 		if err := decoder.Decode(&rows); err != nil {
@@ -120,7 +120,7 @@ func (a *App) ImportData(config connection.ConnectionConfig, dbName, tableName s
 		}
 		headers := records[0]
 		for _, record := range records[1:] {
-			row := make(map[string]interface{ })
+			row := make(map[string]interface{})
 			for i, val := range record {
 				if i < len(headers) {
 					if val == "NULL" {
@@ -153,7 +153,7 @@ func (a *App) ImportData(config connection.ConnectionConfig, dbName, tableName s
 	for k := range firstRow {
 		cols = append(cols, k)
 	}
-	
+
 	for _, row := range rows {
 		var values []string
 		for _, col := range cols {
@@ -195,7 +195,7 @@ func (a *App) ApplyChanges(config connection.ConnectionConfig, dbName, tableName
 	if err != nil {
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
-	
+
 	if applier, ok := dbInst.(db.BatchApplier); ok {
 		err := applier.ApplyChanges(tableName, changes)
 		if err != nil {
@@ -219,7 +219,7 @@ func (a *App) ExportTable(config connection.ConnectionConfig, dbName string, tab
 
 	runConfig := normalizeRunConfig(config, dbName)
 
-dbInst, err := a.getDatabase(runConfig)
+	dbInst, err := a.getDatabase(runConfig)
 	if err != nil {
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
@@ -238,7 +238,7 @@ dbInst, err := a.getDatabase(runConfig)
 		if err := writeSQLHeader(w, runConfig, dbName); err != nil {
 			return connection.QueryResult{Success: false, Message: err.Error()}
 		}
-		if err := dumpTableSQL(w, dbInst, runConfig, dbName, tableName, true); err != nil {
+		if err := dumpTableSQL(w, dbInst, runConfig, dbName, tableName, true, true); err != nil {
 			return connection.QueryResult{Success: false, Message: err.Error()}
 		}
 		if err := writeSQLFooter(w, runConfig); err != nil {
@@ -249,8 +249,8 @@ dbInst, err := a.getDatabase(runConfig)
 	}
 
 	query := fmt.Sprintf("SELECT * FROM %s", quoteQualifiedIdentByType(runConfig.Type, tableName))
-	
-data, columns, err := dbInst.Query(query)
+
+	data, columns, err := dbInst.Query(query)
 	if err != nil {
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
@@ -268,13 +268,27 @@ data, columns, err := dbInst.Query(query)
 }
 
 func (a *App) ExportTablesSQL(config connection.ConnectionConfig, dbName string, tableNames []string, includeData bool) connection.QueryResult {
+	return a.exportTablesSQL(config, dbName, tableNames, true, includeData)
+}
+
+func (a *App) ExportTablesDataSQL(config connection.ConnectionConfig, dbName string, tableNames []string) connection.QueryResult {
+	return a.exportTablesSQL(config, dbName, tableNames, false, true)
+}
+
+func (a *App) exportTablesSQL(config connection.ConnectionConfig, dbName string, tableNames []string, includeSchema bool, includeData bool) connection.QueryResult {
+	if !includeSchema && !includeData {
+		return connection.QueryResult{Success: false, Message: "invalid export mode"}
+	}
+
 	safeDbName := strings.TrimSpace(dbName)
 	if safeDbName == "" {
 		safeDbName = "export"
 	}
 	suffix := "schema"
-	if includeData {
+	if includeSchema && includeData {
 		suffix = "backup"
+	} else if !includeSchema && includeData {
+		suffix = "data"
 	}
 	defaultFilename := fmt.Sprintf("%s_%s_%dtables.sql", safeDbName, suffix, len(tableNames))
 	if len(tableNames) == 1 && strings.TrimSpace(tableNames[0]) != "" {
@@ -323,7 +337,7 @@ func (a *App) ExportTablesSQL(config connection.ConnectionConfig, dbName string,
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
 	for _, t := range tables {
-		if err := dumpTableSQL(w, dbInst, runConfig, dbName, t, includeData); err != nil {
+		if err := dumpTableSQL(w, dbInst, runConfig, dbName, t, includeSchema, includeData); err != nil {
 			return connection.QueryResult{Success: false, Message: err.Error()}
 		}
 	}
@@ -377,7 +391,7 @@ func (a *App) ExportDatabaseSQL(config connection.ConnectionConfig, dbName strin
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
 	for _, t := range tables {
-		if err := dumpTableSQL(w, dbInst, runConfig, dbName, t, includeData); err != nil {
+		if err := dumpTableSQL(w, dbInst, runConfig, dbName, t, true, includeData); err != nil {
 			return connection.QueryResult{Success: false, Message: err.Error()}
 		}
 	}
@@ -394,8 +408,11 @@ func quoteIdentByType(dbType string, ident string) string {
 	}
 
 	switch dbType {
-	case "mysql":
+	case "mysql", "mariadb":
 		return "`" + strings.ReplaceAll(ident, "`", "``") + "`"
+	case "sqlserver":
+		escaped := strings.ReplaceAll(ident, "]", "]]")
+		return "[" + escaped + "]"
 	default:
 		return `"` + strings.ReplaceAll(ident, `"`, `""`) + `"`
 	}
@@ -534,7 +551,7 @@ func formatSQLValue(dbType string, v interface{}) string {
 	}
 }
 
-func dumpTableSQL(w *bufio.Writer, dbInst db.Database, config connection.ConnectionConfig, dbName, tableName string, includeData bool) error {
+func dumpTableSQL(w *bufio.Writer, dbInst db.Database, config connection.ConnectionConfig, dbName, tableName string, includeSchema bool, includeData bool) error {
 	schemaName, pureTableName := normalizeSchemaAndTable(config, dbName, tableName)
 
 	if _, err := w.WriteString("\n-- ----------------------------\n"); err != nil {
@@ -547,15 +564,17 @@ func dumpTableSQL(w *bufio.Writer, dbInst db.Database, config connection.Connect
 		return err
 	}
 
-	createSQL, err := dbInst.GetCreateStatement(schemaName, pureTableName)
-	if err != nil {
-		return err
-	}
-	if _, err := w.WriteString(ensureSQLTerminator(createSQL)); err != nil {
-		return err
-	}
-	if _, err := w.WriteString("\n\n"); err != nil {
-		return err
+	if includeSchema {
+		createSQL, err := dbInst.GetCreateStatement(schemaName, pureTableName)
+		if err != nil {
+			return err
+		}
+		if _, err := w.WriteString(ensureSQLTerminator(createSQL)); err != nil {
+			return err
+		}
+		if _, err := w.WriteString("\n\n"); err != nil {
+			return err
+		}
 	}
 
 	if !includeData {

internal/app/methods_update.go

@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"math"
 	"net/http"
 	"os"
 	"os/exec"
@@ -22,9 +23,10 @@ import (
 )
 
 const (
-	updateRepo          = "Syngnat/GoNavi"
-	updateAPIURL        = "https://api.github.com/repos/" + updateRepo + "/releases/latest"
-	updateChecksumAsset = "SHA256SUMS"
+	updateRepo                  = "Syngnat/GoNavi"
+	updateAPIURL                = "https://api.github.com/repos/" + updateRepo + "/releases/latest"
+	updateChecksumAsset         = "SHA256SUMS"
+	updateDownloadProgressEvent = "update:download-progress"
 )
 
 type updateState struct {
@@ -54,11 +56,29 @@ type AppInfo struct {
 	BuildTime  string `json:"buildTime,omitempty"`
 }
 
+type updateDownloadResult struct {
+	Info           UpdateInfo `json:"info"`
+	DownloadPath   string     `json:"downloadPath,omitempty"`
+	InstallLogPath string     `json:"installLogPath,omitempty"`
+	InstallTarget  string     `json:"installTarget,omitempty"`
+	Platform       string     `json:"platform"`
+	AutoRelaunch   bool       `json:"autoRelaunch"`
+}
+
+type updateDownloadProgressPayload struct {
+	Status     string  `json:"status"`
+	Percent    float64 `json:"percent"`
+	Downloaded int64   `json:"downloaded"`
+	Total      int64   `json:"total"`
+	Message    string  `json:"message,omitempty"`
+}
+
 type stagedUpdate struct {
-	Version   string
-	AssetName string
-	FilePath  string
-	StagedDir string
+	Version        string
+	AssetName      string
+	FilePath       string
+	StagedDir      string
+	InstallLogPath string
 }
 
 type githubRelease struct {
@@ -124,13 +144,15 @@ func (a *App) DownloadUpdate() connection.QueryResult {
 		a.updateMu.Unlock()
 		return connection.QueryResult{Success: false, Message: "未找到可用的更新包"}
 	}
-	if a.updateState.staged != nil && a.updateState.staged.Version == info.LatestVersion {
+	staged := a.updateState.staged
+	if staged != nil && staged.Version == info.LatestVersion {
 		a.updateMu.Unlock()
-		return connection.QueryResult{Success: true, Message: "更新包已下载完成", Data: info}
+		return connection.QueryResult{Success: true, Message: "更新包已下载完成", Data: buildUpdateDownloadResult(*info, staged)}
 	}
 	a.updateState.downloading = true
 	a.updateMu.Unlock()
 
+	a.emitUpdateDownloadProgress("start", 0, info.AssetSize, "")
 	result := a.downloadAndStageUpdate(*info)
 
 	a.updateMu.Lock()
@@ -143,6 +165,9 @@ func (a *App) DownloadUpdate() connection.QueryResult {
 func (a *App) InstallUpdateAndRestart() connection.QueryResult {
 	a.updateMu.Lock()
 	staged := a.updateState.staged
+	if staged != nil && strings.TrimSpace(staged.InstallLogPath) == "" {
+		staged.InstallLogPath = buildUpdateInstallLogPath(filepath.Dir(staged.FilePath))
+	}
 	a.updateMu.Unlock()
 	if staged == nil {
 		return connection.QueryResult{Success: false, Message: "未找到已下载的更新包"}
@@ -150,7 +175,17 @@ func (a *App) InstallUpdateAndRestart() connection.QueryResult {
 
 	if err := launchUpdateScript(staged); err != nil {
 		logger.Error(err, "启动更新脚本失败")
-		return connection.QueryResult{Success: false, Message: err.Error()}
+		msg := err.Error()
+		if staged.InstallLogPath != "" {
+			msg = fmt.Sprintf("%s（更新日志：%s）", msg, staged.InstallLogPath)
+		}
+		return connection.QueryResult{
+			Success: false,
+			Message: msg,
+			Data: map[string]any{
+				"logPath": staged.InstallLogPath,
+			},
+		}
 	}
 
 	go func() {
@@ -161,41 +196,79 @@ func (a *App) InstallUpdateAndRestart() connection.QueryResult {
 		os.Exit(0)
 	}()
 
-	return connection.QueryResult{Success: true, Message: "更新已开始安装"}
+	msg := "更新已开始安装"
+	if staged.InstallLogPath != "" {
+		msg = fmt.Sprintf("更新已开始安装，日志路径：%s", staged.InstallLogPath)
+	}
+	return connection.QueryResult{
+		Success: true,
+		Message: msg,
+		Data: map[string]any{
+			"logPath": staged.InstallLogPath,
+		},
+	}
 }
 
 func (a *App) downloadAndStageUpdate(info UpdateInfo) connection.QueryResult {
-	stagedDir, err := os.MkdirTemp("", "gonavi-update-")
-	if err != nil {
-		return connection.QueryResult{Success: false, Message: "创建临时目录失败"}
+	workspaceDir := strings.TrimSpace(resolveUpdateWorkspaceDir())
+	if workspaceDir == "" {
+		a.emitUpdateDownloadProgress("error", 0, info.AssetSize, "无法确定当前应用目录")
+		return connection.QueryResult{Success: false, Message: "无法确定当前应用目录，无法下载更新"}
+	}
+	if err := os.MkdirAll(workspaceDir, 0o755); err != nil {
+		errMsg := fmt.Sprintf("无法访问应用目录：%s", workspaceDir)
+		a.emitUpdateDownloadProgress("error", 0, info.AssetSize, errMsg)
+		return connection.QueryResult{Success: false, Message: errMsg}
 	}
 
-	assetPath := filepath.Join(stagedDir, info.AssetName)
-	actualHash, err := downloadFileWithHash(info.AssetURL, assetPath)
+	stagedDir, err := os.MkdirTemp(workspaceDir, ".gonavi-update-work-")
 	if err != nil {
+		errMsg := fmt.Sprintf("无法在应用目录创建更新工作目录：%s", workspaceDir)
+		a.emitUpdateDownloadProgress("error", 0, info.AssetSize, errMsg)
+		return connection.QueryResult{Success: false, Message: errMsg}
+	}
+
+	assetPath := filepath.Join(workspaceDir, info.AssetName)
+	actualHash, err := downloadFileWithHash(info.AssetURL, assetPath, func(downloaded, total int64) {
+		reportTotal := total
+		if reportTotal <= 0 {
+			reportTotal = info.AssetSize
+		}
+		a.emitUpdateDownloadProgress("downloading", downloaded, reportTotal, "")
+	})
+	if err != nil {
+		_ = os.Remove(assetPath)
 		_ = os.RemoveAll(stagedDir)
+		a.emitUpdateDownloadProgress("error", 0, info.AssetSize, err.Error())
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
 
 	if info.SHA256 == "" {
+		_ = os.Remove(assetPath)
 		_ = os.RemoveAll(stagedDir)
+		a.emitUpdateDownloadProgress("error", 0, info.AssetSize, "缺少更新包校验值（SHA256SUMS）")
 		return connection.QueryResult{Success: false, Message: "缺少更新包校验值（SHA256SUMS）"}
 	}
 	if !strings.EqualFold(info.SHA256, actualHash) {
+		_ = os.Remove(assetPath)
 		_ = os.RemoveAll(stagedDir)
+		a.emitUpdateDownloadProgress("error", 0, info.AssetSize, "更新包校验失败，请重试")
 		return connection.QueryResult{Success: false, Message: "更新包校验失败，请重试"}
 	}
 
-	a.updateMu.Lock()
-	a.updateState.staged = &stagedUpdate{
-		Version:   info.LatestVersion,
-		AssetName: info.AssetName,
-		FilePath:  assetPath,
-		StagedDir: stagedDir,
+	staged := &stagedUpdate{
+		Version:        info.LatestVersion,
+		AssetName:      info.AssetName,
+		FilePath:       assetPath,
+		StagedDir:      stagedDir,
+		InstallLogPath: buildUpdateInstallLogPath(workspaceDir),
 	}
+	a.updateMu.Lock()
+	a.updateState.staged = staged
 	a.updateMu.Unlock()
 
-	return connection.QueryResult{Success: true, Message: "更新包下载完成", Data: info}
+	a.emitUpdateDownloadProgress("done", info.AssetSize, info.AssetSize, "")
+	return connection.QueryResult{Success: true, Message: "更新包下载完成", Data: buildUpdateDownloadResult(info, staged)}
 }
 
 func fetchLatestUpdateInfo() (UpdateInfo, error) {
@@ -370,7 +443,32 @@ func parseSHA256Sums(content string) map[string]string {
 	return result
 }
 
-func downloadFileWithHash(url, filePath string) (string, error) {
+type downloadProgressWriter struct {
+	total      int64
+	written    int64
+	lastEmit   time.Time
+	emitEvery  time.Duration
+	onProgress func(downloaded, total int64)
+}
+
+func (w *downloadProgressWriter) Write(p []byte) (int, error) {
+	n := len(p)
+	if n == 0 {
+		return 0, nil
+	}
+	w.written += int64(n)
+	if w.onProgress == nil {
+		return n, nil
+	}
+	now := time.Now()
+	if w.lastEmit.IsZero() || now.Sub(w.lastEmit) >= w.emitEvery || (w.total > 0 && w.written >= w.total) {
+		w.lastEmit = now
+		w.onProgress(w.written, w.total)
+	}
+	return n, nil
+}
+
+func downloadFileWithHash(url, filePath string, onProgress func(downloaded, total int64)) (string, error) {
 	client := &http.Client{Timeout: 10 * time.Minute}
 	req, err := http.NewRequest(http.MethodGet, url, nil)
 	if err != nil {
@@ -395,14 +493,99 @@ func downloadFileWithHash(url, filePath string) (string, error) {
 	defer out.Close()
 
 	hasher := sha256.New()
-	writer := io.MultiWriter(out, hasher)
-	if _, err := io.Copy(writer, resp.Body); err != nil {
+	total := resp.ContentLength
+	progressWriter := &downloadProgressWriter{
+		total:      total,
+		emitEvery:  120 * time.Millisecond,
+		onProgress: onProgress,
+	}
+	writers := []io.Writer{out, hasher, progressWriter}
+	if onProgress != nil {
+		onProgress(0, total)
+	}
+	if _, err := io.Copy(io.MultiWriter(writers...), resp.Body); err != nil {
 		return "", err
 	}
+	if onProgress != nil {
+		onProgress(progressWriter.written, total)
+	}
 
 	return hex.EncodeToString(hasher.Sum(nil)), nil
 }
 
+func buildUpdateDownloadResult(info UpdateInfo, staged *stagedUpdate) updateDownloadResult {
+	result := updateDownloadResult{
+		Info:          info,
+		Platform:      stdRuntime.GOOS,
+		InstallTarget: resolveUpdateInstallTarget(),
+		AutoRelaunch:  true,
+	}
+	if staged != nil {
+		result.DownloadPath = staged.FilePath
+		result.InstallLogPath = staged.InstallLogPath
+	}
+	return result
+}
+
+func buildUpdateInstallLogPath(baseDir string) string {
+	platform := stdRuntime.GOOS
+	if platform == "darwin" {
+		platform = "macos"
+	}
+	logDir := strings.TrimSpace(baseDir)
+	if logDir == "" {
+		logDir = os.TempDir()
+	}
+	return filepath.Join(logDir, fmt.Sprintf("gonavi-update-%s-%d.log", platform, time.Now().UnixNano()))
+}
+
+func resolveUpdateWorkspaceDir() string {
+	exePath, err := os.Executable()
+	if err != nil {
+		return ""
+	}
+	exePath, _ = filepath.EvalSymlinks(exePath)
+	if stdRuntime.GOOS == "darwin" {
+		appPath := detectMacAppPath(exePath)
+		if appPath != "" {
+			return filepath.Dir(appPath)
+		}
+	}
+	return filepath.Dir(exePath)
+}
+
+func resolveUpdateInstallTarget() string {
+	exePath, err := os.Executable()
+	if err != nil {
+		return ""
+	}
+	exePath, _ = filepath.EvalSymlinks(exePath)
+	if stdRuntime.GOOS == "darwin" {
+		return resolveMacUpdateTarget(exePath)
+	}
+	return exePath
+}
+
+func (a *App) emitUpdateDownloadProgress(status string, downloaded, total int64, message string) {
+	if a.ctx == nil {
+		return
+	}
+	payload := updateDownloadProgressPayload{
+		Status:     status,
+		Percent:    0,
+		Downloaded: downloaded,
+		Total:      total,
+		Message:    strings.TrimSpace(message),
+	}
+	if total > 0 {
+		payload.Percent = math.Min(100, (float64(downloaded)/float64(total))*100)
+	}
+	if status == "done" && payload.Percent < 100 {
+		payload.Percent = 100
+	}
+	wailsRuntime.EventsEmit(a.ctx, updateDownloadProgressEvent, payload)
+}
+
 func launchUpdateScript(staged *stagedUpdate) error {
 	exePath, err := os.Executable()
 	if err != nil {
@@ -425,7 +608,11 @@ func launchUpdateScript(staged *stagedUpdate) error {
 
 func launchWindowsUpdate(staged *stagedUpdate, targetExe string, pid int) error {
 	scriptPath := filepath.Join(staged.StagedDir, "update.cmd")
-	logPath := filepath.Join(staged.StagedDir, "update.log")
+	logPath := strings.TrimSpace(staged.InstallLogPath)
+	if logPath == "" {
+		logPath = buildUpdateInstallLogPath(filepath.Dir(staged.FilePath))
+		staged.InstallLogPath = logPath
+	}
 	content := buildWindowsScript(staged.FilePath, targetExe, staged.StagedDir, logPath, pid)
 	if err := os.WriteFile(scriptPath, []byte(content), 0o644); err != nil {
 		return err
@@ -442,7 +629,11 @@ func launchMacUpdate(staged *stagedUpdate, targetExe string, pid int) error {
 	if err := os.MkdirAll(mountDir, 0o755); err != nil {
 		return err
 	}
-	logPath := filepath.Join(staged.StagedDir, "update.log")
+	logPath := strings.TrimSpace(staged.InstallLogPath)
+	if logPath == "" {
+		logPath = buildUpdateInstallLogPath(filepath.Dir(staged.FilePath))
+		staged.InstallLogPath = logPath
+	}
 
 	scriptPath := filepath.Join(staged.StagedDir, "update.sh")
 	content := buildMacScript(staged.FilePath, targetApp, staged.StagedDir, mountDir, logPath, pid)
@@ -509,8 +700,12 @@ exit /b 1
 :move_done
 start "" "%%TARGET%%" >> "%%LOG_FILE%%" 2>&1
 if %%ERRORLEVEL%% NEQ 0 (
-  call :log relaunch failed
-  exit /b 1
+  call :log cmd start failed, trying powershell Start-Process
+  powershell -NoProfile -ExecutionPolicy Bypass -Command "Start-Process -FilePath '%%TARGET%%'" >> "%%LOG_FILE%%" 2>&1
+  if %%ERRORLEVEL%% NEQ 0 (
+    call :log relaunch failed
+    exit /b 1
+  )
 )
 rmdir /S /Q "%%STAGED%%" >> "%%LOG_FILE%%" 2>&1
 call :log update finished
@@ -531,30 +726,69 @@ TARGET_APP="%s"
 STAGED="%s"
 MOUNT_DIR="%s"
 LOG_FILE="%s"
+TMP_APP="${TARGET_APP}.new"
+BACKUP_APP="${TARGET_APP}.backup"
+APP_BIN_NAME=$(basename "$TARGET_APP" .app)
+APP_BIN_REL="Contents/MacOS/$APP_BIN_NAME"
 
 log() {
   echo "[$(date '+%%Y-%%m-%%d %%H:%%M:%%S')] $*" >> "$LOG_FILE"
 }
 
-run_admin_install() {
-  /usr/bin/osascript <<'APPLESCRIPT' "$APP_SRC" "$TARGET_APP" "$LOG_FILE"
+run_admin_replace() {
+  /usr/bin/osascript <<'APPLESCRIPT' "$APP_SRC" "$TARGET_APP" "$TMP_APP" "$BACKUP_APP" "$APP_BIN_REL" "$LOG_FILE"
 on run argv
   set srcPath to item 1 of argv
   set dstPath to item 2 of argv
-  set logPath to item 3 of argv
-  do shell script "rm -rf " & quoted form of dstPath & " && cp -R " & quoted form of srcPath & " " & quoted form of dstPath & " >> " & quoted form of logPath & " 2>&1" with administrator privileges
+  set tmpPath to item 3 of argv
+  set bakPath to item 4 of argv
+  set binRel to item 5 of argv
+  set logPath to item 6 of argv
+  set cmd to "set -eu; " & ¬
+    "rm -rf " & quoted form of tmpPath & " " & quoted form of bakPath & "; " & ¬
+    "/usr/bin/ditto " & quoted form of srcPath & " " & quoted form of tmpPath & "; " & ¬
+    "if [ ! -x " & quoted form of (tmpPath & "/" & binRel) & " ]; then echo 'tmp app binary missing' >> " & quoted form of logPath & "; exit 1; fi; " & ¬
+    "xattr -rd com.apple.quarantine " & quoted form of tmpPath & " >> " & quoted form of logPath & " 2>&1 || true; " & ¬
+    "if [ -d " & quoted form of dstPath & " ]; then mv " & quoted form of dstPath & " " & quoted form of bakPath & "; fi; " & ¬
+    "mv " & quoted form of tmpPath & " " & quoted form of dstPath & "; " & ¬
+    "rm -rf " & quoted form of bakPath & "; " & ¬
+    "xattr -rd com.apple.quarantine " & quoted form of dstPath & " >> " & quoted form of logPath & " 2>&1 || true"
+  do shell script cmd with administrator privileges
 end run
 APPLESCRIPT
 }
 
-run_admin_xattr() {
-  /usr/bin/osascript <<'APPLESCRIPT' "$TARGET_APP" "$LOG_FILE"
-on run argv
-  set dstPath to item 1 of argv
-  set logPath to item 2 of argv
-  do shell script "xattr -rd com.apple.quarantine " & quoted form of dstPath & " >> " & quoted form of logPath & " 2>&1" with administrator privileges
-end run
-APPLESCRIPT
+replace_app_direct() {
+  rm -rf "$TMP_APP" "$BACKUP_APP" >>"$LOG_FILE" 2>&1 || true
+  /usr/bin/ditto "$APP_SRC" "$TMP_APP" >>"$LOG_FILE" 2>&1
+  if [ ! -x "$TMP_APP/$APP_BIN_REL" ]; then
+    log "tmp app binary missing: $TMP_APP/$APP_BIN_REL"
+    return 1
+  fi
+  xattr -rd com.apple.quarantine "$TMP_APP" >>"$LOG_FILE" 2>&1 || true
+  if [ -d "$TARGET_APP" ]; then
+    mv "$TARGET_APP" "$BACKUP_APP" >>"$LOG_FILE" 2>&1
+  fi
+  if ! mv "$TMP_APP" "$TARGET_APP" >>"$LOG_FILE" 2>&1; then
+    log "move new app failed, trying rollback"
+    rm -rf "$TARGET_APP" >>"$LOG_FILE" 2>&1 || true
+    if [ -d "$BACKUP_APP" ]; then
+      mv "$BACKUP_APP" "$TARGET_APP" >>"$LOG_FILE" 2>&1 || true
+    fi
+    return 1
+  fi
+  rm -rf "$BACKUP_APP" >>"$LOG_FILE" 2>&1 || true
+  xattr -rd com.apple.quarantine "$TARGET_APP" >>"$LOG_FILE" 2>&1 || true
+  return 0
+}
+
+relaunch_app() {
+  if /usr/bin/open -n "$TARGET_APP" >>"$LOG_FILE" 2>&1; then
+    return 0
+  fi
+  log "open -n failed, trying binary launch"
+  "$TARGET_APP/$APP_BIN_REL" >>"$LOG_FILE" 2>&1 &
+  return 0
 }
 
 log "updater started"
@@ -571,21 +805,22 @@ if [ -z "$APP_SRC" ]; then
 fi
 
 log "install target: $TARGET_APP"
-if ! rm -rf "$TARGET_APP" >>"$LOG_FILE" 2>&1 || ! cp -R "$APP_SRC" "$TARGET_APP" >>"$LOG_FILE" 2>&1; then
-  log "direct install failed, trying admin install"
-  run_admin_install >>"$LOG_FILE" 2>&1
+if ! replace_app_direct; then
+  log "direct replace failed, trying admin replace"
+  run_admin_replace >>"$LOG_FILE" 2>&1
 fi
 
-if ! xattr -rd com.apple.quarantine "$TARGET_APP" >>"$LOG_FILE" 2>&1; then
-  log "direct xattr failed, trying admin xattr"
-  run_admin_xattr >>"$LOG_FILE" 2>&1 || true
+if [ ! -x "$TARGET_APP/$APP_BIN_REL" ]; then
+  log "target app binary missing after replace: $TARGET_APP/$APP_BIN_REL"
+  hdiutil detach "$MOUNT_DIR" -quiet >>"$LOG_FILE" 2>&1 || true
+  exit 1
 fi
 
 hdiutil detach "$MOUNT_DIR" -quiet >>"$LOG_FILE" 2>&1 || true
 rm -rf "$MOUNT_DIR" "$DMG" "$STAGED" >>"$LOG_FILE" 2>&1 || true
-open "$TARGET_APP" >>"$LOG_FILE" 2>&1
+relaunch_app
 log "relaunch requested"
-`, pid, dmgPath, targetApp, stagedDir, mountDir, logPath)
+	`, pid, dmgPath, targetApp, stagedDir, mountDir, logPath)
 }
 
 func buildLinuxScript(tarPath, targetExe, stagedDir string, pid int) string {

internal/app/sql_sanitize.go

@@ -7,7 +7,7 @@ import (
 
 func sanitizeSQLForPgLike(dbType string, query string) string {
 	switch strings.ToLower(strings.TrimSpace(dbType)) {
-	case "postgres", "kingbase":
+	case "postgres", "kingbase", "highgo", "vastbase":
 		// 有些情况下会出现多层重复引用（例如 """"schema"""" 或 ""schema"""），单次修复不一定收敛。
 		// 这里做有限次数的迭代，直到输出不再变化。
 		out := query

internal/db/database.go

@@ -40,6 +40,16 @@ func NewDatabase(dbType string) (Database, error) {
 		return &DamengDB{}, nil
 	case "kingbase":
 		return &KingbaseDB{}, nil
+	case "mongodb":
+		return &MongoDB{}, nil
+	case "sqlserver":
+		return &SqlServerDB{}, nil
+	case "highgo":
+		return &HighGoDB{}, nil
+	case "mariadb":
+		return &MariaDB{}, nil
+	case "vastbase":
+		return &VastbaseDB{}, nil
 	case "custom":
 		return &CustomDB{}, nil
 	default:

internal/db/highgo_impl.go

@@ -0,0 +1,628 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"net"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"GoNavi-Wails/internal/connection"
+	"GoNavi-Wails/internal/logger"
+	"GoNavi-Wails/internal/ssh"
+	"GoNavi-Wails/internal/utils"
+
+	_ "github.com/lib/pq" // HighGo is PostgreSQL compatible
+)
+
+// HighGoDB implements Database interface for HighGo (瀚高) database
+// HighGo is a PostgreSQL-compatible database, so we reuse PostgreSQL driver
+type HighGoDB struct {
+	conn        *sql.DB
+	pingTimeout time.Duration
+	forwarder   *ssh.LocalForwarder
+}
+
+func (h *HighGoDB) getDSN(config connection.ConnectionConfig) string {
+	// postgres://user:password@host:port/dbname?sslmode=disable
+	dbname := config.Database
+	if dbname == "" {
+		dbname = "highgo" // HighGo default database
+	}
+
+	u := &url.URL{
+		Scheme: "postgres",
+		Host:   net.JoinHostPort(config.Host, strconv.Itoa(config.Port)),
+		Path:   "/" + dbname,
+	}
+	u.User = url.UserPassword(config.User, config.Password)
+	q := url.Values{}
+	q.Set("sslmode", "disable")
+	q.Set("connect_timeout", strconv.Itoa(getConnectTimeoutSeconds(config)))
+	u.RawQuery = q.Encode()
+
+	return u.String()
+}
+
+func (h *HighGoDB) Connect(config connection.ConnectionConfig) error {
+	var dsn string
+
+	if config.UseSSH {
+		logger.Infof("HighGo 使用 SSH 连接：地址=%s:%d 用户=%s", config.Host, config.Port, config.User)
+
+		forwarder, err := ssh.GetOrCreateLocalForwarder(config.SSH, config.Host, config.Port)
+		if err != nil {
+			return fmt.Errorf("创建 SSH 隧道失败：%w", err)
+		}
+		h.forwarder = forwarder
+
+		host, portStr, err := net.SplitHostPort(forwarder.LocalAddr)
+		if err != nil {
+			return fmt.Errorf("解析本地转发地址失败：%w", err)
+		}
+
+		port, err := strconv.Atoi(portStr)
+		if err != nil {
+			return fmt.Errorf("解析本地端口失败：%w", err)
+		}
+
+		localConfig := config
+		localConfig.Host = host
+		localConfig.Port = port
+		localConfig.UseSSH = false
+
+		dsn = h.getDSN(localConfig)
+		logger.Infof("HighGo 通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, config.Host, config.Port)
+	} else {
+		dsn = h.getDSN(config)
+	}
+
+	db, err := sql.Open("postgres", dsn)
+	if err != nil {
+		return fmt.Errorf("打开数据库连接失败：%w", err)
+	}
+	h.conn = db
+	h.pingTimeout = getConnectTimeout(config)
+
+	if err := h.Ping(); err != nil {
+		return fmt.Errorf("连接建立后验证失败：%w", err)
+	}
+	return nil
+}
+
+func (h *HighGoDB) Close() error {
+	if h.forwarder != nil {
+		if err := h.forwarder.Close(); err != nil {
+			logger.Warnf("关闭 HighGo SSH 端口转发失败：%v", err)
+		}
+		h.forwarder = nil
+	}
+
+	if h.conn != nil {
+		return h.conn.Close()
+	}
+	return nil
+}
+
+func (h *HighGoDB) Ping() error {
+	if h.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+	timeout := h.pingTimeout
+	if timeout <= 0 {
+		timeout = 5 * time.Second
+	}
+	ctx, cancel := utils.ContextWithTimeout(timeout)
+	defer cancel()
+	return h.conn.PingContext(ctx)
+}
+
+func (h *HighGoDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
+	if h.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := h.conn.QueryContext(ctx, query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+
+	return scanRows(rows)
+}
+
+func (h *HighGoDB) Query(query string) ([]map[string]interface{}, []string, error) {
+	if h.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := h.conn.Query(query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+	return scanRows(rows)
+}
+
+func (h *HighGoDB) ExecContext(ctx context.Context, query string) (int64, error) {
+	if h.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := h.conn.ExecContext(ctx, query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (h *HighGoDB) Exec(query string) (int64, error) {
+	if h.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := h.conn.Exec(query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (h *HighGoDB) GetDatabases() ([]string, error) {
+	data, _, err := h.Query("SELECT datname FROM pg_database WHERE datistemplate = false")
+	if err != nil {
+		return nil, err
+	}
+	var dbs []string
+	for _, row := range data {
+		if val, ok := row["datname"]; ok {
+			dbs = append(dbs, fmt.Sprintf("%v", val))
+		}
+	}
+	return dbs, nil
+}
+
+func (h *HighGoDB) GetTables(dbName string) ([]string, error) {
+	query := "SELECT schemaname, tablename FROM pg_catalog.pg_tables WHERE schemaname != 'information_schema' AND schemaname NOT LIKE 'pg_%' ORDER BY schemaname, tablename"
+	data, _, err := h.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var tables []string
+	for _, row := range data {
+		schema, okSchema := row["schemaname"]
+		name, okName := row["tablename"]
+		if okSchema && okName {
+			tables = append(tables, fmt.Sprintf("%v.%v", schema, name))
+			continue
+		}
+		if okName {
+			tables = append(tables, fmt.Sprintf("%v", name))
+		}
+	}
+	return tables, nil
+}
+
+func (h *HighGoDB) GetCreateStatement(dbName, tableName string) (string, error) {
+	return fmt.Sprintf("-- SHOW CREATE TABLE not fully supported for HighGo in this version.\n-- Table: %s", tableName), nil
+}
+
+func (h *HighGoDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT
+	a.attname AS column_name,
+	pg_catalog.format_type(a.atttypid, a.atttypmod) AS data_type,
+	CASE WHEN a.attnotnull THEN 'NO' ELSE 'YES' END AS is_nullable,
+	pg_get_expr(ad.adbin, ad.adrelid) AS column_default,
+	col_description(a.attrelid, a.attnum) AS comment,
+	CASE WHEN pk.attname IS NOT NULL THEN 'PRI' ELSE '' END AS column_key
+FROM pg_class c
+JOIN pg_namespace n ON n.oid = c.relnamespace
+JOIN pg_attribute a ON a.attrelid = c.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid = c.oid AND ad.adnum = a.attnum
+LEFT JOIN (
+	SELECT i.indrelid, a3.attname
+	FROM pg_index i
+	JOIN pg_attribute a3 ON a3.attrelid = i.indrelid AND a3.attnum = ANY(i.indkey)
+	WHERE i.indisprimary
+) pk ON pk.indrelid = c.oid AND pk.attname = a.attname
+WHERE c.relkind IN ('r', 'p')
+  AND n.nspname = '%s'
+  AND c.relname = '%s'
+  AND a.attnum > 0
+  AND NOT a.attisdropped
+ORDER BY a.attnum`, esc(schema), esc(table))
+
+	data, _, err := h.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var columns []connection.ColumnDefinition
+	for _, row := range data {
+		col := connection.ColumnDefinition{
+			Name:     fmt.Sprintf("%v", row["column_name"]),
+			Type:     fmt.Sprintf("%v", row["data_type"]),
+			Nullable: fmt.Sprintf("%v", row["is_nullable"]),
+			Key:      fmt.Sprintf("%v", row["column_key"]),
+			Extra:    "",
+			Comment:  "",
+		}
+
+		if v, ok := row["comment"]; ok && v != nil {
+			col.Comment = fmt.Sprintf("%v", v)
+		}
+
+		if v, ok := row["column_default"]; ok && v != nil {
+			def := fmt.Sprintf("%v", v)
+			col.Default = &def
+			if strings.HasPrefix(strings.ToLower(strings.TrimSpace(def)), "nextval(") {
+				col.Extra = "auto_increment"
+			}
+		}
+
+		columns = append(columns, col)
+	}
+	return columns, nil
+}
+
+func (h *HighGoDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT
+	i.relname AS index_name,
+	a.attname AS column_name,
+	ix.indisunique AS is_unique,
+	x.ordinality AS seq_in_index,
+	am.amname AS index_type
+FROM pg_class t
+JOIN pg_namespace n ON n.oid = t.relnamespace
+JOIN pg_index ix ON t.oid = ix.indrelid
+JOIN pg_class i ON i.oid = ix.indexrelid
+JOIN pg_am am ON i.relam = am.oid
+JOIN unnest(ix.indkey) WITH ORDINALITY AS x(attnum, ordinality) ON TRUE
+JOIN pg_attribute a ON a.attrelid = t.oid AND a.attnum = x.attnum
+WHERE t.relkind IN ('r', 'p')
+  AND t.relname = '%s'
+  AND n.nspname = '%s'
+ORDER BY i.relname, x.ordinality`, esc(table), esc(schema))
+
+	data, _, err := h.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	parseBool := func(v interface{}) bool {
+		switch val := v.(type) {
+		case bool:
+			return val
+		case string:
+			s := strings.ToLower(strings.TrimSpace(val))
+			return s == "t" || s == "true" || s == "1" || s == "y" || s == "yes"
+		default:
+			s := strings.ToLower(strings.TrimSpace(fmt.Sprintf("%v", v)))
+			return s == "t" || s == "true" || s == "1" || s == "y" || s == "yes"
+		}
+	}
+
+	parseInt := func(v interface{}) int {
+		switch val := v.(type) {
+		case int:
+			return val
+		case int64:
+			return int(val)
+		case float64:
+			return int(val)
+		case string:
+			var n int
+			_, _ = fmt.Sscanf(strings.TrimSpace(val), "%d", &n)
+			return n
+		default:
+			var n int
+			_, _ = fmt.Sscanf(strings.TrimSpace(fmt.Sprintf("%v", v)), "%d", &n)
+			return n
+		}
+	}
+
+	var indexes []connection.IndexDefinition
+	for _, row := range data {
+		isUnique := false
+		if v, ok := row["is_unique"]; ok && v != nil {
+			isUnique = parseBool(v)
+		}
+
+		nonUnique := 1
+		if isUnique {
+			nonUnique = 0
+		}
+
+		seq := 0
+		if v, ok := row["seq_in_index"]; ok && v != nil {
+			seq = parseInt(v)
+		}
+
+		indexType := ""
+		if v, ok := row["index_type"]; ok && v != nil {
+			indexType = strings.ToUpper(fmt.Sprintf("%v", v))
+		}
+		if indexType == "" {
+			indexType = "BTREE"
+		}
+
+		idx := connection.IndexDefinition{
+			Name:       fmt.Sprintf("%v", row["index_name"]),
+			ColumnName: fmt.Sprintf("%v", row["column_name"]),
+			NonUnique:  nonUnique,
+			SeqInIndex: seq,
+			IndexType:  indexType,
+		}
+		indexes = append(indexes, idx)
+	}
+	return indexes, nil
+}
+
+func (h *HighGoDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT
+	tc.constraint_name AS constraint_name,
+	kcu.column_name AS column_name,
+	ccu.table_schema AS foreign_table_schema,
+	ccu.table_name AS foreign_table_name,
+	ccu.column_name AS foreign_column_name
+FROM information_schema.table_constraints AS tc
+JOIN information_schema.key_column_usage AS kcu
+  ON tc.constraint_name = kcu.constraint_name
+  AND tc.table_schema = kcu.table_schema
+JOIN information_schema.constraint_column_usage AS ccu
+  ON ccu.constraint_name = tc.constraint_name
+  AND ccu.table_schema = tc.table_schema
+WHERE tc.constraint_type = 'FOREIGN KEY'
+  AND tc.table_name = '%s'
+  AND tc.table_schema = '%s'
+ORDER BY tc.constraint_name, kcu.ordinal_position`, esc(table), esc(schema))
+
+	data, _, err := h.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var fks []connection.ForeignKeyDefinition
+	for _, row := range data {
+		refSchema := ""
+		if v, ok := row["foreign_table_schema"]; ok && v != nil {
+			refSchema = fmt.Sprintf("%v", v)
+		}
+		refTable := fmt.Sprintf("%v", row["foreign_table_name"])
+		refTableName := refTable
+		if strings.TrimSpace(refSchema) != "" {
+			refTableName = fmt.Sprintf("%s.%s", refSchema, refTable)
+		}
+
+		fk := connection.ForeignKeyDefinition{
+			Name:           fmt.Sprintf("%v", row["constraint_name"]),
+			ColumnName:     fmt.Sprintf("%v", row["column_name"]),
+			RefTableName:   refTableName,
+			RefColumnName:  fmt.Sprintf("%v", row["foreign_column_name"]),
+			ConstraintName: fmt.Sprintf("%v", row["constraint_name"]),
+		}
+		fks = append(fks, fk)
+	}
+	return fks, nil
+}
+
+func (h *HighGoDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT trigger_name, action_timing, event_manipulation, action_statement
+FROM information_schema.triggers
+WHERE event_object_table = '%s'
+  AND event_object_schema = '%s'
+ORDER BY trigger_name, event_manipulation`, esc(table), esc(schema))
+
+	data, _, err := h.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var triggers []connection.TriggerDefinition
+	for _, row := range data {
+		trig := connection.TriggerDefinition{
+			Name:      fmt.Sprintf("%v", row["trigger_name"]),
+			Timing:    fmt.Sprintf("%v", row["action_timing"]),
+			Event:     fmt.Sprintf("%v", row["event_manipulation"]),
+			Statement: fmt.Sprintf("%v", row["action_statement"]),
+		}
+		triggers = append(triggers, trig)
+	}
+	return triggers, nil
+}
+
+func (h *HighGoDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
+	query := `
+SELECT table_schema, table_name, column_name, data_type
+FROM information_schema.columns
+WHERE table_schema NOT IN ('pg_catalog', 'information_schema')
+  AND table_schema NOT LIKE 'pg_%'
+ORDER BY table_schema, table_name, ordinal_position`
+
+	data, _, err := h.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var cols []connection.ColumnDefinitionWithTable
+	for _, row := range data {
+		schema := fmt.Sprintf("%v", row["table_schema"])
+		table := fmt.Sprintf("%v", row["table_name"])
+		tableName := table
+		if strings.TrimSpace(schema) != "" {
+			tableName = fmt.Sprintf("%s.%s", schema, table)
+		}
+
+		col := connection.ColumnDefinitionWithTable{
+			TableName: tableName,
+			Name:      fmt.Sprintf("%v", row["column_name"]),
+			Type:      fmt.Sprintf("%v", row["data_type"]),
+		}
+		cols = append(cols, col)
+	}
+	return cols, nil
+}
+
+func (h *HighGoDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
+	if h.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+
+	tx, err := h.conn.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	quoteIdent := func(name string) string {
+		n := strings.TrimSpace(name)
+		n = strings.Trim(n, "\"")
+		n = strings.ReplaceAll(n, "\"", "\"\"")
+		if n == "" {
+			return "\"\""
+		}
+		return `"` + n + `"`
+	}
+
+	schema := ""
+	table := strings.TrimSpace(tableName)
+	if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
+		schema = strings.TrimSpace(parts[0])
+		table = strings.TrimSpace(parts[1])
+	}
+
+	qualifiedTable := ""
+	if schema != "" {
+		qualifiedTable = fmt.Sprintf("%s.%s", quoteIdent(schema), quoteIdent(table))
+	} else {
+		qualifiedTable = quoteIdent(table)
+	}
+
+	// 1. Deletes
+	for _, pk := range changes.Deletes {
+		var wheres []string
+		var args []interface{}
+		idx := 0
+		for k, v := range pk {
+			idx++
+			wheres = append(wheres, fmt.Sprintf("%s = $%d", quoteIdent(k), idx))
+			args = append(args, v)
+		}
+		if len(wheres) == 0 {
+			continue
+		}
+		query := fmt.Sprintf("DELETE FROM %s WHERE %s", qualifiedTable, strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("delete error: %v", err)
+		}
+	}
+
+	// 2. Updates
+	for _, update := range changes.Updates {
+		var sets []string
+		var args []interface{}
+		idx := 0
+
+		for k, v := range update.Values {
+			idx++
+			sets = append(sets, fmt.Sprintf("%s = $%d", quoteIdent(k), idx))
+			args = append(args, v)
+		}
+
+		if len(sets) == 0 {
+			continue
+		}
+
+		var wheres []string
+		for k, v := range update.Keys {
+			idx++
+			wheres = append(wheres, fmt.Sprintf("%s = $%d", quoteIdent(k), idx))
+			args = append(args, v)
+		}
+
+		if len(wheres) == 0 {
+			return fmt.Errorf("update requires keys")
+		}
+
+		query := fmt.Sprintf("UPDATE %s SET %s WHERE %s", qualifiedTable, strings.Join(sets, ", "), strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("update error: %v", err)
+		}
+	}
+
+	// 3. Inserts
+	for _, row := range changes.Inserts {
+		var cols []string
+		var placeholders []string
+		var args []interface{}
+		idx := 0
+
+		for k, v := range row {
+			idx++
+			cols = append(cols, quoteIdent(k))
+			placeholders = append(placeholders, fmt.Sprintf("$%d", idx))
+			args = append(args, v)
+		}
+
+		if len(cols) == 0 {
+			continue
+		}
+
+		query := fmt.Sprintf("INSERT INTO %s (%s) VALUES (%s)", qualifiedTable, strings.Join(cols, ", "), strings.Join(placeholders, ", "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("insert error: %v", err)
+		}
+	}
+
+	return tx.Commit()
+}

internal/db/mariadb_impl.go

@@ -0,0 +1,409 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"strings"
+	"time"
+
+	"GoNavi-Wails/internal/connection"
+	"GoNavi-Wails/internal/logger"
+	"GoNavi-Wails/internal/ssh"
+	"GoNavi-Wails/internal/utils"
+
+	_ "github.com/go-sql-driver/mysql"
+)
+
+// MariaDB implements Database interface for MariaDB
+// MariaDB is MySQL-compatible, so we reuse the MySQL driver
+type MariaDB struct {
+	conn        *sql.DB
+	pingTimeout time.Duration
+}
+
+func (m *MariaDB) getDSN(config connection.ConnectionConfig) string {
+	database := config.Database
+	protocol := "tcp"
+	address := fmt.Sprintf("%s:%d", config.Host, config.Port)
+
+	if config.UseSSH {
+		netName, err := ssh.RegisterSSHNetwork(config.SSH)
+		if err == nil {
+			protocol = netName
+			address = fmt.Sprintf("%s:%d", config.Host, config.Port)
+		} else {
+			logger.Warnf("注册 SSH 网络失败，将尝试直连：地址=%s:%d 用户=%s，原因：%v", config.Host, config.Port, config.User, err)
+		}
+	}
+
+	timeout := getConnectTimeoutSeconds(config)
+
+	return fmt.Sprintf("%s:%s@%s(%s)/%s?charset=utf8mb4&parseTime=True&loc=Local&timeout=%ds",
+		config.User, config.Password, protocol, address, database, timeout)
+}
+
+func (m *MariaDB) Connect(config connection.ConnectionConfig) error {
+	dsn := m.getDSN(config)
+	db, err := sql.Open("mysql", dsn)
+	if err != nil {
+		return fmt.Errorf("打开数据库连接失败：%w", err)
+	}
+	m.conn = db
+	m.pingTimeout = getConnectTimeout(config)
+
+	if err := m.Ping(); err != nil {
+		return fmt.Errorf("连接建立后验证失败：%w", err)
+	}
+	return nil
+}
+
+func (m *MariaDB) Close() error {
+	if m.conn != nil {
+		return m.conn.Close()
+	}
+	return nil
+}
+
+func (m *MariaDB) Ping() error {
+	if m.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+	timeout := m.pingTimeout
+	if timeout <= 0 {
+		timeout = 5 * time.Second
+	}
+	ctx, cancel := utils.ContextWithTimeout(timeout)
+	defer cancel()
+	return m.conn.PingContext(ctx)
+}
+
+func (m *MariaDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
+	if m.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := m.conn.QueryContext(ctx, query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+
+	return scanRows(rows)
+}
+
+func (m *MariaDB) Query(query string) ([]map[string]interface{}, []string, error) {
+	if m.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := m.conn.Query(query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+	return scanRows(rows)
+}
+
+func (m *MariaDB) ExecContext(ctx context.Context, query string) (int64, error) {
+	if m.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := m.conn.ExecContext(ctx, query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (m *MariaDB) Exec(query string) (int64, error) {
+	if m.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := m.conn.Exec(query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (m *MariaDB) GetDatabases() ([]string, error) {
+	data, _, err := m.Query("SHOW DATABASES")
+	if err != nil {
+		return nil, err
+	}
+	var dbs []string
+	for _, row := range data {
+		if val, ok := row["Database"]; ok {
+			dbs = append(dbs, fmt.Sprintf("%v", val))
+		} else if val, ok := row["database"]; ok {
+			dbs = append(dbs, fmt.Sprintf("%v", val))
+		}
+	}
+	return dbs, nil
+}
+
+func (m *MariaDB) GetTables(dbName string) ([]string, error) {
+	query := "SHOW TABLES"
+	if dbName != "" {
+		query = fmt.Sprintf("SHOW TABLES FROM `%s`", dbName)
+	}
+
+	data, _, err := m.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var tables []string
+	for _, row := range data {
+		for _, v := range row {
+			tables = append(tables, fmt.Sprintf("%v", v))
+			break
+		}
+	}
+	return tables, nil
+}
+
+func (m *MariaDB) GetCreateStatement(dbName, tableName string) (string, error) {
+	query := fmt.Sprintf("SHOW CREATE TABLE `%s`.`%s`", dbName, tableName)
+	if dbName == "" {
+		query = fmt.Sprintf("SHOW CREATE TABLE `%s`", tableName)
+	}
+
+	data, _, err := m.Query(query)
+	if err != nil {
+		return "", err
+	}
+
+	if len(data) > 0 {
+		if val, ok := data[0]["Create Table"]; ok {
+			return fmt.Sprintf("%v", val), nil
+		}
+	}
+	return "", fmt.Errorf("create statement not found")
+}
+
+func (m *MariaDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
+	query := fmt.Sprintf("SHOW FULL COLUMNS FROM `%s`.`%s`", dbName, tableName)
+	if dbName == "" {
+		query = fmt.Sprintf("SHOW FULL COLUMNS FROM `%s`", tableName)
+	}
+
+	data, _, err := m.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var columns []connection.ColumnDefinition
+	for _, row := range data {
+		col := connection.ColumnDefinition{
+			Name:     fmt.Sprintf("%v", row["Field"]),
+			Type:     fmt.Sprintf("%v", row["Type"]),
+			Nullable: fmt.Sprintf("%v", row["Null"]),
+			Key:      fmt.Sprintf("%v", row["Key"]),
+			Extra:    fmt.Sprintf("%v", row["Extra"]),
+			Comment:  fmt.Sprintf("%v", row["Comment"]),
+		}
+
+		if row["Default"] != nil {
+			d := fmt.Sprintf("%v", row["Default"])
+			col.Default = &d
+		}
+
+		columns = append(columns, col)
+	}
+	return columns, nil
+}
+
+func (m *MariaDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
+	query := fmt.Sprintf("SHOW INDEX FROM `%s`.`%s`", dbName, tableName)
+	if dbName == "" {
+		query = fmt.Sprintf("SHOW INDEX FROM `%s`", tableName)
+	}
+
+	data, _, err := m.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var indexes []connection.IndexDefinition
+	for _, row := range data {
+		nonUnique := 0
+		if val, ok := row["Non_unique"]; ok {
+			if f, ok := val.(float64); ok {
+				nonUnique = int(f)
+			} else if i, ok := val.(int64); ok {
+				nonUnique = int(i)
+			}
+		}
+
+		seq := 0
+		if val, ok := row["Seq_in_index"]; ok {
+			if f, ok := val.(float64); ok {
+				seq = int(f)
+			} else if i, ok := val.(int64); ok {
+				seq = int(i)
+			}
+		}
+
+		idx := connection.IndexDefinition{
+			Name:       fmt.Sprintf("%v", row["Key_name"]),
+			ColumnName: fmt.Sprintf("%v", row["Column_name"]),
+			NonUnique:  nonUnique,
+			SeqInIndex: seq,
+			IndexType:  fmt.Sprintf("%v", row["Index_type"]),
+		}
+		indexes = append(indexes, idx)
+	}
+	return indexes, nil
+}
+
+func (m *MariaDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
+	query := fmt.Sprintf(`SELECT CONSTRAINT_NAME, COLUMN_NAME, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME
+              FROM information_schema.KEY_COLUMN_USAGE
+              WHERE TABLE_SCHEMA = '%s' AND TABLE_NAME = '%s' AND REFERENCED_TABLE_NAME IS NOT NULL`, dbName, tableName)
+
+	data, _, err := m.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var fks []connection.ForeignKeyDefinition
+	for _, row := range data {
+		fk := connection.ForeignKeyDefinition{
+			Name:           fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
+			ColumnName:     fmt.Sprintf("%v", row["COLUMN_NAME"]),
+			RefTableName:   fmt.Sprintf("%v", row["REFERENCED_TABLE_NAME"]),
+			RefColumnName:  fmt.Sprintf("%v", row["REFERENCED_COLUMN_NAME"]),
+			ConstraintName: fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
+		}
+		fks = append(fks, fk)
+	}
+	return fks, nil
+}
+
+func (m *MariaDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
+	query := fmt.Sprintf("SHOW TRIGGERS FROM `%s` WHERE `Table` = '%s'", dbName, tableName)
+	data, _, err := m.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var triggers []connection.TriggerDefinition
+	for _, row := range data {
+		trig := connection.TriggerDefinition{
+			Name:      fmt.Sprintf("%v", row["Trigger"]),
+			Timing:    fmt.Sprintf("%v", row["Timing"]),
+			Event:     fmt.Sprintf("%v", row["Event"]),
+			Statement: fmt.Sprintf("%v", row["Statement"]),
+		}
+		triggers = append(triggers, trig)
+	}
+	return triggers, nil
+}
+
+func (m *MariaDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
+	if m.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+
+	tx, err := m.conn.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	// 1. Deletes
+	for _, pk := range changes.Deletes {
+		var wheres []string
+		var args []interface{}
+		for k, v := range pk {
+			wheres = append(wheres, fmt.Sprintf("`%s` = ?", k))
+			args = append(args, normalizeMySQLDateTimeValue(v))
+		}
+		if len(wheres) == 0 {
+			continue
+		}
+		query := fmt.Sprintf("DELETE FROM `%s` WHERE %s", tableName, strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("delete error: %v", err)
+		}
+	}
+
+	// 2. Updates
+	for _, update := range changes.Updates {
+		var sets []string
+		var args []interface{}
+
+		for k, v := range update.Values {
+			sets = append(sets, fmt.Sprintf("`%s` = ?", k))
+			args = append(args, normalizeMySQLDateTimeValue(v))
+		}
+
+		if len(sets) == 0 {
+			continue
+		}
+
+		var wheres []string
+		for k, v := range update.Keys {
+			wheres = append(wheres, fmt.Sprintf("`%s` = ?", k))
+			args = append(args, normalizeMySQLDateTimeValue(v))
+		}
+
+		if len(wheres) == 0 {
+			return fmt.Errorf("update requires keys")
+		}
+
+		query := fmt.Sprintf("UPDATE `%s` SET %s WHERE %s", tableName, strings.Join(sets, ", "), strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("update error: %v", err)
+		}
+	}
+
+	// 3. Inserts
+	for _, row := range changes.Inserts {
+		var cols []string
+		var placeholders []string
+		var args []interface{}
+
+		for k, v := range row {
+			cols = append(cols, fmt.Sprintf("`%s`", k))
+			placeholders = append(placeholders, "?")
+			args = append(args, normalizeMySQLDateTimeValue(v))
+		}
+
+		if len(cols) == 0 {
+			continue
+		}
+
+		query := fmt.Sprintf("INSERT INTO `%s` (%s) VALUES (%s)", tableName, strings.Join(cols, ", "), strings.Join(placeholders, ", "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("insert error: %v", err)
+		}
+	}
+
+	return tx.Commit()
+}
+
+func (m *MariaDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
+	query := fmt.Sprintf("SELECT TABLE_NAME, COLUMN_NAME, COLUMN_TYPE FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = '%s'", dbName)
+	if dbName == "" {
+		return nil, fmt.Errorf("database name required for GetAllColumns")
+	}
+
+	data, _, err := m.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var cols []connection.ColumnDefinitionWithTable
+	for _, row := range data {
+		col := connection.ColumnDefinitionWithTable{
+			TableName: fmt.Sprintf("%v", row["TABLE_NAME"]),
+			Name:      fmt.Sprintf("%v", row["COLUMN_NAME"]),
+			Type:      fmt.Sprintf("%v", row["COLUMN_TYPE"]),
+		}
+		cols = append(cols, col)
+	}
+	return cols, nil
+}

internal/db/mongodb_impl.go

@@ -0,0 +1,407 @@
+package db
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"GoNavi-Wails/internal/connection"
+	"GoNavi-Wails/internal/logger"
+	"GoNavi-Wails/internal/ssh"
+
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+	"go.mongodb.org/mongo-driver/v2/mongo/options"
+	"go.mongodb.org/mongo-driver/v2/mongo/readpref"
+)
+
+type MongoDB struct {
+	client      *mongo.Client
+	database    string
+	pingTimeout time.Duration
+	forwarder   *ssh.LocalForwarder
+}
+
+func (m *MongoDB) getURI(config connection.ConnectionConfig) string {
+	// mongodb://user:password@host:port/database?authSource=admin
+	host := config.Host
+	port := config.Port
+	if port == 0 {
+		port = 27017
+	}
+
+	uri := fmt.Sprintf("mongodb://%s:%d", host, port)
+
+	if config.User != "" {
+		encodedUser := url.QueryEscape(config.User)
+		if config.Password != "" {
+			encodedPass := url.QueryEscape(config.Password)
+			uri = fmt.Sprintf("mongodb://%s:%s@%s:%d", encodedUser, encodedPass, host, port)
+		} else {
+			uri = fmt.Sprintf("mongodb://%s@%s:%d", encodedUser, host, port)
+		}
+	}
+
+	// Add connection options
+	params := []string{}
+	timeout := getConnectTimeoutSeconds(config)
+	params = append(params, fmt.Sprintf("connectTimeoutMS=%d", timeout*1000))
+	params = append(params, fmt.Sprintf("serverSelectionTimeoutMS=%d", timeout*1000))
+
+	// authSource: 优先使用 config.Database，为空时默认 admin
+	authSource := "admin"
+	if config.Database != "" {
+		authSource = config.Database
+	}
+	params = append(params, fmt.Sprintf("authSource=%s", authSource))
+
+	if len(params) > 0 {
+		uri = uri + "/?" + strings.Join(params, "&")
+	}
+
+	return uri
+}
+
+func (m *MongoDB) Connect(config connection.ConnectionConfig) error {
+	var uri string
+
+	if config.UseSSH {
+		logger.Infof("MongoDB 使用 SSH 连接：地址=%s:%d", config.Host, config.Port)
+
+		forwarder, err := ssh.GetOrCreateLocalForwarder(config.SSH, config.Host, config.Port)
+		if err != nil {
+			return fmt.Errorf("创建 SSH 隧道失败：%w", err)
+		}
+		m.forwarder = forwarder
+
+		host, portStr, err := net.SplitHostPort(forwarder.LocalAddr)
+		if err != nil {
+			return fmt.Errorf("解析本地转发地址失败：%w", err)
+		}
+
+		port, err := strconv.Atoi(portStr)
+		if err != nil {
+			return fmt.Errorf("解析本地端口失败：%w", err)
+		}
+
+		localConfig := config
+		localConfig.Host = host
+		localConfig.Port = port
+		localConfig.UseSSH = false
+
+		uri = m.getURI(localConfig)
+		logger.Infof("MongoDB 通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, config.Host, config.Port)
+	} else {
+		uri = m.getURI(config)
+	}
+
+	m.pingTimeout = getConnectTimeout(config)
+	m.database = config.Database
+	if m.database == "" {
+		m.database = "admin"
+	}
+
+	clientOpts := options.Client().ApplyURI(uri)
+	client, err := mongo.Connect(clientOpts)
+	if err != nil {
+		return fmt.Errorf("MongoDB 连接失败：%w", err)
+	}
+	m.client = client
+
+	if err := m.Ping(); err != nil {
+		return fmt.Errorf("MongoDB 连接验证失败：%w", err)
+	}
+
+	return nil
+}
+
+func (m *MongoDB) Close() error {
+	if m.forwarder != nil {
+		if err := m.forwarder.Close(); err != nil {
+			logger.Warnf("关闭 MongoDB SSH 端口转发失败：%v", err)
+		}
+		m.forwarder = nil
+	}
+
+	if m.client != nil {
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		return m.client.Disconnect(ctx)
+	}
+	return nil
+}
+
+func (m *MongoDB) Ping() error {
+	if m.client == nil {
+		return fmt.Errorf("connection not open")
+	}
+	timeout := m.pingTimeout
+	if timeout <= 0 {
+		timeout = 5 * time.Second
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	return m.client.Ping(ctx, readpref.Primary())
+}
+
+// Query executes a MongoDB command and returns results
+// Supports JSON format commands like: {"find": "collection", "filter": {}}
+func (m *MongoDB) Query(query string) ([]map[string]interface{}, []string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+	return m.queryWithContext(ctx, query)
+}
+
+// QueryContext executes a MongoDB command with the given context for timeout control
+func (m *MongoDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
+	return m.queryWithContext(ctx, query)
+}
+
+func (m *MongoDB) queryWithContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
+	if m.client == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	query = strings.TrimSpace(query)
+	if query == "" {
+		return nil, nil, fmt.Errorf("empty query")
+	}
+
+	// Parse JSON command
+	var cmd bson.D
+	if err := bson.UnmarshalExtJSON([]byte(query), true, &cmd); err != nil {
+		return nil, nil, fmt.Errorf("invalid JSON command: %w", err)
+	}
+
+	db := m.client.Database(m.database)
+	var result bson.M
+	if err := db.RunCommand(ctx, cmd).Decode(&result); err != nil {
+		return nil, nil, err
+	}
+
+	// Convert result to standard format
+	data := []map[string]interface{}{{"result": result}}
+	columns := []string{"result"}
+
+	// If result contains cursor with documents, extract them
+	if cursor, ok := result["cursor"].(bson.M); ok {
+		if batch, ok := cursor["firstBatch"].(bson.A); ok {
+			data = make([]map[string]interface{}, 0, len(batch))
+			columnSet := make(map[string]bool)
+			for _, doc := range batch {
+				if docMap, ok := doc.(bson.M); ok {
+					row := make(map[string]interface{})
+					for k, v := range docMap {
+						row[k] = v
+						columnSet[k] = true
+					}
+					data = append(data, row)
+				}
+			}
+			columns = make([]string, 0, len(columnSet))
+			for k := range columnSet {
+				columns = append(columns, k)
+			}
+		}
+	}
+
+	return data, columns, nil
+}
+
+func (m *MongoDB) Exec(query string) (int64, error) {
+	_, _, err := m.Query(query)
+	if err != nil {
+		return 0, err
+	}
+	return 1, nil
+}
+
+// ExecContext executes a MongoDB command with the given context for timeout control
+func (m *MongoDB) ExecContext(ctx context.Context, query string) (int64, error) {
+	_, _, err := m.QueryContext(ctx, query)
+	if err != nil {
+		return 0, err
+	}
+	return 1, nil
+}
+
+func (m *MongoDB) GetDatabases() ([]string, error) {
+	if m.client == nil {
+		return nil, fmt.Errorf("connection not open")
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	dbs, err := m.client.ListDatabaseNames(ctx, bson.M{})
+	if err != nil {
+		return nil, err
+	}
+	return dbs, nil
+}
+
+func (m *MongoDB) GetTables(dbName string) ([]string, error) {
+	if m.client == nil {
+		return nil, fmt.Errorf("connection not open")
+	}
+
+	targetDB := dbName
+	if targetDB == "" {
+		targetDB = m.database
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	collections, err := m.client.Database(targetDB).ListCollectionNames(ctx, bson.M{})
+	if err != nil {
+		return nil, err
+	}
+	return collections, nil
+}
+
+func (m *MongoDB) GetCreateStatement(dbName, tableName string) (string, error) {
+	return fmt.Sprintf("// MongoDB collection: %s.%s\n// MongoDB is schemaless - no CREATE statement available", dbName, tableName), nil
+}
+
+// GetColumns returns empty for MongoDB (schemaless)
+func (m *MongoDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
+	// MongoDB is schemaless, return empty
+	return []connection.ColumnDefinition{}, nil
+}
+
+// GetAllColumns returns empty for MongoDB (schemaless)
+func (m *MongoDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
+	return []connection.ColumnDefinitionWithTable{}, nil
+}
+
+// GetIndexes returns indexes for a MongoDB collection
+func (m *MongoDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
+	if m.client == nil {
+		return nil, fmt.Errorf("connection not open")
+	}
+
+	targetDB := dbName
+	if targetDB == "" {
+		targetDB = m.database
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	collection := m.client.Database(targetDB).Collection(tableName)
+	cursor, err := collection.Indexes().List(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	var indexes []connection.IndexDefinition
+	for cursor.Next(ctx) {
+		var idx bson.M
+		if err := cursor.Decode(&idx); err != nil {
+			continue
+		}
+
+		name := fmt.Sprintf("%v", idx["name"])
+		unique := false
+		if u, ok := idx["unique"].(bool); ok {
+			unique = u
+		}
+
+		// Extract key fields
+		if key, ok := idx["key"].(bson.M); ok {
+			seq := 1
+			for field := range key {
+				nonUnique := 1
+				if unique {
+					nonUnique = 0
+				}
+				indexes = append(indexes, connection.IndexDefinition{
+					Name:       name,
+					ColumnName: field,
+					NonUnique:  nonUnique,
+					SeqInIndex: seq,
+					IndexType:  "BTREE",
+				})
+				seq++
+			}
+		}
+	}
+
+	return indexes, nil
+}
+
+func (m *MongoDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
+	// MongoDB doesn't have foreign keys
+	return []connection.ForeignKeyDefinition{}, nil
+}
+
+func (m *MongoDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
+	// MongoDB doesn't have triggers in the traditional sense
+	return []connection.TriggerDefinition{}, nil
+}
+
+// ApplyChanges implements batch changes for MongoDB
+func (m *MongoDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
+	if m.client == nil {
+		return fmt.Errorf("connection not open")
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	collection := m.client.Database(m.database).Collection(tableName)
+
+	// Process deletes
+	for _, pk := range changes.Deletes {
+		filter := bson.M{}
+		for k, v := range pk {
+			filter[k] = v
+		}
+		if len(filter) > 0 {
+			if _, err := collection.DeleteOne(ctx, filter); err != nil {
+				return fmt.Errorf("delete error: %v", err)
+			}
+		}
+	}
+
+	// Process updates
+	for _, update := range changes.Updates {
+		filter := bson.M{}
+		for k, v := range update.Keys {
+			filter[k] = v
+		}
+		if len(filter) == 0 {
+			return fmt.Errorf("update requires keys")
+		}
+
+		updateDoc := bson.M{"$set": bson.M{}}
+		for k, v := range update.Values {
+			updateDoc["$set"].(bson.M)[k] = v
+		}
+
+		if _, err := collection.UpdateOne(ctx, filter, updateDoc); err != nil {
+			return fmt.Errorf("update error: %v", err)
+		}
+	}
+
+	// Process inserts
+	for _, row := range changes.Inserts {
+		doc := bson.M{}
+		for k, v := range row {
+			doc[k] = v
+		}
+		if len(doc) > 0 {
+			if _, err := collection.InsertOne(ctx, doc); err != nil {
+				return fmt.Errorf("insert error: %v", err)
+			}
+		}
+	}
+
+	return nil
+}

internal/db/sqlserver_impl.go

@@ -0,0 +1,635 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"net"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"GoNavi-Wails/internal/connection"
+	"GoNavi-Wails/internal/logger"
+	"GoNavi-Wails/internal/ssh"
+	"GoNavi-Wails/internal/utils"
+
+	_ "github.com/microsoft/go-mssqldb"
+)
+
+type SqlServerDB struct {
+	conn        *sql.DB
+	pingTimeout time.Duration
+	forwarder   *ssh.LocalForwarder
+}
+
+// quoteBracket escapes ] in identifiers for safe use in SQL Server [bracket] notation
+func quoteBracket(name string) string {
+	return strings.ReplaceAll(name, "]", "]]")
+}
+
+func (s *SqlServerDB) getDSN(config connection.ConnectionConfig) string {
+	// sqlserver://user:password@host:port?database=dbname
+	dbname := config.Database
+	if dbname == "" {
+		dbname = "master"
+	}
+
+	u := &url.URL{
+		Scheme: "sqlserver",
+		Host:   net.JoinHostPort(config.Host, strconv.Itoa(config.Port)),
+	}
+	u.User = url.UserPassword(config.User, config.Password)
+
+	q := url.Values{}
+	q.Set("database", dbname)
+	q.Set("connection timeout", strconv.Itoa(getConnectTimeoutSeconds(config)))
+	q.Set("encrypt", "disable")
+	q.Set("TrustServerCertificate", "true")
+	u.RawQuery = q.Encode()
+
+	return u.String()
+}
+
+func (s *SqlServerDB) Connect(config connection.ConnectionConfig) error {
+	var dsn string
+
+	if config.UseSSH {
+		logger.Infof("SQL Server 使用 SSH 连接：地址=%s:%d 用户=%s", config.Host, config.Port, config.User)
+
+		forwarder, err := ssh.GetOrCreateLocalForwarder(config.SSH, config.Host, config.Port)
+		if err != nil {
+			return fmt.Errorf("创建 SSH 隧道失败：%w", err)
+		}
+		s.forwarder = forwarder
+
+		host, portStr, err := net.SplitHostPort(forwarder.LocalAddr)
+		if err != nil {
+			return fmt.Errorf("解析本地转发地址失败：%w", err)
+		}
+
+		port, err := strconv.Atoi(portStr)
+		if err != nil {
+			return fmt.Errorf("解析本地端口失败：%w", err)
+		}
+
+		localConfig := config
+		localConfig.Host = host
+		localConfig.Port = port
+		localConfig.UseSSH = false
+
+		dsn = s.getDSN(localConfig)
+		logger.Infof("SQL Server 通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, config.Host, config.Port)
+	} else {
+		dsn = s.getDSN(config)
+	}
+
+	db, err := sql.Open("sqlserver", dsn)
+	if err != nil {
+		return fmt.Errorf("打开数据库连接失败：%w", err)
+	}
+	s.conn = db
+	s.pingTimeout = getConnectTimeout(config)
+
+	if err := s.Ping(); err != nil {
+		return fmt.Errorf("连接建立后验证失败：%w", err)
+	}
+	return nil
+}
+
+func (s *SqlServerDB) Close() error {
+	if s.forwarder != nil {
+		if err := s.forwarder.Close(); err != nil {
+			logger.Warnf("关闭 SQL Server SSH 端口转发失败：%v", err)
+		}
+		s.forwarder = nil
+	}
+
+	if s.conn != nil {
+		return s.conn.Close()
+	}
+	return nil
+}
+
+func (s *SqlServerDB) Ping() error {
+	if s.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+	timeout := s.pingTimeout
+	if timeout <= 0 {
+		timeout = 5 * time.Second
+	}
+	ctx, cancel := utils.ContextWithTimeout(timeout)
+	defer cancel()
+	return s.conn.PingContext(ctx)
+}
+
+func (s *SqlServerDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
+	if s.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := s.conn.QueryContext(ctx, query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+
+	return scanRows(rows)
+}
+
+func (s *SqlServerDB) Query(query string) ([]map[string]interface{}, []string, error) {
+	if s.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := s.conn.Query(query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+	return scanRows(rows)
+}
+
+func (s *SqlServerDB) ExecContext(ctx context.Context, query string) (int64, error) {
+	if s.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := s.conn.ExecContext(ctx, query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (s *SqlServerDB) Exec(query string) (int64, error) {
+	if s.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := s.conn.Exec(query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (s *SqlServerDB) GetDatabases() ([]string, error) {
+	query := "SELECT name FROM sys.databases WHERE state_desc = 'ONLINE' ORDER BY name"
+	data, _, err := s.Query(query)
+	if err != nil {
+		return nil, err
+	}
+	var dbs []string
+	for _, row := range data {
+		if val, ok := row["name"]; ok {
+			dbs = append(dbs, fmt.Sprintf("%v", val))
+		}
+	}
+	return dbs, nil
+}
+
+func (s *SqlServerDB) GetTables(dbName string) ([]string, error) {
+	// SQL Server uses schema.table format, default schema is dbo
+	safeDB := quoteBracket(dbName)
+	query := fmt.Sprintf(`
+SELECT s.name AS schema_name, t.name AS table_name
+FROM [%s].sys.tables t
+JOIN [%s].sys.schemas s ON t.schema_id = s.schema_id
+WHERE t.type = 'U'
+ORDER BY s.name, t.name`, safeDB, safeDB)
+
+	data, _, err := s.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var tables []string
+	for _, row := range data {
+		schema, okSchema := row["schema_name"]
+		name, okName := row["table_name"]
+		if okSchema && okName {
+			tables = append(tables, fmt.Sprintf("%v.%v", schema, name))
+			continue
+		}
+		if okName {
+			tables = append(tables, fmt.Sprintf("%v", name))
+		}
+	}
+	return tables, nil
+}
+
+func (s *SqlServerDB) GetCreateStatement(dbName, tableName string) (string, error) {
+	return fmt.Sprintf("-- SHOW CREATE TABLE not supported for SQL Server in this version.\n-- Table: %s.%s", dbName, tableName), nil
+}
+
+func (s *SqlServerDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
+	schema := "dbo"
+	table := strings.TrimSpace(tableName)
+
+	if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
+		schema = strings.TrimSpace(parts[0])
+		table = strings.TrimSpace(parts[1])
+	}
+
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+	safeDB := quoteBracket(dbName)
+
+	query := fmt.Sprintf(`
+SELECT
+    c.name AS column_name,
+    t.name + CASE
+        WHEN t.name IN ('varchar', 'nvarchar', 'char', 'nchar') THEN '(' + CASE WHEN c.max_length = -1 THEN 'MAX' ELSE CAST(CASE WHEN t.name IN ('nvarchar', 'nchar') THEN c.max_length / 2 ELSE c.max_length END AS VARCHAR) END + ')'
+        WHEN t.name IN ('decimal', 'numeric') THEN '(' + CAST(c.precision AS VARCHAR) + ',' + CAST(c.scale AS VARCHAR) + ')'
+        ELSE ''
+    END AS data_type,
+    CASE WHEN c.is_nullable = 1 THEN 'YES' ELSE 'NO' END AS is_nullable,
+    dc.definition AS column_default,
+    ep.value AS comment,
+    CASE WHEN pk.column_id IS NOT NULL THEN 'PRI' ELSE '' END AS column_key,
+    CASE WHEN c.is_identity = 1 THEN 'auto_increment' ELSE '' END AS extra
+FROM [%s].sys.columns c
+JOIN [%s].sys.types t ON c.user_type_id = t.user_type_id
+JOIN [%s].sys.tables tb ON c.object_id = tb.object_id
+JOIN [%s].sys.schemas s ON tb.schema_id = s.schema_id
+LEFT JOIN [%s].sys.default_constraints dc ON c.default_object_id = dc.object_id
+LEFT JOIN [%s].sys.extended_properties ep ON ep.major_id = c.object_id AND ep.minor_id = c.column_id AND ep.name = 'MS_Description'
+LEFT JOIN (
+    SELECT ic.object_id, ic.column_id
+    FROM [%s].sys.index_columns ic
+    JOIN [%s].sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
+    WHERE i.is_primary_key = 1
+) pk ON pk.object_id = c.object_id AND pk.column_id = c.column_id
+WHERE s.name = '%s' AND tb.name = '%s'
+ORDER BY c.column_id`,
+		safeDB, safeDB, safeDB, safeDB, safeDB, safeDB, safeDB, safeDB,
+		esc(schema), esc(table))
+
+	data, _, err := s.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var columns []connection.ColumnDefinition
+	for _, row := range data {
+		col := connection.ColumnDefinition{
+			Name:     fmt.Sprintf("%v", row["column_name"]),
+			Type:     fmt.Sprintf("%v", row["data_type"]),
+			Nullable: fmt.Sprintf("%v", row["is_nullable"]),
+			Key:      fmt.Sprintf("%v", row["column_key"]),
+			Extra:    fmt.Sprintf("%v", row["extra"]),
+			Comment:  "",
+		}
+
+		if v, ok := row["comment"]; ok && v != nil {
+			col.Comment = fmt.Sprintf("%v", v)
+		}
+
+		if v, ok := row["column_default"]; ok && v != nil {
+			def := fmt.Sprintf("%v", v)
+			col.Default = &def
+		}
+
+		columns = append(columns, col)
+	}
+	return columns, nil
+}
+
+func (s *SqlServerDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
+	safeDB := quoteBracket(dbName)
+	query := fmt.Sprintf(`
+SELECT s.name AS schema_name, t.name AS table_name, c.name AS column_name, tp.name AS data_type
+FROM [%s].sys.columns c
+JOIN [%s].sys.tables t ON c.object_id = t.object_id
+JOIN [%s].sys.schemas s ON t.schema_id = s.schema_id
+JOIN [%s].sys.types tp ON c.user_type_id = tp.user_type_id
+WHERE t.type = 'U'
+ORDER BY s.name, t.name, c.column_id`, safeDB, safeDB, safeDB, safeDB)
+
+	data, _, err := s.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var cols []connection.ColumnDefinitionWithTable
+	for _, row := range data {
+		schema := fmt.Sprintf("%v", row["schema_name"])
+		table := fmt.Sprintf("%v", row["table_name"])
+		tableName := fmt.Sprintf("%s.%s", schema, table)
+
+		col := connection.ColumnDefinitionWithTable{
+			TableName: tableName,
+			Name:      fmt.Sprintf("%v", row["column_name"]),
+			Type:      fmt.Sprintf("%v", row["data_type"]),
+		}
+		cols = append(cols, col)
+	}
+	return cols, nil
+}
+
+func (s *SqlServerDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
+	schema := "dbo"
+	table := strings.TrimSpace(tableName)
+
+	if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
+		schema = strings.TrimSpace(parts[0])
+		table = strings.TrimSpace(parts[1])
+	}
+
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+	safeDB := quoteBracket(dbName)
+
+	query := fmt.Sprintf(`
+SELECT
+    i.name AS index_name,
+    c.name AS column_name,
+    i.is_unique,
+    ic.key_ordinal AS seq_in_index,
+    i.type_desc AS index_type
+FROM [%s].sys.indexes i
+JOIN [%s].sys.index_columns ic ON i.object_id = ic.object_id AND i.index_id = ic.index_id
+JOIN [%s].sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
+JOIN [%s].sys.tables t ON i.object_id = t.object_id
+JOIN [%s].sys.schemas s ON t.schema_id = s.schema_id
+WHERE s.name = '%s' AND t.name = '%s' AND i.name IS NOT NULL
+ORDER BY i.name, ic.key_ordinal`,
+		safeDB, safeDB, safeDB, safeDB, safeDB, esc(schema), esc(table))
+
+	data, _, err := s.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var indexes []connection.IndexDefinition
+	for _, row := range data {
+		isUnique := false
+		if v, ok := row["is_unique"]; ok && v != nil {
+			switch val := v.(type) {
+			case bool:
+				isUnique = val
+			case int64:
+				isUnique = val == 1
+			}
+		}
+
+		nonUnique := 1
+		if isUnique {
+			nonUnique = 0
+		}
+
+		seq := 0
+		if v, ok := row["seq_in_index"]; ok && v != nil {
+			switch val := v.(type) {
+			case int:
+				seq = val
+			case int64:
+				seq = int(val)
+			}
+		}
+
+		indexType := "NONCLUSTERED"
+		if v, ok := row["index_type"]; ok && v != nil {
+			indexType = strings.ToUpper(fmt.Sprintf("%v", v))
+		}
+
+		idx := connection.IndexDefinition{
+			Name:       fmt.Sprintf("%v", row["index_name"]),
+			ColumnName: fmt.Sprintf("%v", row["column_name"]),
+			NonUnique:  nonUnique,
+			SeqInIndex: seq,
+			IndexType:  indexType,
+		}
+		indexes = append(indexes, idx)
+	}
+	return indexes, nil
+}
+
+func (s *SqlServerDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
+	schema := "dbo"
+	table := strings.TrimSpace(tableName)
+
+	if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
+		schema = strings.TrimSpace(parts[0])
+		table = strings.TrimSpace(parts[1])
+	}
+
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+	safeDB := quoteBracket(dbName)
+
+	query := fmt.Sprintf(`
+SELECT
+    fk.name AS constraint_name,
+    c.name AS column_name,
+    rs.name AS foreign_schema,
+    rt.name AS foreign_table,
+    rc.name AS foreign_column
+FROM [%s].sys.foreign_keys fk
+JOIN [%s].sys.foreign_key_columns fkc ON fk.object_id = fkc.constraint_object_id
+JOIN [%s].sys.columns c ON fkc.parent_object_id = c.object_id AND fkc.parent_column_id = c.column_id
+JOIN [%s].sys.tables t ON fk.parent_object_id = t.object_id
+JOIN [%s].sys.schemas s ON t.schema_id = s.schema_id
+JOIN [%s].sys.tables rt ON fk.referenced_object_id = rt.object_id
+JOIN [%s].sys.schemas rs ON rt.schema_id = rs.schema_id
+JOIN [%s].sys.columns rc ON fkc.referenced_object_id = rc.object_id AND fkc.referenced_column_id = rc.column_id
+WHERE s.name = '%s' AND t.name = '%s'
+ORDER BY fk.name`,
+		safeDB, safeDB, safeDB, safeDB, safeDB, safeDB, safeDB, safeDB, esc(schema), esc(table))
+
+	data, _, err := s.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var fks []connection.ForeignKeyDefinition
+	for _, row := range data {
+		refSchema := fmt.Sprintf("%v", row["foreign_schema"])
+		refTable := fmt.Sprintf("%v", row["foreign_table"])
+		refTableName := fmt.Sprintf("%s.%s", refSchema, refTable)
+
+		fk := connection.ForeignKeyDefinition{
+			Name:           fmt.Sprintf("%v", row["constraint_name"]),
+			ColumnName:     fmt.Sprintf("%v", row["column_name"]),
+			RefTableName:   refTableName,
+			RefColumnName:  fmt.Sprintf("%v", row["foreign_column"]),
+			ConstraintName: fmt.Sprintf("%v", row["constraint_name"]),
+		}
+		fks = append(fks, fk)
+	}
+	return fks, nil
+}
+
+func (s *SqlServerDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
+	schema := "dbo"
+	table := strings.TrimSpace(tableName)
+
+	if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
+		schema = strings.TrimSpace(parts[0])
+		table = strings.TrimSpace(parts[1])
+	}
+
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+	safeDB := quoteBracket(dbName)
+
+	query := fmt.Sprintf(`
+SELECT
+    tr.name AS trigger_name,
+    CASE WHEN tr.is_instead_of_trigger = 1 THEN 'INSTEAD OF' ELSE 'AFTER' END AS timing,
+    STUFF((
+        SELECT ', ' + te.type_desc
+        FROM [%s].sys.trigger_events te
+        WHERE te.object_id = tr.object_id
+        FOR XML PATH('')
+    ), 1, 2, '') AS event,
+    OBJECT_DEFINITION(tr.object_id) AS statement
+FROM [%s].sys.triggers tr
+JOIN [%s].sys.tables t ON tr.parent_id = t.object_id
+JOIN [%s].sys.schemas s ON t.schema_id = s.schema_id
+WHERE s.name = '%s' AND t.name = '%s'
+ORDER BY tr.name`,
+		safeDB, safeDB, safeDB, safeDB, esc(schema), esc(table))
+
+	data, _, err := s.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var triggers []connection.TriggerDefinition
+	for _, row := range data {
+		trig := connection.TriggerDefinition{
+			Name:      fmt.Sprintf("%v", row["trigger_name"]),
+			Timing:    fmt.Sprintf("%v", row["timing"]),
+			Event:     fmt.Sprintf("%v", row["event"]),
+			Statement: "",
+		}
+		if v, ok := row["statement"]; ok && v != nil {
+			trig.Statement = fmt.Sprintf("%v", v)
+		}
+		triggers = append(triggers, trig)
+	}
+	return triggers, nil
+}
+
+func (s *SqlServerDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
+	if s.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+
+	tx, err := s.conn.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	quoteIdent := func(name string) string {
+		n := strings.TrimSpace(name)
+		n = strings.Trim(n, "[]")
+		n = strings.ReplaceAll(n, "]", "]]")
+		if n == "" {
+			return "[]"
+		}
+		return "[" + n + "]"
+	}
+
+	schema := "dbo"
+	table := strings.TrimSpace(tableName)
+	if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
+		schema = strings.TrimSpace(parts[0])
+		table = strings.TrimSpace(parts[1])
+	}
+
+	qualifiedTable := fmt.Sprintf("%s.%s", quoteIdent(schema), quoteIdent(table))
+
+	// 1. Deletes
+	for _, pk := range changes.Deletes {
+		var wheres []string
+		var args []interface{}
+		idx := 0
+		for k, v := range pk {
+			idx++
+			wheres = append(wheres, fmt.Sprintf("%s = @p%d", quoteIdent(k), idx))
+			args = append(args, sql.Named(fmt.Sprintf("p%d", idx), v))
+		}
+		if len(wheres) == 0 {
+			continue
+		}
+		query := fmt.Sprintf("DELETE FROM %s WHERE %s", qualifiedTable, strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("delete error: %v", err)
+		}
+	}
+
+	// 2. Updates
+	for _, update := range changes.Updates {
+		var sets []string
+		var args []interface{}
+		idx := 0
+
+		for k, v := range update.Values {
+			idx++
+			sets = append(sets, fmt.Sprintf("%s = @p%d", quoteIdent(k), idx))
+			args = append(args, sql.Named(fmt.Sprintf("p%d", idx), v))
+		}
+
+		if len(sets) == 0 {
+			continue
+		}
+
+		var wheres []string
+		for k, v := range update.Keys {
+			idx++
+			wheres = append(wheres, fmt.Sprintf("%s = @p%d", quoteIdent(k), idx))
+			args = append(args, sql.Named(fmt.Sprintf("p%d", idx), v))
+		}
+
+		if len(wheres) == 0 {
+			return fmt.Errorf("update requires keys")
+		}
+
+		query := fmt.Sprintf("UPDATE %s SET %s WHERE %s", qualifiedTable, strings.Join(sets, ", "), strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("update error: %v", err)
+		}
+	}
+
+	// 3. Inserts
+	for _, row := range changes.Inserts {
+		var cols []string
+		var placeholders []string
+		var args []interface{}
+		idx := 0
+
+		for k, v := range row {
+			idx++
+			cols = append(cols, quoteIdent(k))
+			placeholders = append(placeholders, fmt.Sprintf("@p%d", idx))
+			args = append(args, sql.Named(fmt.Sprintf("p%d", idx), v))
+		}
+
+		if len(cols) == 0 {
+			continue
+		}
+
+		query := fmt.Sprintf("INSERT INTO %s (%s) VALUES (%s)", qualifiedTable, strings.Join(cols, ", "), strings.Join(placeholders, ", "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("insert error: %v", err)
+		}
+	}
+
+	return tx.Commit()
+}

internal/db/vastbase_impl.go

@@ -0,0 +1,627 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"net"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"GoNavi-Wails/internal/connection"
+	"GoNavi-Wails/internal/logger"
+	"GoNavi-Wails/internal/ssh"
+	"GoNavi-Wails/internal/utils"
+
+	_ "github.com/lib/pq" // Vastbase is PostgreSQL compatible
+)
+
+// VastbaseDB implements Database interface for Vastbase (海量) database
+// Vastbase is a PostgreSQL-compatible database, so we reuse PostgreSQL driver
+type VastbaseDB struct {
+	conn        *sql.DB
+	pingTimeout time.Duration
+	forwarder   *ssh.LocalForwarder
+}
+
+func (v *VastbaseDB) getDSN(config connection.ConnectionConfig) string {
+	dbname := config.Database
+	if dbname == "" {
+		dbname = "vastbase" // Vastbase default database
+	}
+
+	u := &url.URL{
+		Scheme: "postgres",
+		Host:   net.JoinHostPort(config.Host, strconv.Itoa(config.Port)),
+		Path:   "/" + dbname,
+	}
+	u.User = url.UserPassword(config.User, config.Password)
+	q := url.Values{}
+	q.Set("sslmode", "disable")
+	q.Set("connect_timeout", strconv.Itoa(getConnectTimeoutSeconds(config)))
+	u.RawQuery = q.Encode()
+
+	return u.String()
+}
+
+func (v *VastbaseDB) Connect(config connection.ConnectionConfig) error {
+	var dsn string
+
+	if config.UseSSH {
+		logger.Infof("Vastbase 使用 SSH 连接：地址=%s:%d 用户=%s", config.Host, config.Port, config.User)
+
+		forwarder, err := ssh.GetOrCreateLocalForwarder(config.SSH, config.Host, config.Port)
+		if err != nil {
+			return fmt.Errorf("创建 SSH 隧道失败：%w", err)
+		}
+		v.forwarder = forwarder
+
+		host, portStr, err := net.SplitHostPort(forwarder.LocalAddr)
+		if err != nil {
+			return fmt.Errorf("解析本地转发地址失败：%w", err)
+		}
+
+		port, err := strconv.Atoi(portStr)
+		if err != nil {
+			return fmt.Errorf("解析本地端口失败：%w", err)
+		}
+
+		localConfig := config
+		localConfig.Host = host
+		localConfig.Port = port
+		localConfig.UseSSH = false
+
+		dsn = v.getDSN(localConfig)
+		logger.Infof("Vastbase 通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, config.Host, config.Port)
+	} else {
+		dsn = v.getDSN(config)
+	}
+
+	db, err := sql.Open("postgres", dsn)
+	if err != nil {
+		return fmt.Errorf("打开数据库连接失败：%w", err)
+	}
+	v.conn = db
+	v.pingTimeout = getConnectTimeout(config)
+
+	if err := v.Ping(); err != nil {
+		return fmt.Errorf("连接建立后验证失败：%w", err)
+	}
+	return nil
+}
+
+func (v *VastbaseDB) Close() error {
+	if v.forwarder != nil {
+		if err := v.forwarder.Close(); err != nil {
+			logger.Warnf("关闭 Vastbase SSH 端口转发失败：%v", err)
+		}
+		v.forwarder = nil
+	}
+
+	if v.conn != nil {
+		return v.conn.Close()
+	}
+	return nil
+}
+
+func (v *VastbaseDB) Ping() error {
+	if v.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+	timeout := v.pingTimeout
+	if timeout <= 0 {
+		timeout = 5 * time.Second
+	}
+	ctx, cancel := utils.ContextWithTimeout(timeout)
+	defer cancel()
+	return v.conn.PingContext(ctx)
+}
+
+func (v *VastbaseDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
+	if v.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := v.conn.QueryContext(ctx, query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+
+	return scanRows(rows)
+}
+
+func (v *VastbaseDB) Query(query string) ([]map[string]interface{}, []string, error) {
+	if v.conn == nil {
+		return nil, nil, fmt.Errorf("connection not open")
+	}
+
+	rows, err := v.conn.Query(query)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer rows.Close()
+	return scanRows(rows)
+}
+
+func (v *VastbaseDB) ExecContext(ctx context.Context, query string) (int64, error) {
+	if v.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := v.conn.ExecContext(ctx, query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (v *VastbaseDB) Exec(query string) (int64, error) {
+	if v.conn == nil {
+		return 0, fmt.Errorf("connection not open")
+	}
+	res, err := v.conn.Exec(query)
+	if err != nil {
+		return 0, err
+	}
+	return res.RowsAffected()
+}
+
+func (v *VastbaseDB) GetDatabases() ([]string, error) {
+	data, _, err := v.Query("SELECT datname FROM pg_database WHERE datistemplate = false")
+	if err != nil {
+		return nil, err
+	}
+	var dbs []string
+	for _, row := range data {
+		if val, ok := row["datname"]; ok {
+			dbs = append(dbs, fmt.Sprintf("%v", val))
+		}
+	}
+	return dbs, nil
+}
+
+func (v *VastbaseDB) GetTables(dbName string) ([]string, error) {
+	query := "SELECT schemaname, tablename FROM pg_catalog.pg_tables WHERE schemaname != 'information_schema' AND schemaname NOT LIKE 'pg_%' ORDER BY schemaname, tablename"
+	data, _, err := v.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var tables []string
+	for _, row := range data {
+		schema, okSchema := row["schemaname"]
+		name, okName := row["tablename"]
+		if okSchema && okName {
+			tables = append(tables, fmt.Sprintf("%v.%v", schema, name))
+			continue
+		}
+		if okName {
+			tables = append(tables, fmt.Sprintf("%v", name))
+		}
+	}
+	return tables, nil
+}
+
+func (v *VastbaseDB) GetCreateStatement(dbName, tableName string) (string, error) {
+	return fmt.Sprintf("-- SHOW CREATE TABLE not fully supported for Vastbase in this version.\n-- Table: %s", tableName), nil
+}
+
+func (v *VastbaseDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT
+	a.attname AS column_name,
+	pg_catalog.format_type(a.atttypid, a.atttypmod) AS data_type,
+	CASE WHEN a.attnotnull THEN 'NO' ELSE 'YES' END AS is_nullable,
+	pg_get_expr(ad.adbin, ad.adrelid) AS column_default,
+	col_description(a.attrelid, a.attnum) AS comment,
+	CASE WHEN pk.attname IS NOT NULL THEN 'PRI' ELSE '' END AS column_key
+FROM pg_class c
+JOIN pg_namespace n ON n.oid = c.relnamespace
+JOIN pg_attribute a ON a.attrelid = c.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid = c.oid AND ad.adnum = a.attnum
+LEFT JOIN (
+	SELECT i.indrelid, a3.attname
+	FROM pg_index i
+	JOIN pg_attribute a3 ON a3.attrelid = i.indrelid AND a3.attnum = ANY(i.indkey)
+	WHERE i.indisprimary
+) pk ON pk.indrelid = c.oid AND pk.attname = a.attname
+WHERE c.relkind IN ('r', 'p')
+  AND n.nspname = '%s'
+  AND c.relname = '%s'
+  AND a.attnum > 0
+  AND NOT a.attisdropped
+ORDER BY a.attnum`, esc(schema), esc(table))
+
+	data, _, err := v.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var columns []connection.ColumnDefinition
+	for _, row := range data {
+		col := connection.ColumnDefinition{
+			Name:     fmt.Sprintf("%v", row["column_name"]),
+			Type:     fmt.Sprintf("%v", row["data_type"]),
+			Nullable: fmt.Sprintf("%v", row["is_nullable"]),
+			Key:      fmt.Sprintf("%v", row["column_key"]),
+			Extra:    "",
+			Comment:  "",
+		}
+
+		if val, ok := row["comment"]; ok && val != nil {
+			col.Comment = fmt.Sprintf("%v", val)
+		}
+
+		if val, ok := row["column_default"]; ok && val != nil {
+			def := fmt.Sprintf("%v", val)
+			col.Default = &def
+			if strings.HasPrefix(strings.ToLower(strings.TrimSpace(def)), "nextval(") {
+				col.Extra = "auto_increment"
+			}
+		}
+
+		columns = append(columns, col)
+	}
+	return columns, nil
+}
+
+func (v *VastbaseDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT
+	i.relname AS index_name,
+	a.attname AS column_name,
+	ix.indisunique AS is_unique,
+	x.ordinality AS seq_in_index,
+	am.amname AS index_type
+FROM pg_class t
+JOIN pg_namespace n ON n.oid = t.relnamespace
+JOIN pg_index ix ON t.oid = ix.indrelid
+JOIN pg_class i ON i.oid = ix.indexrelid
+JOIN pg_am am ON i.relam = am.oid
+JOIN unnest(ix.indkey) WITH ORDINALITY AS x(attnum, ordinality) ON TRUE
+JOIN pg_attribute a ON a.attrelid = t.oid AND a.attnum = x.attnum
+WHERE t.relkind IN ('r', 'p')
+  AND t.relname = '%s'
+  AND n.nspname = '%s'
+ORDER BY i.relname, x.ordinality`, esc(table), esc(schema))
+
+	data, _, err := v.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	parseBool := func(val interface{}) bool {
+		switch v := val.(type) {
+		case bool:
+			return v
+		case string:
+			s := strings.ToLower(strings.TrimSpace(v))
+			return s == "t" || s == "true" || s == "1" || s == "y" || s == "yes"
+		default:
+			s := strings.ToLower(strings.TrimSpace(fmt.Sprintf("%v", val)))
+			return s == "t" || s == "true" || s == "1" || s == "y" || s == "yes"
+		}
+	}
+
+	parseInt := func(val interface{}) int {
+		switch v := val.(type) {
+		case int:
+			return v
+		case int64:
+			return int(v)
+		case float64:
+			return int(v)
+		case string:
+			var n int
+			_, _ = fmt.Sscanf(strings.TrimSpace(v), "%d", &n)
+			return n
+		default:
+			var n int
+			_, _ = fmt.Sscanf(strings.TrimSpace(fmt.Sprintf("%v", val)), "%d", &n)
+			return n
+		}
+	}
+
+	var indexes []connection.IndexDefinition
+	for _, row := range data {
+		isUnique := false
+		if val, ok := row["is_unique"]; ok && val != nil {
+			isUnique = parseBool(val)
+		}
+
+		nonUnique := 1
+		if isUnique {
+			nonUnique = 0
+		}
+
+		seq := 0
+		if val, ok := row["seq_in_index"]; ok && val != nil {
+			seq = parseInt(val)
+		}
+
+		indexType := ""
+		if val, ok := row["index_type"]; ok && val != nil {
+			indexType = strings.ToUpper(fmt.Sprintf("%v", val))
+		}
+		if indexType == "" {
+			indexType = "BTREE"
+		}
+
+		idx := connection.IndexDefinition{
+			Name:       fmt.Sprintf("%v", row["index_name"]),
+			ColumnName: fmt.Sprintf("%v", row["column_name"]),
+			NonUnique:  nonUnique,
+			SeqInIndex: seq,
+			IndexType:  indexType,
+		}
+		indexes = append(indexes, idx)
+	}
+	return indexes, nil
+}
+
+func (v *VastbaseDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT
+	tc.constraint_name AS constraint_name,
+	kcu.column_name AS column_name,
+	ccu.table_schema AS foreign_table_schema,
+	ccu.table_name AS foreign_table_name,
+	ccu.column_name AS foreign_column_name
+FROM information_schema.table_constraints AS tc
+JOIN information_schema.key_column_usage AS kcu
+  ON tc.constraint_name = kcu.constraint_name
+  AND tc.table_schema = kcu.table_schema
+JOIN information_schema.constraint_column_usage AS ccu
+  ON ccu.constraint_name = tc.constraint_name
+  AND ccu.table_schema = tc.table_schema
+WHERE tc.constraint_type = 'FOREIGN KEY'
+  AND tc.table_name = '%s'
+  AND tc.table_schema = '%s'
+ORDER BY tc.constraint_name, kcu.ordinal_position`, esc(table), esc(schema))
+
+	data, _, err := v.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var fks []connection.ForeignKeyDefinition
+	for _, row := range data {
+		refSchema := ""
+		if val, ok := row["foreign_table_schema"]; ok && val != nil {
+			refSchema = fmt.Sprintf("%v", val)
+		}
+		refTable := fmt.Sprintf("%v", row["foreign_table_name"])
+		refTableName := refTable
+		if strings.TrimSpace(refSchema) != "" {
+			refTableName = fmt.Sprintf("%s.%s", refSchema, refTable)
+		}
+
+		fk := connection.ForeignKeyDefinition{
+			Name:           fmt.Sprintf("%v", row["constraint_name"]),
+			ColumnName:     fmt.Sprintf("%v", row["column_name"]),
+			RefTableName:   refTableName,
+			RefColumnName:  fmt.Sprintf("%v", row["foreign_column_name"]),
+			ConstraintName: fmt.Sprintf("%v", row["constraint_name"]),
+		}
+		fks = append(fks, fk)
+	}
+	return fks, nil
+}
+
+func (v *VastbaseDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
+	schema := strings.TrimSpace(dbName)
+	if schema == "" {
+		schema = "public"
+	}
+	table := strings.TrimSpace(tableName)
+	if table == "" {
+		return nil, fmt.Errorf("table name required")
+	}
+
+	esc := func(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+	query := fmt.Sprintf(`
+SELECT trigger_name, action_timing, event_manipulation, action_statement
+FROM information_schema.triggers
+WHERE event_object_table = '%s'
+  AND event_object_schema = '%s'
+ORDER BY trigger_name, event_manipulation`, esc(table), esc(schema))
+
+	data, _, err := v.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var triggers []connection.TriggerDefinition
+	for _, row := range data {
+		trig := connection.TriggerDefinition{
+			Name:      fmt.Sprintf("%v", row["trigger_name"]),
+			Timing:    fmt.Sprintf("%v", row["action_timing"]),
+			Event:     fmt.Sprintf("%v", row["event_manipulation"]),
+			Statement: fmt.Sprintf("%v", row["action_statement"]),
+		}
+		triggers = append(triggers, trig)
+	}
+	return triggers, nil
+}
+
+func (v *VastbaseDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
+	query := `
+SELECT table_schema, table_name, column_name, data_type
+FROM information_schema.columns
+WHERE table_schema NOT IN ('pg_catalog', 'information_schema')
+  AND table_schema NOT LIKE 'pg_%'
+ORDER BY table_schema, table_name, ordinal_position`
+
+	data, _, err := v.Query(query)
+	if err != nil {
+		return nil, err
+	}
+
+	var cols []connection.ColumnDefinitionWithTable
+	for _, row := range data {
+		schema := fmt.Sprintf("%v", row["table_schema"])
+		table := fmt.Sprintf("%v", row["table_name"])
+		tableName := table
+		if strings.TrimSpace(schema) != "" {
+			tableName = fmt.Sprintf("%s.%s", schema, table)
+		}
+
+		col := connection.ColumnDefinitionWithTable{
+			TableName: tableName,
+			Name:      fmt.Sprintf("%v", row["column_name"]),
+			Type:      fmt.Sprintf("%v", row["data_type"]),
+		}
+		cols = append(cols, col)
+	}
+	return cols, nil
+}
+
+func (v *VastbaseDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
+	if v.conn == nil {
+		return fmt.Errorf("connection not open")
+	}
+
+	tx, err := v.conn.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	quoteIdent := func(name string) string {
+		n := strings.TrimSpace(name)
+		n = strings.Trim(n, "\"")
+		n = strings.ReplaceAll(n, "\"", "\"\"")
+		if n == "" {
+			return "\"\""
+		}
+		return `"` + n + `"`
+	}
+
+	schema := ""
+	table := strings.TrimSpace(tableName)
+	if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
+		schema = strings.TrimSpace(parts[0])
+		table = strings.TrimSpace(parts[1])
+	}
+
+	qualifiedTable := ""
+	if schema != "" {
+		qualifiedTable = fmt.Sprintf("%s.%s", quoteIdent(schema), quoteIdent(table))
+	} else {
+		qualifiedTable = quoteIdent(table)
+	}
+
+	// 1. Deletes
+	for _, pk := range changes.Deletes {
+		var wheres []string
+		var args []interface{}
+		idx := 0
+		for k, val := range pk {
+			idx++
+			wheres = append(wheres, fmt.Sprintf("%s = $%d", quoteIdent(k), idx))
+			args = append(args, val)
+		}
+		if len(wheres) == 0 {
+			continue
+		}
+		query := fmt.Sprintf("DELETE FROM %s WHERE %s", qualifiedTable, strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("delete error: %v", err)
+		}
+	}
+
+	// 2. Updates
+	for _, update := range changes.Updates {
+		var sets []string
+		var args []interface{}
+		idx := 0
+
+		for k, val := range update.Values {
+			idx++
+			sets = append(sets, fmt.Sprintf("%s = $%d", quoteIdent(k), idx))
+			args = append(args, val)
+		}
+
+		if len(sets) == 0 {
+			continue
+		}
+
+		var wheres []string
+		for k, val := range update.Keys {
+			idx++
+			wheres = append(wheres, fmt.Sprintf("%s = $%d", quoteIdent(k), idx))
+			args = append(args, val)
+		}
+
+		if len(wheres) == 0 {
+			return fmt.Errorf("update requires keys")
+		}
+
+		query := fmt.Sprintf("UPDATE %s SET %s WHERE %s", qualifiedTable, strings.Join(sets, ", "), strings.Join(wheres, " AND "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("update error: %v", err)
+		}
+	}
+
+	// 3. Inserts
+	for _, row := range changes.Inserts {
+		var cols []string
+		var placeholders []string
+		var args []interface{}
+		idx := 0
+
+		for k, val := range row {
+			idx++
+			cols = append(cols, quoteIdent(k))
+			placeholders = append(placeholders, fmt.Sprintf("$%d", idx))
+			args = append(args, val)
+		}
+
+		if len(cols) == 0 {
+			continue
+		}
+
+		query := fmt.Sprintf("INSERT INTO %s (%s) VALUES (%s)", qualifiedTable, strings.Join(cols, ", "), strings.Join(placeholders, ", "))
+		if _, err := tx.Exec(query, args...); err != nil {
+			return fmt.Errorf("insert error: %v", err)
+		}
+	}
+
+	return tx.Commit()
+}

internal/sync/sql_helpers.go

@@ -22,8 +22,11 @@ func quoteIdentByType(dbType string, ident string) string {
 	}
 
 	switch dbType {
-	case "mysql":
+	case "mysql", "mariadb":
 		return "`" + strings.ReplaceAll(ident, "`", "``") + "`"
+	case "sqlserver":
+		escaped := strings.ReplaceAll(ident, "]", "]]")
+		return "[" + escaped + "]"
 	default:
 		return `"` + strings.ReplaceAll(ident, `"`, `""`) + `"`
 	}
@@ -71,7 +74,7 @@ func normalizeSchemaAndTable(dbType string, dbName string, tableName string) (st
 	}
 
 	switch strings.ToLower(strings.TrimSpace(dbType)) {
-	case "postgres", "kingbase":
+	case "postgres", "kingbase", "vastbase":
 		return "public", rawTable
 	default:
 		return rawDB, rawTable
@@ -88,7 +91,7 @@ func qualifiedNameForQuery(dbType string, schema string, table string, original
 	}
 
 	switch strings.ToLower(strings.TrimSpace(dbType)) {
-	case "postgres", "kingbase":
+	case "postgres", "kingbase", "vastbase":
 		s := strings.TrimSpace(schema)
 		if s == "" {
 			s = "public"
@@ -97,7 +100,7 @@ func qualifiedNameForQuery(dbType string, schema string, table string, original
 			return raw
 		}
 		return s + "." + table
-	case "mysql":
+	case "mysql", "mariadb":
 		s := strings.TrimSpace(schema)
 		if s == "" || table == "" {
 			return table