diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index c6f5b3f..7e3c764 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,7 +1,7 @@
 import React, { useState, useEffect, useMemo, useCallback } from 'react';
 import { Layout, Button, ConfigProvider, theme, message, Modal, Spin, Slider, Progress, Switch, Input, InputNumber, Select, Segmented, Tooltip } from 'antd';
 import zhCN from 'antd/locale/zh_CN';
-import { PlusOutlined, ConsoleSqlOutlined, UploadOutlined, DownloadOutlined, CloudDownloadOutlined, BugOutlined, ToolOutlined, GlobalOutlined, InfoCircleOutlined, GithubOutlined, SkinOutlined, CheckOutlined, MinusOutlined, BorderOutlined, CloseOutlined, SettingOutlined, LinkOutlined, BgColorsOutlined, AppstoreOutlined, RobotOutlined, FolderOpenOutlined, HddOutlined, SafetyCertificateOutlined } from '@ant-design/icons';
+import { PlusOutlined, ConsoleSqlOutlined, UploadOutlined, DownloadOutlined, CloudDownloadOutlined, BugOutlined, ToolOutlined, GlobalOutlined, InfoCircleOutlined, GithubOutlined, SkinOutlined, CheckOutlined, MinusOutlined, BorderOutlined, CloseOutlined, SettingOutlined, LinkOutlined, BgColorsOutlined, AppstoreOutlined, RobotOutlined, FolderOpenOutlined, HddOutlined, SafetyCertificateOutlined, SwitcherOutlined } from '@ant-design/icons';
 import { BrowserOpenURL, Environment, EventsOn, Quit, WindowFullscreen, WindowGetPosition, WindowGetSize, WindowIsFullscreen, WindowIsMaximised, WindowIsMinimised, WindowIsNormal, WindowMaximise, WindowMinimise, WindowSetPosition, WindowSetSize, WindowToggleMaximise, WindowUnfullscreen } from '../wailsjs/runtime';
 import Sidebar from './components/Sidebar';
 import TabManager from './components/TabManager';
@@ -69,6 +69,7 @@ import {
   isShortcutMatch,
   normalizeShortcutCombo,
 } from './utils/shortcuts';
+import { resolveTitleBarToggleIconKey, shouldToggleMaximisedWindowForScaleFix } from './utils/windowStateUi';
 import {
   SIDEBAR_UTILITY_ITEM_KEYS,
   resolveAIEntryPlacement,
@@ -168,6 +169,9 @@ function App() {
   const effectiveUiScale = Math.min(MAX_UI_SCALE, Math.max(MIN_UI_SCALE, Number(uiScale) || DEFAULT_UI_SCALE));
   const effectiveFontSize = Math.min(MAX_FONT_SIZE, Math.max(MIN_FONT_SIZE, Math.round(Number(fontSize) || DEFAULT_FONT_SIZE)));
   const tokenFontSize = Math.round(effectiveFontSize * effectiveUiScale);
+  const titleBarToggleIconKey = resolveTitleBarToggleIconKey(
+      windowState === 'fullscreen' ? 'fullscreen' : (windowState === 'maximized' ? 'maximized' : 'normal')
+  );
   const tokenFontSizeSM = Math.max(10, Math.round(tokenFontSize * 0.86));
   const tokenFontSizeLG = Math.max(tokenFontSize + 1, Math.round(tokenFontSize * 1.14));
   const tokenControlHeight = Math.max(24, Math.round(32 * effectiveUiScale));
@@ -639,7 +643,7 @@ function App() {
               });
 
               if (isMaximised) {
-                  if (reason !== 'ratio-change' && !hasViewportScaleDrift) {
+                  if (!shouldToggleMaximisedWindowForScaleFix(reason, hasViewportScaleDrift)) {
                       window.dispatchEvent(new Event('resize'));
                       lastFixAt = Date.now();
                       return;
@@ -2167,19 +2171,34 @@ function App() {
   }, [securityUpdateRepairSource]);
 
   const handleTitleBarWindowToggle = async () => {
+      const syncWindowStateFromRuntime = async () => {
+          try {
+              const [isFullscreen, isMaximised] = await Promise.all([
+                  WindowIsFullscreen().catch(() => false),
+                  WindowIsMaximised().catch(() => false),
+              ]);
+              useStore.getState().setWindowState(isFullscreen ? 'fullscreen' : (isMaximised ? 'maximized' : 'normal'));
+          } catch {
+              // ignore
+          }
+      };
+
       try {
           void emitWindowDiagnostic('action:titlebar-toggle:before');
           if (await WindowIsFullscreen()) {
               await WindowUnfullscreen();
+              await syncWindowStateFromRuntime();
               void emitWindowDiagnostic('action:titlebar-toggle:after-unfullscreen');
               return;
           }
           if (useNativeMacWindowControls && isMacRuntime) {
               await WindowFullscreen();
+              await syncWindowStateFromRuntime();
               void emitWindowDiagnostic('action:titlebar-toggle:after-fullscreen');
               return;
           }
           await WindowToggleMaximise();
+          await syncWindowStateFromRuntime();
           void emitWindowDiagnostic('action:titlebar-toggle:after-toggle-maximise');
       } catch (_) {
           // ignore
@@ -2583,7 +2602,7 @@ function App() {
                       />
                       <Button 
                         type="text" 
-                        icon={<BorderOutlined />} 
+                        icon={titleBarToggleIconKey === 'restore' ? <SwitcherOutlined /> : <BorderOutlined />} 
                         style={{ height: '100%', borderRadius: 0, width: titleBarButtonWidth }} 
                         onClick={() => { void handleTitleBarWindowToggle(); }} 
                       />
diff --git a/frontend/src/components/DataGrid.tsx b/frontend/src/components/DataGrid.tsx
index 81a0213..a87085a 100644
--- a/frontend/src/components/DataGrid.tsx
+++ b/frontend/src/components/DataGrid.tsx
@@ -51,6 +51,15 @@ import {
 import { calculateAutoFitColumnWidth } from './dataGridAutoWidth';
 import { buildSelectedCellClipboardText } from './dataGridSelectionCopy';
 import { applyNoAutoCapAttributesWithin, noAutoCapInputProps } from '../utils/inputAutoCap';
+import {
+    TEMPORAL_FORMATS,
+    formatFromDayjs,
+    getTemporalPickerType,
+    isTemporalColumnType,
+    parseToDayjs,
+    resolveTemporalEditorSaveValue,
+    type TemporalPickerType,
+} from './dataGridTemporal';
 
 // --- Error Boundary ---
 interface DataGridErrorBoundaryState {
@@ -167,51 +176,6 @@ const normalizeDateTimeString = (val: string) => {
     return normalized;
 };
 
-const isTemporalColumnType = (columnType?: string): boolean => {
-    const raw = String(columnType || '').trim().toLowerCase();
-    if (!raw) return false;
-    if (raw.includes('datetime') || raw.includes('timestamp')) return true;
-    const base = raw.split(/[ (]/)[0];
-    return base === 'date' || base === 'time' || base === 'year';
-};
-
-// 根据列类型返回 DatePicker 的 picker 模式
-type TemporalPickerType = 'datetime' | 'date' | 'time' | 'year' | null;
-const getTemporalPickerType = (columnType?: string): TemporalPickerType => {
-    const raw = String(columnType || '').trim().toLowerCase();
-    if (!raw) return null;
-    if (raw.includes('datetime') || raw.includes('timestamp')) return 'datetime';
-    const base = raw.split(/[ (]/)[0];
-    if (base === 'date') return 'date';
-    if (base === 'time') return 'time';
-    if (base === 'year') return 'year';
-    return null;
-};
-
-const TEMPORAL_FORMATS: Record<string, string> = {
-    datetime: 'YYYY-MM-DD HH:mm:ss',
-    date: 'YYYY-MM-DD',
-    time: 'HH:mm:ss',
-    year: 'YYYY',
-};
-
-// 将字符串值转为 dayjs 对象（用于 DatePicker），无效值返回 null
-const parseToDayjs = (val: any, pickerType: TemporalPickerType): dayjs.Dayjs | null => {
-    if (val === null || val === undefined || val === '') return null;
-    const str = String(val).trim();
-    if (!str || /^0{4}-0{2}-0{2}/.test(str)) return null; // 无效日期
-    const fmt = TEMPORAL_FORMATS[pickerType || 'datetime'];
-    const d = dayjs(str, fmt);
-    return d.isValid() ? d : dayjs(str).isValid() ? dayjs(str) : null;
-};
-
-// 将 dayjs 对象格式化为对应格式字符串
-const formatFromDayjs = (val: dayjs.Dayjs | null, pickerType: TemporalPickerType): string => {
-    if (!val || !val.isValid()) return '';
-    const fmt = TEMPORAL_FORMATS[pickerType || 'datetime'];
-    return val.format(fmt);
-};
-
 // --- Helper: Format Value ---
 const formatCellValue = (val: any) => {
     try {
@@ -640,17 +604,14 @@ const EditableCell: React.FC<EditableCellProps> = React.memo(({
     setEditing(!editing);
   };
 
-  const save = async () => {
+  const save = async (pickerValue?: dayjs.Dayjs | null) => {
     try {
       if (!form || !editing) return;
       const fieldName = getCellFieldName(record, dataIndex);
       await form.validateFields([fieldName]);
       let nextValue = form.getFieldValue(fieldName);
-      // 日期时间类型: 将 dayjs 对象转回格式化字符串
-      if (isDateTimeField && nextValue && dayjs.isDayjs(nextValue)) {
-        nextValue = formatFromDayjs(nextValue as dayjs.Dayjs, pickerType);
-      } else if (isDateTimeField && !nextValue) {
-        nextValue = null;
+      if (isDateTimeField) {
+        nextValue = resolveTemporalEditorSaveValue(nextValue, pickerValue, pickerType);
       }
       toggleEdit();
       // 仅当值发生变化时才标记为修改，避免“双击-失焦”导致整行进入 modified 状态（蓝色高亮不清除）。
@@ -689,9 +650,9 @@ const EditableCell: React.FC<EditableCellProps> = React.memo(({
               ref={inputRef}
               style={{ width: '100%' }}
               format={TEMPORAL_FORMATS[pickerType]}
-              onChange={() => setTimeout(save, 0)}
+              onChange={(value) => setTimeout(() => { void save(value); }, 0)}
               onOpenChange={lockTableScroll}
-              onBlur={() => setTimeout(save, 0)}
+              onBlur={() => setTimeout(() => { void save(); }, 0)}
               needConfirm={false}
             />
           ) : pickerType === 'datetime' ? (
@@ -712,7 +673,7 @@ const EditableCell: React.FC<EditableCellProps> = React.memo(({
                   }}
                 >此刻</a>
               )}
-              onOk={() => setTimeout(save, 0)}
+              onOk={(value) => setTimeout(() => { void save((value as dayjs.Dayjs | null | undefined) ?? undefined); }, 0)}
               onOpenChange={(open) => {
                 pickerOpenRef.current = open;
                 lockTableScroll(open);
@@ -732,17 +693,17 @@ const EditableCell: React.FC<EditableCellProps> = React.memo(({
               style={{ width: '100%' }}
               format={TEMPORAL_FORMATS[pickerType]}
               picker={pickerType as any}
-              onChange={() => setTimeout(save, 0)}
+              onChange={(value) => setTimeout(() => { void save(value); }, 0)}
               onOpenChange={lockTableScroll}
-              onBlur={() => setTimeout(save, 0)}
+              onBlur={() => setTimeout(() => { void save(); }, 0)}
               needConfirm={false}
             />
           )
         ) : (
           <Input
             ref={inputRef}
-            onPressEnter={save}
-            onBlur={save}
+            onPressEnter={() => { void save(); }}
+            onBlur={() => { void save(); }}
             onFocus={(e) => {
               try {
                 (e.target as HTMLInputElement)?.select?.();
diff --git a/frontend/src/components/DataSyncModal.tsx b/frontend/src/components/DataSyncModal.tsx
index f771915..7726f92 100644
--- a/frontend/src/components/DataSyncModal.tsx
+++ b/frontend/src/components/DataSyncModal.tsx
@@ -8,10 +8,12 @@ import { EventsOn } from '../../wailsjs/runtime/runtime';
 import { isMacLikePlatform, normalizeOpacityForPlatform, resolveAppearanceValues, resolveTextInputSafeBackdropFilter } from '../utils/appearance';
 import { buildRpcConnectionConfig } from '../utils/connectionRpcConfig';
 import { formatLocalDateTimeLiteral, normalizeTemporalLiteralText } from './dataGridCopyInsert';
+import { buildDataSyncRequest, type SourceDatasetMode, validateDataSyncSelection } from './dataSyncRequest';
 
 const { Title, Text } = Typography;
 const { Step } = Steps;
 const { Option } = Select;
+const { TextArea } = Input;
 
 type SyncLogEvent = { jobId: string; level?: string; message?: string; ts?: number };
 type SyncProgressEvent = { jobId: string; percent?: number; current?: number; total?: number; table?: string; stage?: string };
@@ -24,6 +26,7 @@ type TableDiffSummary = {
   updates?: number;
   deletes?: number;
   same?: number;
+  schemaDiffCount?: number;
   message?: string;
   targetTableExists?: boolean;
   plannedAction?: string;
@@ -123,6 +126,15 @@ const buildSqlPreview = (
     ? previewData.columnTypes as Record<string, string>
     : {};
   const statements: string[] = [];
+  const schemaStatements = Array.isArray(previewData.schemaStatements)
+    ? previewData.schemaStatements
+        .map((item: any) => String(item || '').trim())
+        .filter((item: string) => item.length > 0)
+    : [];
+
+  schemaStatements.forEach((statement: string) => {
+    statements.push(statement.endsWith(';') ? statement : `${statement};`);
+  });
 
   const insertRows = Array.isArray(previewData.inserts) ? previewData.inserts : [];
   const updateRows = Array.isArray(previewData.updates) ? previewData.updates : [];
@@ -204,6 +216,8 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
   // Step 2: Tables
   const [allTables, setAllTables] = useState<string[]>([]);
   const [selectedTables, setSelectedTables] = useState<string[]>([]);
+  const [sourceDatasetMode, setSourceDatasetMode] = useState<SourceDatasetMode>('table');
+  const [sourceQuery, setSourceQuery] = useState<string>('');
 
   // Options
   const [workflowType, setWorkflowType] = useState<WorkflowType>('sync');
@@ -284,7 +298,10 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
         setTargetConnId('');
         setSourceDb('');
         setTargetDb('');
+        setAllTables([]);
         setSelectedTables([]);
+        setSourceDatasetMode('table');
+        setSourceQuery('');
         setWorkflowType('sync');
         setSyncContent('data');
         setSyncMode('insert_update');
@@ -332,6 +349,28 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
       }
   }, [workflowType]);
 
+  useEffect(() => {
+      if (sourceDatasetMode !== 'query') return;
+      if (workflowType !== 'sync') {
+          setWorkflowType('sync');
+      }
+      if (syncContent !== 'data') {
+          setSyncContent('data');
+      }
+      if (targetTableStrategy !== 'existing_only') {
+          setTargetTableStrategy('existing_only');
+      }
+      if (createIndexes) {
+          setCreateIndexes(false);
+      }
+      if (autoAddColumns) {
+          setAutoAddColumns(false);
+      }
+      if (selectedTables.length > 1) {
+          setSelectedTables(selectedTables.slice(0, 1));
+      }
+  }, [sourceDatasetMode, workflowType, syncContent, targetTableStrategy, createIndexes, autoAddColumns, selectedTables]);
+
   const handleSourceConnChange = async (connId: string) => {
       setSourceConnId(connId);
       setSourceDb('');
@@ -377,10 +416,12 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
 
       setLoading(true);
       try {
-          const conn = connections.find(c => c.id === sourceConnId);
+          const connId = isSourceQueryMode ? targetConnId : sourceConnId;
+          const dbName = isSourceQueryMode ? targetDb : sourceDb;
+          const conn = connections.find(c => c.id === connId);
           if (conn) {
-	          const config = normalizeConnConfig(conn, sourceDb);
-	          const res = await DBGetTables(config as any, sourceDb);
+	          const config = normalizeConnConfig(conn, dbName);
+	          const res = await DBGetTables(config as any, dbName);
 	          if (res.success) {
 	              // DBGetTables returns [{Table: "name"}, ...]
 	              const tableRows = Array.isArray(res.data) ? res.data : [];
@@ -388,6 +429,13 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
 	                  .map((row: any) => row?.Table || row?.table || row?.TABLE_NAME || Object.values(row || {})[0])
 	                  .filter((name: any) => typeof name === 'string' && name.trim() !== '');
 	              setAllTables(tables as string[]);
+                  setSelectedTables(prev => {
+                      const existing = prev.filter((name) => tables.includes(name));
+                      if (isSourceQueryMode) {
+                          return existing.slice(0, 1);
+                      }
+                      return existing;
+                  });
 	              setCurrentStep(1);
 	          } else {
                   message.error(res.message);
@@ -405,7 +453,8 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
   };
 
   const analyzeDiff = async () => {
-      if (selectedTables.length === 0) return;
+      const selectionError = validateDataSyncSelection({ sourceDatasetMode, selectedTables, sourceQuery, syncContent });
+      if (selectionError) return message.error(selectionError);
       if (!sourceConnId || !targetConnId) return message.error("Select connections first");
       if (!sourceDb || !targetDb) return message.error("Select databases first");
 
@@ -422,18 +471,20 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
       autoScrollRef.current = true;
       setSyncProgress({ percent: 0, current: 0, total: selectedTables.length, table: '', stage: '差异分析' });
 
-      const config = {
+      const config = buildDataSyncRequest({
           sourceConfig: normalizeConnConfig(sConn, sourceDb),
           targetConfig: normalizeConnConfig(tConn, targetDb),
-          tables: selectedTables,
-          content: syncContent,
-          mode: "insert_update",
+          selectedTables,
+          sourceDatasetMode,
+          sourceQuery,
+          syncContent,
+          syncMode: "insert_update",
           autoAddColumns,
           targetTableStrategy,
           createIndexes,
-          mongoCollectionName: mongoCollectionName.trim(),
+          mongoCollectionName,
           jobId,
-      };
+      });
 
       try {
           const res = await DataSyncAnalyze(config as any);
@@ -475,17 +526,19 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
       setPreviewLoading(true);
       setPreviewData(null);
 
-      const config = {
+      const config = buildDataSyncRequest({
           sourceConfig: normalizeConnConfig(sConn, sourceDb),
           targetConfig: normalizeConnConfig(tConn, targetDb),
-          tables: selectedTables,
-          content: "data",
-          mode: "insert_update",
+          selectedTables,
+          sourceDatasetMode,
+          sourceQuery,
+          syncContent,
+          syncMode: "insert_update",
           autoAddColumns,
           targetTableStrategy,
           createIndexes,
-          mongoCollectionName: mongoCollectionName.trim(),
-      };
+          mongoCollectionName,
+      });
 
       try {
           const res = await DataSyncPreview(config as any, table, 200);
@@ -502,6 +555,11 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
   };
 
   const runSync = async () => {
+      const selectionError = validateDataSyncSelection({ sourceDatasetMode, selectedTables, sourceQuery, syncContent });
+      if (selectionError) {
+          message.error(selectionError);
+          return;
+      }
       if (syncContent !== 'schema' && diffTables.length === 0) {
           message.error("请先对比差异，再开始同步");
           return;
@@ -540,19 +598,21 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
           stage: '准备开始',
       });
       
-      const config = {
+      const config = buildDataSyncRequest({
           sourceConfig: normalizeConnConfig(sConn, sourceDb),
           targetConfig: normalizeConnConfig(tConn, targetDb),
-          tables: selectedTables,
-          content: syncContent,
-          mode: syncMode,
+          selectedTables,
+          sourceDatasetMode,
+          sourceQuery,
+          syncContent,
+          syncMode,
           autoAddColumns,
           targetTableStrategy,
           createIndexes,
-          mongoCollectionName: mongoCollectionName.trim(),
+          mongoCollectionName,
           tableOptions,
           jobId,
-      };
+      });
 
       try {
           const res = await DataSync(config as any);
@@ -596,6 +656,18 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
       const ops = tableOptions[previewTable] || { insert: true, update: true, delete: false };
       return buildSqlPreview(previewData, previewTable, targetType, ops);
   }, [previewData, previewTable, targetConnId, connections, tableOptions]);
+  const previewHasSchemaStatements = useMemo(
+      () => Array.isArray(previewData?.schemaStatements) && previewData.schemaStatements.length > 0,
+      [previewData],
+  );
+  const previewSchemaWarnings = useMemo(
+      () => Array.isArray(previewData?.schemaWarnings) ? previewData.schemaWarnings as string[] : [],
+      [previewData],
+  );
+  const previewHasDataDiff = useMemo(
+      () => Number(previewData?.totalInserts || 0) + Number(previewData?.totalUpdates || 0) + Number(previewData?.totalDeletes || 0) > 0,
+      [previewData],
+  );
 
   const analysisWarnings = useMemo(() => {
       const items: string[] = [];
@@ -606,6 +678,7 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
       return Array.from(new Set(items));
   }, [diffTables]);
 
+  const isSourceQueryMode = sourceDatasetMode === 'query';
   const isMigrationWorkflow = workflowType === 'migration';
   const sourceConn = useMemo(() => connections.find(c => c.id === sourceConnId), [connections, sourceConnId]);
   const targetConn = useMemo(() => connections.find(c => c.id === targetConnId), [connections, targetConnId]);
@@ -838,7 +911,13 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                       <Form.Item label="功能类型">
                           <Select value={workflowType} onChange={setWorkflowType}>
                               <Option value="sync">数据同步（基于已有目标表做差异同步）</Option>
-                              <Option value="migration">跨库迁移（可自动建表后导入）</Option>
+                              <Option value="migration" disabled={isSourceQueryMode}>跨库迁移（可自动建表后导入）</Option>
+                          </Select>
+                      </Form.Item>
+                      <Form.Item label="源数据方式">
+                          <Select value={sourceDatasetMode} onChange={setSourceDatasetMode}>
+                              <Option value="table">按表同步</Option>
+                              <Option value="query">按 SQL 结果集同步</Option>
                           </Select>
                       </Form.Item>
                       <Alert
@@ -849,11 +928,19 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                               ? '当前为“跨库迁移”模式：适合将表迁移到另一数据源，可自动建表并导入数据。'
                               : '当前为“数据同步”模式：适合目标表已存在时做增量同步或覆盖导入。'}
                       />
+                      {isSourceQueryMode && (
+                          <Alert
+                              type="info"
+                              showIcon
+                              style={{ marginBottom: 12 }}
+                              message="SQL 结果集同步当前只支持：源端自定义 SQL -> 单个已存在目标表；查询结果需包含目标表主键列。"
+                          />
+                      )}
                       <Form.Item label={isMigrationWorkflow ? '迁移内容' : '同步内容'}>
                           <Select value={syncContent} onChange={setSyncContent}>
                               <Option value="data">仅同步数据</Option>
-                              <Option value="schema">仅同步结构</Option>
-                              <Option value="both">同步结构 + 数据</Option>
+                              <Option value="schema" disabled={isSourceQueryMode}>仅同步结构</Option>
+                              <Option value="both" disabled={isSourceQueryMode}>同步结构 + 数据</Option>
                           </Select>
                       </Form.Item>
                       <Form.Item label={isMigrationWorkflow ? '迁移模式' : '同步模式'}>
@@ -864,7 +951,7 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                           </Select>
                       </Form.Item>
                       <Form.Item label={isMigrationWorkflow ? '目标表处理策略' : '目标表要求'}>
-                          <Select value={targetTableStrategy} onChange={setTargetTableStrategy} disabled={!isMigrationWorkflow}>
+                          <Select value={targetTableStrategy} onChange={setTargetTableStrategy} disabled={!isMigrationWorkflow || isSourceQueryMode}>
                               <Option value="existing_only">仅使用已有目标表</Option>
                               <Option value="auto_create_if_missing">目标表不存在时自动建表后导入</Option>
                               <Option value="smart">智能模式（存在则直接导入，不存在则自动建表）</Option>
@@ -887,12 +974,12 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                           </Form.Item>
                       )}
                       <Form.Item>
-                          <Checkbox checked={autoAddColumns} onChange={(e) => setAutoAddColumns(e.target.checked)}>
-                              自动补齐目标表缺失字段（当前支持 MySQL 目标及 MySQL → Kingbase）
+                          <Checkbox checked={autoAddColumns} onChange={(e) => setAutoAddColumns(e.target.checked)} disabled={isSourceQueryMode}>
+                              自动补齐目标表缺失字段（当前支持 MySQL 目标及 MySQL → Kingbase；SQL 结果集模式暂不支持）
                           </Checkbox>
                       </Form.Item>
                       <Form.Item>
-                          <Checkbox checked={createIndexes} onChange={(e) => setCreateIndexes(e.target.checked)} disabled={!isMigrationWorkflow || targetTableStrategy === 'existing_only'}>
+                          <Checkbox checked={createIndexes} onChange={(e) => setCreateIndexes(e.target.checked)} disabled={!isMigrationWorkflow || targetTableStrategy === 'existing_only' || isSourceQueryMode}>
                               自动迁移可兼容的普通索引/唯一索引（仅自动建表模式生效）
                           </Checkbox>
                       </Form.Item>
@@ -928,21 +1015,56 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
       {currentStep === 1 && (
           <div style={{ display: 'flex', flexDirection: 'column', gap: 14 }}>
               <div style={quietPanelStyle}>
-                  <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: 10 }}>
-                      <Text type="secondary">请选择需要同步的表：</Text>
-                  <Checkbox checked={showSameTables} onChange={(e) => setShowSameTables(e.target.checked)}>
-                      显示相同表
-                  </Checkbox>
-                  </div>
-                  <Transfer
-                dataSource={allTables.map(t => ({ key: t, title: t }))}
-                titles={['源表', '已选表']}
-                targetKeys={selectedTables}
-                onChange={(keys) => setSelectedTables(keys as string[])}
-                render={item => item.title}
-                listStyle={{ width: 390, height: 320, marginTop: 0, borderRadius: 14, overflow: 'hidden' }}
-                locale={{ itemUnit: '项', itemsUnit: '项', searchPlaceholder: '搜索表…', notFoundContent: '暂无数据' }}
-              />
+                  {!isSourceQueryMode && (
+                      <>
+                          <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: 10 }}>
+                              <Text type="secondary">请选择需要同步的表：</Text>
+                              <Checkbox checked={showSameTables} onChange={(e) => setShowSameTables(e.target.checked)}>
+                                  显示相同表
+                              </Checkbox>
+                          </div>
+                          <Transfer
+                              dataSource={allTables.map(t => ({ key: t, title: t }))}
+                              titles={['源表', '已选表']}
+                              targetKeys={selectedTables}
+                              onChange={(keys) => setSelectedTables(keys as string[])}
+                              render={item => item.title}
+                              listStyle={{ width: 390, height: 320, marginTop: 0, borderRadius: 14, overflow: 'hidden' }}
+                              locale={{ itemUnit: '项', itemsUnit: '项', searchPlaceholder: '搜索表…', notFoundContent: '暂无数据' }}
+                          />
+                      </>
+                  )}
+                  {isSourceQueryMode && (
+                      <Form layout="vertical">
+                          <Alert
+                              type="info"
+                              showIcon
+                              style={{ marginBottom: 12 }}
+                              message="请输入源查询 SQL，并选择一个目标表。差异分析会直接基于该结果集与目标表对比。"
+                          />
+                          <Form.Item label="源查询 SQL">
+                              <TextArea
+                                  value={sourceQuery}
+                                  onChange={(e) => setSourceQuery(e.target.value)}
+                                  rows={8}
+                                  placeholder="例如：SELECT id, name, email FROM users WHERE status = 'active'"
+                                  spellCheck={false}
+                              />
+                          </Form.Item>
+                          <Form.Item label="目标表">
+                              <Select
+                                  value={selectedTables[0]}
+                                  onChange={(value) => setSelectedTables(value ? [value] : [])}
+                                  showSearch
+                                  allowClear
+                                  placeholder="请选择一个目标表"
+                                  optionFilterProp="children"
+                              >
+                                  {allTables.map((table) => <Option key={table} value={table}>{table}</Option>)}
+                              </Select>
+                          </Form.Item>
+                      </Form>
+                  )}
               </div>
 
               {diffTables.length > 0 && (
@@ -1061,8 +1183,9 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                                   render: (_: any, r: any) => {
                                       const can = !!r.canSync;
                                       const hasDiff = Number(r.inserts || 0) + Number(r.updates || 0) + Number(r.deletes || 0) > 0;
+                                      const hasSchemaDiff = Number(r.schemaDiffCount || 0) > 0;
                                       return (
-                                          <Button size="small" disabled={!can || !hasDiff || analyzing} onClick={() => openPreview(r.table)}>
+                                          <Button size="small" disabled={!can || !(hasDiff || hasSchemaDiff) || analyzing} onClick={() => openPreview(r.table)}>
                                               查看
                                           </Button>
                                       );
@@ -1134,14 +1257,14 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
 	          {currentStep === 1 && (
 	              <>
 	                <Button onClick={() => setCurrentStep(0)} style={{ marginRight: 8 }}>上一步</Button>
-	                <Button onClick={analyzeDiff} loading={loading} disabled={syncContent === 'schema' || selectedTables.length === 0 || analyzing} style={{ marginRight: 8 }}>
+	                <Button onClick={analyzeDiff} loading={loading} disabled={syncContent === 'schema' || selectedTables.length === 0 || analyzing || (isSourceQueryMode && !sourceQuery.trim())} style={{ marginRight: 8 }}>
 	                    对比差异
 	                </Button>
 	                <Button
 	                    type="primary"
 	                    onClick={runSync}
                     loading={loading}
-                    disabled={selectedTables.length === 0 || (syncContent !== 'schema' && diffTables.length === 0)}
+                    disabled={selectedTables.length === 0 || (isSourceQueryMode && !sourceQuery.trim()) || (syncContent !== 'schema' && diffTables.length === 0)}
                 >
                     开始同步
                 </Button>
@@ -1169,12 +1292,59 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                 <Alert
                     type="info"
                     showIcon
-                    message={`插入 ${previewData.totalInserts || 0}，更新 ${previewData.totalUpdates || 0}，删除 ${previewData.totalDeletes || 0}（预览最多展示 200 条/类型）`}
+                    message={
+                        previewHasDataDiff
+                            ? `插入 ${previewData.totalInserts || 0}，更新 ${previewData.totalUpdates || 0}，删除 ${previewData.totalDeletes || 0}（预览最多展示 200 条/类型）`
+                            : (previewData.schemaSummary || `检测到 ${previewSql.statementCount} 条结构变更语句`)
+                    }
                 />
+                {previewSchemaWarnings.length > 0 && (
+                    <Alert
+                        style={{ marginTop: 12 }}
+                        type="warning"
+                        showIcon
+                        message="结构预览包含风险或降级项"
+                        description={
+                            <ul style={{ margin: 0, paddingLeft: 18 }}>
+                                {previewSchemaWarnings.slice(0, 8).map((item) => <li key={item}>{item}</li>)}
+                                {previewSchemaWarnings.length > 8 && <li>还有 {previewSchemaWarnings.length - 8} 项未展开</li>}
+                            </ul>
+                        }
+                    />
+                )}
                 <Divider />
                 <Tabs
                     items={[
-                        {
+                        ...(previewHasSchemaStatements ? [{
+                            key: 'schema',
+                            label: `结构(${Array.isArray(previewData.schemaStatements) ? previewData.schemaStatements.length : 0})`,
+                            children: (
+                                <div>
+                                    <Text type="secondary">
+                                        {previewData.schemaSummary || '以下为本次结构同步计划执行的语句。'}
+                                    </Text>
+                                    <pre
+                                        style={{
+                                            marginTop: 8,
+                                            marginBottom: 0,
+                                            padding: 10,
+                                            border: '1px solid #f0f0f0',
+                                            borderRadius: 6,
+                                            background: '#fafafa',
+                                            maxHeight: 420,
+                                            overflow: 'auto',
+                                            whiteSpace: 'pre-wrap',
+                                            wordBreak: 'break-word'
+                                        }}
+                                    >
+                                        {Array.isArray(previewData.schemaStatements) && previewData.schemaStatements.length > 0
+                                            ? previewData.schemaStatements.join('\n')
+                                            : '-- 当前表结构无可执行变更'}
+                                    </pre>
+                                </div>
+                            )
+                        }] : []),
+                        ...(previewHasDataDiff ? [{
                             key: 'insert',
                             label: `插入(${previewData.totalInserts || 0})`,
                             children: (
@@ -1274,7 +1444,7 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                                     />
                                 </div>
                             )
-                        },
+                        }] : []),
                         {
                             key: 'sql',
                             label: `SQL(${previewSql.statementCount})`,
@@ -1283,10 +1453,18 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                                     <Alert
                                         type="info"
                                         showIcon
-                                        message="SQL 预览会按当前勾选的插入/更新/删除与行选择范围生成，用于审核确认。"
+                                        message={
+                                            previewHasDataDiff
+                                                ? "SQL 预览会按当前勾选的插入/更新/删除与行选择范围生成，用于审核确认。"
+                                                : "SQL 预览展示将执行的结构变更语句，用于审核确认。"
+                                        }
                                     />
                                     <div style={{ marginTop: 8, marginBottom: 8, display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
-                                        <Text type="secondary">共 {previewSql.statementCount} 条语句（预览数据最多 200 条/类型）</Text>
+                                        <Text type="secondary">
+                                            {previewHasDataDiff
+                                                ? `共 ${previewSql.statementCount} 条语句（预览数据最多 200 条/类型）`
+                                                : `共 ${previewSql.statementCount} 条结构变更语句`}
+                                        </Text>
                                         <Button
                                             size="small"
                                             disabled={!previewSql.sqlText}
@@ -1315,7 +1493,7 @@ const DataSyncModal: React.FC<{ open: boolean; onClose: () => void }> = ({ open,
                                             wordBreak: 'break-word'
                                         }}
                                     >
-                                        {previewSql.sqlText || '-- 当前勾选范围下无 SQL 可预览'}
+                                        {previewSql.sqlText || (previewHasDataDiff ? '-- 当前勾选范围下无 SQL 可预览' : '-- 当前表结构无可执行变更')}
                                     </pre>
                                 </div>
                             )
diff --git a/frontend/src/components/RedisViewer.tsx b/frontend/src/components/RedisViewer.tsx
index fbbf4db..7dd0894 100644
--- a/frontend/src/components/RedisViewer.tsx
+++ b/frontend/src/components/RedisViewer.tsx
@@ -1228,7 +1228,7 @@ const RedisViewer: React.FC<RedisViewerProps> = ({ connectionId, redisDB }) => {
                 const config = getConfig();
                 if (!config) return;
                 try {
-                    const res = await (window as any).go.app.App.RedisDeleteHashField(buildRpcConnectionConfig(config), selectedKey, field);
+                    const res = await (window as any).go.app.App.RedisDeleteHashField(buildRpcConnectionConfig(config), selectedKey, [field]);
                     if (res.success) {
                         message.success('删除成功');
                         loadKeyValue(selectedKey);
diff --git a/frontend/src/components/Sidebar.tsx b/frontend/src/components/Sidebar.tsx
index 8888e0b..ce15041 100644
--- a/frontend/src/components/Sidebar.tsx
+++ b/frontend/src/components/Sidebar.tsx
@@ -48,6 +48,7 @@ import { buildRpcConnectionConfig } from '../utils/connectionRpcConfig';
 import { noAutoCapInputProps } from '../utils/inputAutoCap';
 import { normalizeSidebarViewName, resolveSidebarRuntimeDatabase } from '../utils/sidebarMetadata';
 import { resolveConnectionHostTokens } from '../utils/tabDisplay';
+import { buildTableSelectQuery } from '../utils/objectQueryTemplates';
 
 const { Search } = Input;
 
@@ -3556,7 +3557,7 @@ const Sidebar: React.FC<{ onEditConnection?: (conn: SavedConnection) => void }>
                 icon: <ConsoleSqlOutlined />,
                 onClick: () => {
                    const tableName = String(node.dataRef?.tableName || '').trim();
-                   const queryTemplate = tableName ? `SELECT * FROM ${tableName};` : 'SELECT * FROM ';
+                   const queryTemplate = buildTableSelectQuery(getMetadataDialect(node.dataRef as SavedConnection), tableName);
                    addTab({
                        id: `query-${Date.now()}`,
                        title: `新建查询`,
diff --git a/frontend/src/components/TableOverview.tsx b/frontend/src/components/TableOverview.tsx
index 448f21f..73cdcae 100644
--- a/frontend/src/components/TableOverview.tsx
+++ b/frontend/src/components/TableOverview.tsx
@@ -8,6 +8,7 @@ import { useAutoFetchVisibility } from '../utils/autoFetchVisibility';
 import { buildRpcConnectionConfig } from '../utils/connectionRpcConfig';
 import { noAutoCapInputProps } from '../utils/inputAutoCap';
 import { getTableDataDangerActionMeta, supportsTableTruncateAction, type TableDataDangerActionKind } from './tableDataDangerActions';
+import { buildTableSelectQuery } from '../utils/objectQueryTemplates';
 
 interface TableOverviewProps {
     tab: TabData;
@@ -167,6 +168,10 @@ const TableOverview: React.FC<TableOverviewProps> = ({ tab }) => {
     const [viewMode, setViewMode] = useState<ViewMode>('list');
 
     const connection = useMemo(() => connections.find(c => c.id === tab.connectionId), [connections, tab.connectionId]);
+    const metadataDialect = useMemo(
+        () => getMetadataDialect(connection?.config?.type || '', connection?.config?.driver),
+        [connection?.config?.driver, connection?.config?.type]
+    );
     const autoFetchVisible = useAutoFetchVisibility();
 
     const loadData = useCallback(async () => {
@@ -181,11 +186,10 @@ const TableOverview: React.FC<TableOverviewProps> = ({ tab }) => {
                 useSSH: connection.config.useSSH || false,
                 ssh: connection.config.ssh || { host: '', port: 22, user: '', password: '', keyPath: '' },
             };
-            const dialect = getMetadataDialect(connection.config.type, connection.config.driver);
-            const sql = buildTableStatusSQL(dialect, tab.dbName || '', (tab as any).schemaName);
+            const sql = buildTableStatusSQL(metadataDialect, tab.dbName || '', (tab as any).schemaName);
             const res = await DBQuery(buildRpcConnectionConfig(config) as any, tab.dbName || '', sql);
             if (res.success && Array.isArray(res.data)) {
-                setTables(parseTableStats(dialect, res.data));
+                setTables(parseTableStats(metadataDialect, res.data));
             } else {
                 message.error('获取表信息失败: ' + (res.message || '未知错误'));
             }
@@ -194,7 +198,7 @@ const TableOverview: React.FC<TableOverviewProps> = ({ tab }) => {
         } finally {
             setLoading(false);
         }
-    }, [connection, tab.dbName]);
+    }, [connection, metadataDialect, tab.dbName]);
 
     useEffect(() => {
         if (!autoFetchVisible) {
@@ -487,7 +491,7 @@ const TableOverview: React.FC<TableOverviewProps> = ({ tab }) => {
                                                 type: 'query',
                                                 connectionId: tab.connectionId,
                                                 dbName: tab.dbName,
-                                                query: `SELECT * FROM ${t.name};`,
+                                                query: buildTableSelectQuery(metadataDialect, t.name),
                                             });
                                         }},
                                         { type: 'divider' },
@@ -573,7 +577,7 @@ const TableOverview: React.FC<TableOverviewProps> = ({ tab }) => {
                                                     type: 'query',
                                                     connectionId: tab.connectionId,
                                                     dbName: tab.dbName,
-                                                    query: `SELECT * FROM ${t.name};`,
+                                                    query: buildTableSelectQuery(metadataDialect, t.name),
                                                 });
                                             }},
                                             { type: 'divider' },
diff --git a/frontend/src/components/ai/AIMessageBubble.tsx b/frontend/src/components/ai/AIMessageBubble.tsx
index 93348b5..af6011a 100644
--- a/frontend/src/components/ai/AIMessageBubble.tsx
+++ b/frontend/src/components/ai/AIMessageBubble.tsx
@@ -8,6 +8,7 @@ import { Prism as SyntaxHighlighter } from 'react-syntax-highlighter';
 import { vscDarkPlus, vs } from 'react-syntax-highlighter/dist/esm/styles/prism';
 import { AIChatMessage, AIToolCall } from '../../types';
 import type { OverlayWorkbenchTheme } from '../../utils/overlayWorkbenchTheme';
+import { normalizeAiMarkdown } from '../../utils/aiMarkdown';
 
 // 🔧 性能优化：将 ReactMarkdown 包装为 Memo 组件并提取固定的 plugins
 const remarkPlugins = [remarkGfm];
@@ -27,6 +28,7 @@ const MemoizedMarkdown = React.memo(({
     activeConnectionId?: string;
     activeDbName?: string;
 }) => {
+    const normalizedContent = React.useMemo(() => normalizeAiMarkdown(content), [content]);
     // 缓存 components 对象，避免每次渲染都生成新的函数引用击穿内部子组件的 memo
     const components = React.useMemo(() => ({
         code({ node, inline, className, children, ...props }: any) {
@@ -46,7 +48,7 @@ const MemoizedMarkdown = React.memo(({
 
     return (
         <ReactMarkdown remarkPlugins={remarkPlugins} components={components}>
-            {content}
+            {normalizedContent}
         </ReactMarkdown>
     );
 });
diff --git a/frontend/src/components/dataGridTemporal.test.ts b/frontend/src/components/dataGridTemporal.test.ts
new file mode 100644
index 0000000..18ae576
--- /dev/null
+++ b/frontend/src/components/dataGridTemporal.test.ts
@@ -0,0 +1,10 @@
+import dayjs from 'dayjs';
+import { describe, expect, it } from 'vitest';
+
+import { resolveTemporalEditorSaveValue } from './dataGridTemporal';
+
+describe('dataGridTemporal helpers', () => {
+  it('prefers the picker selected date when form store has not caught up yet', () => {
+    expect(resolveTemporalEditorSaveValue(undefined, dayjs('2026-04-12'), 'date')).toBe('2026-04-12');
+  });
+});
diff --git a/frontend/src/components/dataGridTemporal.ts b/frontend/src/components/dataGridTemporal.ts
new file mode 100644
index 0000000..a6a0195
--- /dev/null
+++ b/frontend/src/components/dataGridTemporal.ts
@@ -0,0 +1,59 @@
+import dayjs from 'dayjs';
+
+export type TemporalPickerType = 'datetime' | 'date' | 'time' | 'year' | null;
+
+export const TEMPORAL_FORMATS: Record<string, string> = {
+  datetime: 'YYYY-MM-DD HH:mm:ss',
+  date: 'YYYY-MM-DD',
+  time: 'HH:mm:ss',
+  year: 'YYYY',
+};
+
+export const isTemporalColumnType = (columnType?: string): boolean => {
+  const raw = String(columnType || '').trim().toLowerCase();
+  if (!raw) return false;
+  if (raw.includes('datetime') || raw.includes('timestamp')) return true;
+  const base = raw.split(/[ (]/)[0];
+  return base === 'date' || base === 'time' || base === 'year';
+};
+
+export const getTemporalPickerType = (columnType?: string): TemporalPickerType => {
+  const raw = String(columnType || '').trim().toLowerCase();
+  if (!raw) return null;
+  if (raw.includes('datetime') || raw.includes('timestamp')) return 'datetime';
+  const base = raw.split(/[ (]/)[0];
+  if (base === 'date') return 'date';
+  if (base === 'time') return 'time';
+  if (base === 'year') return 'year';
+  return null;
+};
+
+export const parseToDayjs = (val: any, pickerType: TemporalPickerType): dayjs.Dayjs | null => {
+  if (val === null || val === undefined || val === '') return null;
+  const str = String(val).trim();
+  if (!str || /^0{4}-0{2}-0{2}/.test(str)) return null;
+  const fmt = TEMPORAL_FORMATS[pickerType || 'datetime'];
+  const d = dayjs(str, fmt);
+  return d.isValid() ? d : dayjs(str).isValid() ? dayjs(str) : null;
+};
+
+export const formatFromDayjs = (val: dayjs.Dayjs | null, pickerType: TemporalPickerType): string => {
+  if (!val || !val.isValid()) return '';
+  const fmt = TEMPORAL_FORMATS[pickerType || 'datetime'];
+  return val.format(fmt);
+};
+
+export const resolveTemporalEditorSaveValue = (
+  formValue: any,
+  pickerValue: dayjs.Dayjs | null | undefined,
+  pickerType: TemporalPickerType,
+): string | null | any => {
+  const value = pickerValue !== undefined ? pickerValue : formValue;
+  if (value && dayjs.isDayjs(value)) {
+    return formatFromDayjs(value as dayjs.Dayjs, pickerType);
+  }
+  if (!value) {
+    return null;
+  }
+  return value;
+};
diff --git a/frontend/src/components/dataSyncRequest.test.ts b/frontend/src/components/dataSyncRequest.test.ts
new file mode 100644
index 0000000..3c6c6e1
--- /dev/null
+++ b/frontend/src/components/dataSyncRequest.test.ts
@@ -0,0 +1,67 @@
+import { describe, expect, it } from 'vitest';
+import { buildDataSyncRequest, validateDataSyncSelection } from './dataSyncRequest';
+
+describe('validateDataSyncSelection', () => {
+  it('requires source query and single target table in query mode', () => {
+    expect(validateDataSyncSelection({
+      sourceDatasetMode: 'query',
+      selectedTables: [],
+      sourceQuery: '',
+      syncContent: 'data',
+    })).toBe('请输入源查询 SQL');
+
+    expect(validateDataSyncSelection({
+      sourceDatasetMode: 'query',
+      selectedTables: [],
+      sourceQuery: 'select 1',
+      syncContent: 'data',
+    })).toBe('SQL 结果集同步需要选择一个目标表');
+
+    expect(validateDataSyncSelection({
+      sourceDatasetMode: 'query',
+      selectedTables: ['users', 'orders'],
+      sourceQuery: 'select 1',
+      syncContent: 'data',
+    })).toBe('SQL 结果集同步需要选择一个目标表');
+  });
+
+  it('forces data-only in query mode', () => {
+    expect(validateDataSyncSelection({
+      sourceDatasetMode: 'query',
+      selectedTables: ['users'],
+      sourceQuery: 'select 1',
+      syncContent: 'both',
+    })).toBe('SQL 结果集同步仅支持仅同步数据');
+  });
+});
+
+describe('buildDataSyncRequest', () => {
+  it('normalizes query mode payload for backend', () => {
+    const payload = buildDataSyncRequest({
+      sourceConfig: { type: 'mysql' },
+      targetConfig: { type: 'mysql' },
+      selectedTables: ['users'],
+      sourceDatasetMode: 'query',
+      sourceQuery: '  SELECT id, name FROM active_users  ',
+      syncContent: 'both',
+      syncMode: 'insert_update',
+      autoAddColumns: true,
+      targetTableStrategy: 'smart',
+      createIndexes: true,
+      mongoCollectionName: '  ',
+      jobId: 'job-1',
+      tableOptions: { users: { insert: true, update: true, delete: false } },
+    });
+
+    expect(payload).toMatchObject({
+      tables: ['users'],
+      sourceQuery: 'SELECT id, name FROM active_users',
+      content: 'data',
+      mode: 'insert_update',
+      autoAddColumns: false,
+      targetTableStrategy: 'existing_only',
+      createIndexes: false,
+      jobId: 'job-1',
+    });
+  });
+});
diff --git a/frontend/src/components/dataSyncRequest.ts b/frontend/src/components/dataSyncRequest.ts
new file mode 100644
index 0000000..6b5cca4
--- /dev/null
+++ b/frontend/src/components/dataSyncRequest.ts
@@ -0,0 +1,85 @@
+export type SourceDatasetMode = 'table' | 'query';
+
+type SyncContent = 'data' | 'schema' | 'both';
+type TargetTableStrategy = 'existing_only' | 'auto_create_if_missing' | 'smart';
+
+type BuildDataSyncRequestParams = {
+  sourceConfig: any;
+  targetConfig: any;
+  selectedTables: string[];
+  sourceDatasetMode: SourceDatasetMode;
+  sourceQuery: string;
+  syncContent: SyncContent;
+  syncMode: string;
+  autoAddColumns: boolean;
+  targetTableStrategy: TargetTableStrategy;
+  createIndexes: boolean;
+  mongoCollectionName: string;
+  jobId?: string;
+  tableOptions?: Record<string, any>;
+};
+
+type ValidateDataSyncSelectionParams = {
+  sourceDatasetMode: SourceDatasetMode;
+  selectedTables: string[];
+  sourceQuery: string;
+  syncContent: SyncContent;
+};
+
+export const validateDataSyncSelection = ({
+  sourceDatasetMode,
+  selectedTables,
+  sourceQuery,
+  syncContent,
+}: ValidateDataSyncSelectionParams): string | null => {
+  if (sourceDatasetMode === 'query') {
+    if (!String(sourceQuery || '').trim()) {
+      return '请输入源查询 SQL';
+    }
+    if (selectedTables.length !== 1) {
+      return 'SQL 结果集同步需要选择一个目标表';
+    }
+    if (syncContent !== 'data') {
+      return 'SQL 结果集同步仅支持仅同步数据';
+    }
+    return null;
+  }
+
+  if (selectedTables.length === 0) {
+    return '请选择至少一张表';
+  }
+  return null;
+};
+
+export const buildDataSyncRequest = ({
+  sourceConfig,
+  targetConfig,
+  selectedTables,
+  sourceDatasetMode,
+  sourceQuery,
+  syncContent,
+  syncMode,
+  autoAddColumns,
+  targetTableStrategy,
+  createIndexes,
+  mongoCollectionName,
+  jobId,
+  tableOptions,
+}: BuildDataSyncRequestParams) => {
+  const isQueryMode = sourceDatasetMode === 'query';
+
+  return {
+    sourceConfig,
+    targetConfig,
+    tables: selectedTables,
+    sourceQuery: isQueryMode ? String(sourceQuery || '').trim() : undefined,
+    content: isQueryMode ? 'data' : syncContent,
+    mode: syncMode,
+    autoAddColumns: isQueryMode ? false : autoAddColumns,
+    targetTableStrategy: isQueryMode ? 'existing_only' : targetTableStrategy,
+    createIndexes: isQueryMode ? false : createIndexes,
+    mongoCollectionName: String(mongoCollectionName || '').trim(),
+    ...(jobId ? { jobId } : {}),
+    ...(tableOptions ? { tableOptions } : {}),
+  };
+};
diff --git a/frontend/src/components/tableDesignerSchemaSql.test.ts b/frontend/src/components/tableDesignerSchemaSql.test.ts
index c991f1f..e45c380 100644
--- a/frontend/src/components/tableDesignerSchemaSql.test.ts
+++ b/frontend/src/components/tableDesignerSchemaSql.test.ts
@@ -51,4 +51,16 @@ describe('tableDesignerSchemaSql', () => {
     expect(sql).not.toContain('AFTER');
     expect(sql).not.toContain(' FIRST');
   });
+
+  it('uses mysql change column syntax when renaming a column', () => {
+    const sql = buildAlterTablePreviewSql(buildInput({
+      dbType: 'mysql',
+      originalColumns: [baseColumn({ _key: 'name', name: 'name', type: 'varchar(64)', nullable: 'YES' })],
+      columns: [baseColumn({ _key: 'name', name: 'display_name', type: 'varchar(64)', nullable: 'YES' })],
+    }));
+
+    expect(sql).toContain('CHANGE COLUMN `name` `display_name` varchar(64) NULL');
+    expect(sql).toContain('FIRST');
+    expect(sql).not.toContain('MODIFY COLUMN `display_name`');
+  });
 });
diff --git a/frontend/src/components/tableDesignerSchemaSql.ts b/frontend/src/components/tableDesignerSchemaSql.ts
index c807e6c..82ff9f5 100644
--- a/frontend/src/components/tableDesignerSchemaSql.ts
+++ b/frontend/src/components/tableDesignerSchemaSql.ts
@@ -140,14 +140,21 @@ const buildMySqlAlterPreviewSql = (input: BuildAlterTablePreviewInput): string =
       return;
     }
 
-    if (
-      curr.name !== orig.name ||
+    const definitionChanged =
       curr.type !== orig.type ||
       curr.nullable !== orig.nullable ||
       curr.default !== orig.default ||
       (curr.comment || '') !== (orig.comment || '') ||
-      Boolean(curr.isAutoIncrement) !== Boolean(orig.isAutoIncrement)
-    ) {
+      Boolean(curr.isAutoIncrement) !== Boolean(orig.isAutoIncrement);
+
+    if (curr.name !== orig.name) {
+      alters.push(
+        `CHANGE COLUMN ${quoteIdentifierPart(orig.name, 'mysql')} ${colDef} ${positionSql}`.trim(),
+      );
+      return;
+    }
+
+    if (definitionChanged) {
       alters.push(`MODIFY COLUMN ${colDef} ${positionSql}`.trim());
     }
   });
diff --git a/frontend/src/utils/aiMarkdown.test.ts b/frontend/src/utils/aiMarkdown.test.ts
new file mode 100644
index 0000000..bad2670
--- /dev/null
+++ b/frontend/src/utils/aiMarkdown.test.ts
@@ -0,0 +1,11 @@
+import { describe, expect, it } from 'vitest';
+
+import { normalizeAiMarkdown } from './aiMarkdown';
+
+describe('normalizeAiMarkdown', () => {
+  it('inserts a missing newline after the fenced code language marker', () => {
+    expect(normalizeAiMarkdown('```sqlSELECT COUNT(*) AS order_count\nFROM customer_order;\n```')).toBe(
+      '```sql\nSELECT COUNT(*) AS order_count\nFROM customer_order;\n```',
+    );
+  });
+});
diff --git a/frontend/src/utils/aiMarkdown.ts b/frontend/src/utils/aiMarkdown.ts
new file mode 100644
index 0000000..3a1ecf5
--- /dev/null
+++ b/frontend/src/utils/aiMarkdown.ts
@@ -0,0 +1,13 @@
+export const normalizeAiMarkdown = (content: string): string => {
+  let text = String(content || '').replace(/\r\n/g, '\n');
+  const knownFenceLanguages = [
+    'sql', 'mermaid', 'json', 'javascript', 'typescript', 'ts', 'js', 'tsx', 'jsx',
+    'bash', 'sh', 'shell', 'python', 'py', 'go', 'java', 'yaml', 'yml', 'html', 'css',
+    'xml', 'markdown', 'md', 'text', 'plaintext', 'vue', 'php', 'ruby', 'rust', 'toml',
+    'ini', 'diff',
+  ];
+  const fencePattern = new RegExp(`(^|\\n)\`\`\`(${knownFenceLanguages.join('|')})([^\\n])`, 'gi');
+  text = text.replace(fencePattern, '$1```$2\n$3');
+  text = text.replace(/([^\n])```(?=\n|$)/g, '$1\n```');
+  return text;
+};
diff --git a/frontend/src/utils/objectQueryTemplates.test.ts b/frontend/src/utils/objectQueryTemplates.test.ts
new file mode 100644
index 0000000..7dd8f35
--- /dev/null
+++ b/frontend/src/utils/objectQueryTemplates.test.ts
@@ -0,0 +1,9 @@
+import { describe, expect, it } from 'vitest';
+
+import { buildTableSelectQuery } from './objectQueryTemplates';
+
+describe('buildTableSelectQuery', () => {
+  it('quotes uppercase postgres table names in new query templates', () => {
+    expect(buildTableSelectQuery('postgres', 'public.MyTable')).toBe('SELECT * FROM public."MyTable";');
+  });
+});
diff --git a/frontend/src/utils/objectQueryTemplates.ts b/frontend/src/utils/objectQueryTemplates.ts
new file mode 100644
index 0000000..7bf65c5
--- /dev/null
+++ b/frontend/src/utils/objectQueryTemplates.ts
@@ -0,0 +1,9 @@
+import { quoteQualifiedIdent } from './sql';
+
+export const buildTableSelectQuery = (dbType: string, tableName: string): string => {
+  const normalizedTableName = String(tableName || '').trim();
+  if (!normalizedTableName) {
+    return 'SELECT * FROM ';
+  }
+  return `SELECT * FROM ${quoteQualifiedIdent(dbType, normalizedTableName)};`;
+};
diff --git a/frontend/src/utils/windowStateUi.test.ts b/frontend/src/utils/windowStateUi.test.ts
new file mode 100644
index 0000000..369ef0f
--- /dev/null
+++ b/frontend/src/utils/windowStateUi.test.ts
@@ -0,0 +1,13 @@
+import { describe, expect, it } from 'vitest';
+
+import { resolveTitleBarToggleIconKey, shouldToggleMaximisedWindowForScaleFix } from './windowStateUi';
+
+describe('windowStateUi', () => {
+  it('does not re-toggle a maximized window on activation when focus returns', () => {
+    expect(shouldToggleMaximisedWindowForScaleFix('activation', true)).toBe(false);
+  });
+
+  it('switches the titlebar toggle icon to restore when the window is maximized', () => {
+    expect(resolveTitleBarToggleIconKey('maximized')).toBe('restore');
+  });
+});
diff --git a/frontend/src/utils/windowStateUi.ts b/frontend/src/utils/windowStateUi.ts
new file mode 100644
index 0000000..f22a1ce
--- /dev/null
+++ b/frontend/src/utils/windowStateUi.ts
@@ -0,0 +1,11 @@
+export type WindowVisualState = 'normal' | 'maximized' | 'fullscreen';
+export type WindowScaleFixReason = 'activation' | 'ratio-change';
+export type TitleBarToggleIconKey = 'maximize' | 'restore';
+
+export const shouldToggleMaximisedWindowForScaleFix = (
+  reason: WindowScaleFixReason,
+  hasViewportScaleDrift: boolean,
+): boolean => reason === 'ratio-change' && hasViewportScaleDrift;
+
+export const resolveTitleBarToggleIconKey = (windowState: WindowVisualState): TitleBarToggleIconKey =>
+  windowState === 'maximized' ? 'restore' : 'maximize';
diff --git a/frontend/wailsjs/go/app/App.d.ts b/frontend/wailsjs/go/app/App.d.ts
index 1fef1b2..c5ec5eb 100755
--- a/frontend/wailsjs/go/app/App.d.ts
+++ b/frontend/wailsjs/go/app/App.d.ts
@@ -153,7 +153,7 @@ export function PreviewImportFile(arg1:string):Promise<connection.QueryResult>;
 
 export function RedisConnect(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;
 
-export function RedisDeleteHashField(arg1:connection.ConnectionConfig,arg2:string,arg3:Array<string>):Promise<connection.QueryResult>;
+export function RedisDeleteHashField(arg1:connection.ConnectionConfig,arg2:string,arg3:any):Promise<connection.QueryResult>;
 
 export function RedisDeleteKeys(arg1:connection.ConnectionConfig,arg2:Array<string>):Promise<connection.QueryResult>;
 
diff --git a/frontend/wailsjs/go/models.ts b/frontend/wailsjs/go/models.ts
index 9c899d1..bd26995 100755
--- a/frontend/wailsjs/go/models.ts
+++ b/frontend/wailsjs/go/models.ts
@@ -849,6 +849,7 @@ export namespace sync {
 	    sourceConfig: connection.ConnectionConfig;
 	    targetConfig: connection.ConnectionConfig;
 	    tables: string[];
+	    sourceQuery?: string;
 	    content?: string;
 	    mode: string;
 	    jobId?: string;
@@ -867,6 +868,7 @@ export namespace sync {
 	        this.sourceConfig = this.convertValues(source["sourceConfig"], connection.ConnectionConfig);
 	        this.targetConfig = this.convertValues(source["targetConfig"], connection.ConnectionConfig);
 	        this.tables = source["tables"];
+	        this.sourceQuery = source["sourceQuery"];
 	        this.content = source["content"];
 	        this.mode = source["mode"];
 	        this.jobId = source["jobId"];
diff --git a/internal/ai/provider/anthropic.go b/internal/ai/provider/anthropic.go
index 58b0c28..434db4c 100644
--- a/internal/ai/provider/anthropic.go
+++ b/internal/ai/provider/anthropic.go
@@ -283,7 +283,15 @@ func (p *AnthropicProvider) Chat(ctx context.Context, req ai.ChatRequest) (*ai.C
 
 	respBody, err := p.doRequest(ctx, body)
 	if err != nil {
-		return nil, err
+		if len(req.Tools) > 0 && isHTTP400Error(err) {
+			body.Tools = nil
+			respBody, err = p.doRequest(ctx, body)
+			if err != nil {
+				return nil, err
+			}
+		} else {
+			return nil, err
+		}
 	}
 	defer respBody.Close()
 
@@ -366,7 +374,15 @@ func (p *AnthropicProvider) ChatStream(ctx context.Context, req ai.ChatRequest,
 
 	respBody, err := p.doRequest(ctx, body)
 	if err != nil {
-		return err
+		if len(req.Tools) > 0 && isHTTP400Error(err) {
+			body.Tools = nil
+			respBody, err = p.doRequest(ctx, body)
+			if err != nil {
+				return err
+			}
+		} else {
+			return err
+		}
 	}
 	defer respBody.Close()
 
diff --git a/internal/ai/provider/anthropic_test.go b/internal/ai/provider/anthropic_test.go
index 298329b..c07c328 100644
--- a/internal/ai/provider/anthropic_test.go
+++ b/internal/ai/provider/anthropic_test.go
@@ -1,8 +1,15 @@
 package provider
 
 import (
+	"context"
+	"encoding/json"
+	"io"
 	"net/http"
+	"net/http/httptest"
+	"strings"
 	"testing"
+
+	"GoNavi-Wails/internal/ai"
 )
 
 func TestNormalizeAnthropicMessagesURL_AppendsMessagesSuffix(t *testing.T) {
@@ -55,3 +62,147 @@ func TestApplyAnthropicAuthHeaders_UsesBearerForDashScopeCompatibleAnthropic(t *
 		t.Fatalf("expected no anthropic-version header for DashScope, got %q", got)
 	}
 }
+
+func TestAnthropicProviderChatRetriesWithoutToolsOnHTTP400(t *testing.T) {
+	requestCount := 0
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		requestCount++
+		if r.URL.Path != "/v1/messages" {
+			t.Fatalf("unexpected request path: %s", r.URL.Path)
+		}
+		body, err := io.ReadAll(r.Body)
+		if err != nil {
+			t.Fatalf("read request body failed: %v", err)
+		}
+		defer r.Body.Close()
+
+		var payload map[string]interface{}
+		if err := json.Unmarshal(body, &payload); err != nil {
+			t.Fatalf("unmarshal request body failed: %v", err)
+		}
+
+		if _, hasTools := payload["tools"]; hasTools {
+			http.Error(w, `{"error":{"message":"tools unsupported"}}`, http.StatusBadRequest)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"content":[{"type":"text","text":"pong"}],"usage":{"input_tokens":1,"output_tokens":1}}`))
+	}))
+	defer server.Close()
+
+	providerInstance, err := NewAnthropicProvider(ai.ProviderConfig{
+		Type:        "anthropic",
+		Name:        "test-anthropic",
+		APIKey:      "sk-test",
+		BaseURL:     server.URL,
+		Model:       "claude-test",
+		MaxTokens:   64,
+		Temperature: 0.1,
+	})
+	if err != nil {
+		t.Fatalf("create provider failed: %v", err)
+	}
+
+	resp, err := providerInstance.Chat(context.Background(), ai.ChatRequest{
+		Messages: []ai.Message{{Role: "user", Content: "ping"}},
+		Tools: []ai.Tool{{
+			Type: "function",
+			Function: ai.ToolFunction{
+				Name:        "get_tables",
+				Description: "test tool",
+				Parameters: map[string]interface{}{
+					"type": "object",
+				},
+			},
+		}},
+	})
+	if err != nil {
+		t.Fatalf("expected chat fallback to succeed, got %v", err)
+	}
+	if resp.Content != "pong" {
+		t.Fatalf("expected fallback content %q, got %q", "pong", resp.Content)
+	}
+	if requestCount != 2 {
+		t.Fatalf("expected 2 requests (with tools then fallback), got %d", requestCount)
+	}
+}
+
+func TestAnthropicProviderChatStreamRetriesWithoutToolsOnHTTP400(t *testing.T) {
+	requestCount := 0
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		requestCount++
+		if r.URL.Path != "/v1/messages" {
+			t.Fatalf("unexpected request path: %s", r.URL.Path)
+		}
+		body, err := io.ReadAll(r.Body)
+		if err != nil {
+			t.Fatalf("read request body failed: %v", err)
+		}
+		defer r.Body.Close()
+
+		var payload map[string]interface{}
+		if err := json.Unmarshal(body, &payload); err != nil {
+			t.Fatalf("unmarshal request body failed: %v", err)
+		}
+
+		if _, hasTools := payload["tools"]; hasTools {
+			http.Error(w, `{"error":{"message":"tools unsupported"}}`, http.StatusBadRequest)
+			return
+		}
+
+		w.Header().Set("Content-Type", "text/event-stream")
+		_, _ = w.Write([]byte(strings.Join([]string{
+			`data: {"type":"content_block_delta","delta":{"type":"text_delta","text":"pong"}}`,
+			``,
+			`data: {"type":"message_stop"}`,
+			``,
+		}, "\n")))
+	}))
+	defer server.Close()
+
+	providerInstance, err := NewAnthropicProvider(ai.ProviderConfig{
+		Type:        "anthropic",
+		Name:        "test-anthropic",
+		APIKey:      "sk-test",
+		BaseURL:     server.URL,
+		Model:       "claude-test",
+		MaxTokens:   64,
+		Temperature: 0.1,
+	})
+	if err != nil {
+		t.Fatalf("create provider failed: %v", err)
+	}
+
+	var chunks []ai.StreamChunk
+	err = providerInstance.ChatStream(context.Background(), ai.ChatRequest{
+		Messages: []ai.Message{{Role: "user", Content: "ping"}},
+		Tools: []ai.Tool{{
+			Type: "function",
+			Function: ai.ToolFunction{
+				Name:        "get_tables",
+				Description: "test tool",
+				Parameters: map[string]interface{}{
+					"type": "object",
+				},
+			},
+		}},
+	}, func(chunk ai.StreamChunk) {
+		chunks = append(chunks, chunk)
+	})
+	if err != nil {
+		t.Fatalf("expected stream fallback to succeed, got %v", err)
+	}
+	if requestCount != 2 {
+		t.Fatalf("expected 2 requests (with tools then fallback), got %d", requestCount)
+	}
+	if len(chunks) < 2 {
+		t.Fatalf("expected content and done chunks, got %#v", chunks)
+	}
+	if chunks[0].Content != "pong" {
+		t.Fatalf("expected first chunk content %q, got %#v", "pong", chunks[0])
+	}
+	if !chunks[len(chunks)-1].Done {
+		t.Fatalf("expected final done chunk, got %#v", chunks[len(chunks)-1])
+	}
+}
diff --git a/internal/app/legacy_webkit_storage.go b/internal/app/legacy_webkit_storage.go
index bcfea75..edc8011 100644
--- a/internal/app/legacy_webkit_storage.go
+++ b/internal/app/legacy_webkit_storage.go
@@ -9,7 +9,6 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
-	stdRuntime "runtime"
 	"strings"
 	"unicode/utf16"
 	"unicode/utf8"
@@ -44,7 +43,7 @@ func currentBuildType(ctx context.Context) string {
 }
 
 func shouldAttemptLegacyWebKitStorageMigration(buildType string) bool {
-	return stdRuntime.GOOS == "darwin" && strings.EqualFold(strings.TrimSpace(buildType), "dev")
+	return runtimeGOOS() == "darwin" && strings.EqualFold(strings.TrimSpace(buildType), "dev")
 }
 
 func migrateLegacyWebKitStorageIfNeeded(a *App) error {
diff --git a/internal/app/legacy_webkit_storage_test.go b/internal/app/legacy_webkit_storage_test.go
index 7a07d67..8b44228 100644
--- a/internal/app/legacy_webkit_storage_test.go
+++ b/internal/app/legacy_webkit_storage_test.go
@@ -13,6 +13,8 @@ import (
 )
 
 func TestMigrateLegacyWebKitStorageIfNeededImportsConnectionsForDevBuild(t *testing.T) {
+	withTestGOOS(t, "darwin")
+
 	app := NewAppWithSecretStore(newFakeAppSecretStore())
 	app.configDir = t.TempDir()
 	homeDir := t.TempDir()
@@ -81,6 +83,8 @@ func TestMigrateLegacyWebKitStorageIfNeededImportsConnectionsForDevBuild(t *test
 }
 
 func TestMigrateLegacyWebKitStorageIfNeededSkipsWhenConnectionsFileAlreadyExists(t *testing.T) {
+	withTestGOOS(t, "darwin")
+
 	app := NewAppWithSecretStore(newFakeAppSecretStore())
 	app.configDir = t.TempDir()
 	homeDir := t.TempDir()
diff --git a/internal/app/methods_redis.go b/internal/app/methods_redis.go
index 71b70a7..8ac2136 100644
--- a/internal/app/methods_redis.go
+++ b/internal/app/methods_redis.go
@@ -18,8 +18,8 @@ import (
 
 // Redis client cache
 var (
-	redisCache   = make(map[string]redis.RedisClient)
-	redisCacheMu sync.Mutex
+	redisCache         = make(map[string]redis.RedisClient)
+	redisCacheMu       sync.Mutex
 	newRedisClientFunc = redis.NewRedisClient
 )
 
@@ -539,16 +539,62 @@ func (a *App) RedisKeyExists(config connection.ConnectionConfig, key string) con
 	return connection.QueryResult{Success: true, Data: map[string]bool{"exists": exists}}
 }
 
+func normalizeRedisStringArgs(raw any, argName string) ([]string, error) {
+	switch v := raw.(type) {
+	case nil:
+		return nil, fmt.Errorf("%s 不能为空", argName)
+	case string:
+		text := strings.TrimSpace(v)
+		if text == "" {
+			return nil, fmt.Errorf("%s 不能为空", argName)
+		}
+		return []string{text}, nil
+	case []string:
+		items := make([]string, 0, len(v))
+		for _, item := range v {
+			text := strings.TrimSpace(item)
+			if text == "" {
+				continue
+			}
+			items = append(items, text)
+		}
+		if len(items) == 0 {
+			return nil, fmt.Errorf("%s 不能为空", argName)
+		}
+		return items, nil
+	case []interface{}:
+		items := make([]string, 0, len(v))
+		for _, item := range v {
+			text := strings.TrimSpace(fmt.Sprintf("%v", item))
+			if text == "" || text == "<nil>" {
+				continue
+			}
+			items = append(items, text)
+		}
+		if len(items) == 0 {
+			return nil, fmt.Errorf("%s 不能为空", argName)
+		}
+		return items, nil
+	default:
+		return nil, fmt.Errorf("%s 类型无效", argName)
+	}
+}
+
 // RedisDeleteHashField deletes fields from a hash
-func (a *App) RedisDeleteHashField(config connection.ConnectionConfig, key string, fields []string) connection.QueryResult {
+func (a *App) RedisDeleteHashField(config connection.ConnectionConfig, key string, fields any) connection.QueryResult {
 	config.Type = "redis"
 	client, err := a.getRedisClient(config)
 	if err != nil {
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
 
-	if err := client.DeleteHashField(key, fields...); err != nil {
-		logger.Error(err, "RedisDeleteHashField 删除失败：key=%s fields=%v", key, fields)
+	normalizedFields, err := normalizeRedisStringArgs(fields, "fields")
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+
+	if err := client.DeleteHashField(key, normalizedFields...); err != nil {
+		logger.Error(err, "RedisDeleteHashField 删除失败：key=%s fields=%v", key, normalizedFields)
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
 
diff --git a/internal/app/methods_redis_test.go b/internal/app/methods_redis_test.go
index 5f801bf..d17c4f0 100644
--- a/internal/app/methods_redis_test.go
+++ b/internal/app/methods_redis_test.go
@@ -9,7 +9,9 @@ import (
 )
 
 type capturingRedisClient struct {
-	connectConfig connection.ConnectionConfig
+	connectConfig     connection.ConnectionConfig
+	deletedHashKey    string
+	deletedHashFields []string
 }
 
 func (c *capturingRedisClient) Connect(config connection.ConnectionConfig) error {
@@ -45,13 +47,21 @@ func (c *capturingRedisClient) GetString(key string) (string, error) { return ""
 
 func (c *capturingRedisClient) SetString(key, value string, ttl int64) error { return nil }
 
-func (c *capturingRedisClient) GetHash(key string) (map[string]string, error) { return map[string]string{}, nil }
+func (c *capturingRedisClient) GetHash(key string) (map[string]string, error) {
+	return map[string]string{}, nil
+}
 
 func (c *capturingRedisClient) SetHashField(key, field, value string) error { return nil }
 
-func (c *capturingRedisClient) DeleteHashField(key string, fields ...string) error { return nil }
+func (c *capturingRedisClient) DeleteHashField(key string, fields ...string) error {
+	c.deletedHashKey = key
+	c.deletedHashFields = append([]string(nil), fields...)
+	return nil
+}
 
-func (c *capturingRedisClient) GetList(key string, start, stop int64) ([]string, error) { return nil, nil }
+func (c *capturingRedisClient) GetList(key string, start, stop int64) ([]string, error) {
+	return nil, nil
+}
 
 func (c *capturingRedisClient) ListPush(key string, values ...string) error { return nil }
 
@@ -83,7 +93,9 @@ func (c *capturingRedisClient) StreamDelete(key string, ids ...string) (int64, e
 
 func (c *capturingRedisClient) ExecuteCommand(args []string) (interface{}, error) { return nil, nil }
 
-func (c *capturingRedisClient) GetServerInfo() (map[string]string, error) { return map[string]string{}, nil }
+func (c *capturingRedisClient) GetServerInfo() (map[string]string, error) {
+	return map[string]string{}, nil
+}
 
 func (c *capturingRedisClient) GetDatabases() ([]redislib.RedisDBInfo, error) { return nil, nil }
 
@@ -109,7 +121,7 @@ func (c *scriptedRedisClient) Connect(config connection.ConnectionConfig) error
 
 func TestRedisConnectResolvesSavedSecretsByConnectionID(t *testing.T) {
 	testCases := []struct {
-		name          string
+		name           string
 		savedConfig    connection.ConnectionConfig
 		runtimeConfig  connection.ConnectionConfig
 		assertResolved func(t *testing.T, got connection.ConnectionConfig)
@@ -426,3 +438,75 @@ func TestRedisConnectRetriesLegacyDefaultRootUserWithoutUsernameAfterAuthFailure
 		t.Fatalf("expected fallback Redis connect attempt to clear legacy root user, got %q", connectCalls[1].User)
 	}
 }
+
+func TestRedisDeleteHashFieldAcceptsSingleStringField(t *testing.T) {
+	app := NewAppWithSecretStore(newFakeAppSecretStore())
+	app.configDir = t.TempDir()
+
+	CloseAllRedisClients()
+	client := &capturingRedisClient{}
+	originalNewRedisClientFunc := newRedisClientFunc
+	originalResolveDialConfigWithProxyFunc := resolveDialConfigWithProxyFunc
+	defer func() {
+		newRedisClientFunc = originalNewRedisClientFunc
+		resolveDialConfigWithProxyFunc = originalResolveDialConfigWithProxyFunc
+		CloseAllRedisClients()
+	}()
+	newRedisClientFunc = func() redislib.RedisClient {
+		return client
+	}
+	resolveDialConfigWithProxyFunc = func(raw connection.ConnectionConfig) (connection.ConnectionConfig, error) {
+		return raw, nil
+	}
+
+	result := app.RedisDeleteHashField(connection.ConnectionConfig{
+		Type: "redis",
+		Host: "redis.local",
+		Port: 6379,
+	}, "profile", "nickname")
+	if !result.Success {
+		t.Fatalf("RedisDeleteHashField returned failure: %+v", result)
+	}
+	if client.deletedHashKey != "profile" {
+		t.Fatalf("expected hash key profile, got %q", client.deletedHashKey)
+	}
+	if len(client.deletedHashFields) != 1 || client.deletedHashFields[0] != "nickname" {
+		t.Fatalf("expected one deleted hash field nickname, got %v", client.deletedHashFields)
+	}
+}
+
+func TestRedisDeleteHashFieldAcceptsStringSlice(t *testing.T) {
+	app := NewAppWithSecretStore(newFakeAppSecretStore())
+	app.configDir = t.TempDir()
+
+	CloseAllRedisClients()
+	client := &capturingRedisClient{}
+	originalNewRedisClientFunc := newRedisClientFunc
+	originalResolveDialConfigWithProxyFunc := resolveDialConfigWithProxyFunc
+	defer func() {
+		newRedisClientFunc = originalNewRedisClientFunc
+		resolveDialConfigWithProxyFunc = originalResolveDialConfigWithProxyFunc
+		CloseAllRedisClients()
+	}()
+	newRedisClientFunc = func() redislib.RedisClient {
+		return client
+	}
+	resolveDialConfigWithProxyFunc = func(raw connection.ConnectionConfig) (connection.ConnectionConfig, error) {
+		return raw, nil
+	}
+
+	result := app.RedisDeleteHashField(connection.ConnectionConfig{
+		Type: "redis",
+		Host: "redis.local",
+		Port: 6379,
+	}, "profile", []string{"nickname", "avatar"})
+	if !result.Success {
+		t.Fatalf("RedisDeleteHashField returned failure: %+v", result)
+	}
+	if client.deletedHashKey != "profile" {
+		t.Fatalf("expected hash key profile, got %q", client.deletedHashKey)
+	}
+	if len(client.deletedHashFields) != 2 || client.deletedHashFields[0] != "nickname" || client.deletedHashFields[1] != "avatar" {
+		t.Fatalf("unexpected deleted hash fields: %v", client.deletedHashFields)
+	}
+}
diff --git a/internal/app/methods_update.go b/internal/app/methods_update.go
index 9ec71e3..4dfd27c 100644
--- a/internal/app/methods_update.go
+++ b/internal/app/methods_update.go
@@ -493,6 +493,19 @@ func fetchLatestRelease() (*githubRelease, error) {
 }
 
 func expectedAssetName(goos, goarch, version string) (string, error) {
+	executablePath := ""
+	if goos == "linux" {
+		if path, err := os.Executable(); err == nil {
+			if resolved, resolveErr := filepath.EvalSymlinks(path); resolveErr == nil && strings.TrimSpace(resolved) != "" {
+				path = resolved
+			}
+			executablePath = path
+		}
+	}
+	return expectedAssetNameForExecutable(goos, goarch, version, executablePath)
+}
+
+func expectedAssetNameForExecutable(goos, goarch, version, executablePath string) (string, error) {
 	version = strings.TrimSpace(version)
 	version = strings.TrimPrefix(version, "v")
 	version = strings.TrimPrefix(version, "V")
@@ -517,12 +530,26 @@ func expectedAssetName(goos, goarch, version string) (string, error) {
 		}
 	case "linux":
 		if goarch == "amd64" {
-			return fmt.Sprintf("GoNavi-%s-Linux-Amd64.tar.gz", version), nil
+			return fmt.Sprintf("GoNavi-%s-Linux-Amd64%s.tar.gz", version, resolveLinuxReleaseArtifactSuffix(executablePath)), nil
 		}
 	}
 	return "", fmt.Errorf("当前平台暂不支持在线更新：%s/%s", goos, goarch)
 }
 
+func resolveLinuxReleaseArtifactSuffix(executablePath string) string {
+	normalizedPath := strings.ToLower(strings.TrimSpace(executablePath))
+	if normalizedPath == "" {
+		return ""
+	}
+	normalizedPath = strings.ReplaceAll(normalizedPath, "\\", "/")
+	compactPath := strings.ReplaceAll(normalizedPath, "_", "")
+	compactPath = strings.ReplaceAll(compactPath, "-", "")
+	if strings.Contains(normalizedPath, "webkit41") || strings.Contains(compactPath, "webkit241") || strings.Contains(compactPath, "webkit41") {
+		return "-WebKit41"
+	}
+	return ""
+}
+
 func findReleaseAsset(assets []githubAsset, name string) (*githubAsset, error) {
 	for _, asset := range assets {
 		if asset.Name == name {
@@ -1195,8 +1222,12 @@ while kill -0 $PID 2>/dev/null; do
 done
 TMPDIR=$(mktemp -d)
 tar -xzf "$ARCHIVE" -C "$TMPDIR"
-NEWBIN="$TMPDIR/GoNavi"
+TARGET_NAME="$(basename "$TARGET")"
+NEWBIN="$TMPDIR/$TARGET_NAME"
 if [ ! -f "$NEWBIN" ]; then
+  NEWBIN=$(find "$TMPDIR" -type f -name "$TARGET_NAME" | head -n 1)
+fi
+if [ -z "$NEWBIN" ] || [ ! -f "$NEWBIN" ]; then
   NEWBIN=$(find "$TMPDIR" -type f -name "GoNavi" | head -n 1)
 fi
 if [ -z "$NEWBIN" ] || [ ! -f "$NEWBIN" ]; then
diff --git a/internal/app/methods_update_test.go b/internal/app/methods_update_test.go
index ed1beaf..da7704b 100644
--- a/internal/app/methods_update_test.go
+++ b/internal/app/methods_update_test.go
@@ -3,6 +3,7 @@ package app
 import (
 	"errors"
 	stdRuntime "runtime"
+	"strings"
 	"testing"
 )
 
@@ -158,3 +159,41 @@ func TestCheckForUpdatesSilentlySkipsFailureLogs(t *testing.T) {
 		t.Fatalf("expected silent check to skip error logging, got %d", logged)
 	}
 }
+
+func TestExpectedAssetNameForExecutableUsesLinuxWebKit41Suffix(t *testing.T) {
+	assetName, err := expectedAssetNameForExecutable(
+		"linux",
+		"amd64",
+		"v0.6.5",
+		"/opt/GoNavi/gonavi-build-linux-amd64-webkit41",
+	)
+	if err != nil {
+		t.Fatalf("expectedAssetNameForExecutable returned error: %v", err)
+	}
+
+	want := "GoNavi-0.6.5-Linux-Amd64-WebKit41.tar.gz"
+	if assetName != want {
+		t.Fatalf("unexpected linux webkit41 asset name: got %q want %q", assetName, want)
+	}
+}
+
+func TestBuildLinuxScriptPrefersTargetExecutableBasename(t *testing.T) {
+	script := buildLinuxScript(
+		"/tmp/GoNavi-0.6.5-Linux-Amd64-WebKit41.tar.gz",
+		"/opt/GoNavi/gonavi-build-linux-amd64-webkit41",
+		"/tmp/.gonavi-update-linux-0.6.5",
+		12345,
+	)
+
+	mustContain := []string{
+		`TARGET_NAME="$(basename "$TARGET")"`,
+		`NEWBIN="$TMPDIR/$TARGET_NAME"`,
+		`NEWBIN=$(find "$TMPDIR" -type f -name "$TARGET_NAME" | head -n 1)`,
+		`NEWBIN=$(find "$TMPDIR" -type f -name "GoNavi" | head -n 1)`,
+	}
+	for _, want := range mustContain {
+		if !strings.Contains(script, want) {
+			t.Fatalf("linux update script missing required token: %s\nscript:\n%s", want, script)
+		}
+	}
+}
diff --git a/internal/db/clickhouse_impl.go b/internal/db/clickhouse_impl.go
index aad3011..15a5964 100644
--- a/internal/db/clickhouse_impl.go
+++ b/internal/db/clickhouse_impl.go
@@ -26,6 +26,7 @@ const (
 	defaultClickHouseUser     = "default"
 	defaultClickHouseDatabase = "default"
 	minClickHouseReadTimeout  = 5 * time.Minute
+	clickHouseHTTPPortHint    = "8123/8132/8443"
 )
 
 type ClickHouseDB struct {
@@ -133,12 +134,21 @@ func detectClickHouseProtocol(config connection.ConnectionConfig) clickhouse.Pro
 	if strings.HasPrefix(uriText, "http://") || strings.HasPrefix(uriText, "https://") {
 		return clickhouse.HTTP
 	}
-	if config.Port == 8123 || config.Port == 8443 {
+	if isClickHouseHTTPPort(config.Port) {
 		return clickhouse.HTTP
 	}
 	return clickhouse.Native
 }
 
+func isClickHouseHTTPPort(port int) bool {
+	switch port {
+	case 8123, 8132, 8443:
+		return true
+	default:
+		return false
+	}
+}
+
 func isClickHouseProtocolMismatch(err error) bool {
 	if err == nil {
 		return false
@@ -246,14 +256,14 @@ func (c *ClickHouseDB) Connect(config connection.ConnectionConfig) error {
 				logger.Warnf("ClickHouse SSL 优先连接失败，已回退至明文连接")
 			}
 			if pIdx > 0 {
-				logger.Warnf("ClickHouse 已自动切换连接协议为 %s（常见于 8123/8443 HTTP 端口）", protocol.String())
+				logger.Warnf("ClickHouse 已自动切换连接协议为 %s（常见于 %s HTTP 端口）", protocol.String(), clickHouseHTTPPortHint)
 			}
 			return nil
 		}
 	}
 
 	_ = c.Close()
-	return fmt.Errorf("连接建立后验证失败（可检查 ClickHouse 端口与协议是否匹配：Native=9000/9440，HTTP=8123/8443）：%s", strings.Join(failures, "；"))
+	return fmt.Errorf("连接建立后验证失败（可检查 ClickHouse 端口与协议是否匹配：Native=9000/9440，HTTP=%s）：%s", clickHouseHTTPPortHint, strings.Join(failures, "；"))
 }
 
 func (c *ClickHouseDB) Close() error {
diff --git a/internal/db/clickhouse_impl_test.go b/internal/db/clickhouse_impl_test.go
index cd7c7b5..cd7c2f2 100644
--- a/internal/db/clickhouse_impl_test.go
+++ b/internal/db/clickhouse_impl_test.go
@@ -12,6 +12,10 @@ import (
 	"sync"
 	"testing"
 	"time"
+
+	"GoNavi-Wails/internal/connection"
+
+	clickhouse "github.com/ClickHouse/clickhouse-go/v2"
 )
 
 const fakeClickHouseDriverName = "gonavi-fake-clickhouse"
@@ -129,6 +133,65 @@ func TestClickHouseGetDatabasesFallsBackToCurrentDatabase(t *testing.T) {
 	}
 }
 
+func TestDetectClickHouseProtocolTreatsHTTPPortsAsHTTP(t *testing.T) {
+	tests := []struct {
+		name     string
+		config   connection.ConnectionConfig
+		expected clickhouse.Protocol
+	}{
+		{
+			name: "http uri",
+			config: connection.ConnectionConfig{
+				URI: "http://127.0.0.1:8132/default",
+			},
+			expected: clickhouse.HTTP,
+		},
+		{
+			name: "default http port",
+			config: connection.ConnectionConfig{
+				Port: 8123,
+			},
+			expected: clickhouse.HTTP,
+		},
+		{
+			name: "alternate http port 8132",
+			config: connection.ConnectionConfig{
+				Port: 8132,
+			},
+			expected: clickhouse.HTTP,
+		},
+		{
+			name: "https port",
+			config: connection.ConnectionConfig{
+				Port: 8443,
+			},
+			expected: clickhouse.HTTP,
+		},
+		{
+			name: "native port",
+			config: connection.ConnectionConfig{
+				Port: 9000,
+			},
+			expected: clickhouse.Native,
+		},
+		{
+			name: "native tls port",
+			config: connection.ConnectionConfig{
+				Port: 9440,
+			},
+			expected: clickhouse.Native,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if protocol := detectClickHouseProtocol(tt.config); protocol != tt.expected {
+				t.Fatalf("expected protocol %s, got %s", tt.expected.String(), protocol.String())
+			}
+		})
+	}
+}
+
 type fakeClickHouseDriver struct{}
 
 func (fakeClickHouseDriver) Open(name string) (driver.Conn, error) {
diff --git a/internal/db/scan_rows.go b/internal/db/scan_rows.go
index 3810e66..e1959ef 100644
--- a/internal/db/scan_rows.go
+++ b/internal/db/scan_rows.go
@@ -2,6 +2,7 @@ package db
 
 import (
 	"database/sql"
+	"fmt"
 
 	"GoNavi-Wails/internal/connection"
 )
@@ -11,6 +12,7 @@ func scanRows(rows *sql.Rows) ([]map[string]interface{}, []string, error) {
 	if err != nil {
 		return nil, nil, err
 	}
+	columns = ensureUniqueQueryColumnNames(columns)
 
 	colTypes, err := rows.ColumnTypes()
 	if err != nil || len(colTypes) != len(columns) {
@@ -47,6 +49,46 @@ func scanRows(rows *sql.Rows) ([]map[string]interface{}, []string, error) {
 	return resultData, columns, nil
 }
 
+func ensureUniqueQueryColumnNames(columns []string) []string {
+	if len(columns) == 0 {
+		return columns
+	}
+
+	uniqueColumns := make([]string, len(columns))
+	taken := make(map[string]struct{}, len(columns))
+	nextSuffix := make(map[string]int, len(columns))
+
+	for idx, column := range columns {
+		base := column
+		if base == "" {
+			base = fmt.Sprintf("column_%d", idx+1)
+		}
+
+		candidate := base
+		if _, exists := taken[candidate]; exists {
+			suffix := nextSuffix[base]
+			if suffix < 2 {
+				suffix = 2
+			}
+			for {
+				candidate = fmt.Sprintf("%s_%d", base, suffix)
+				if _, exists := taken[candidate]; !exists {
+					break
+				}
+				suffix++
+			}
+			nextSuffix[base] = suffix + 1
+		} else {
+			nextSuffix[base] = 2
+		}
+
+		uniqueColumns[idx] = candidate
+		taken[candidate] = struct{}{}
+	}
+
+	return uniqueColumns
+}
+
 // scanMultiRows 遍历 sql.Rows 中的所有结果集，将每个结果集作为 ResultSetData 返回。
 // 利用 rows.NextResultSet() 支持一次 query 返回多个结果集的场景。
 func scanMultiRows(rows *sql.Rows) ([]connection.ResultSetData, error) {
diff --git a/internal/db/scan_rows_test.go b/internal/db/scan_rows_test.go
new file mode 100644
index 0000000..91c5a62
--- /dev/null
+++ b/internal/db/scan_rows_test.go
@@ -0,0 +1,97 @@
+package db
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"io"
+	"reflect"
+	"sync"
+	"testing"
+)
+
+const scanRowsDuplicateDriverName = "gonavi-scan-rows-duplicate"
+
+var registerScanRowsDuplicateDriverOnce sync.Once
+
+type scanRowsDuplicateDriver struct{}
+
+func (scanRowsDuplicateDriver) Open(name string) (driver.Conn, error) {
+	return scanRowsDuplicateConn{}, nil
+}
+
+type scanRowsDuplicateConn struct{}
+
+func (scanRowsDuplicateConn) Prepare(query string) (driver.Stmt, error) { return nil, driver.ErrSkip }
+func (scanRowsDuplicateConn) Close() error                              { return nil }
+func (scanRowsDuplicateConn) Begin() (driver.Tx, error)                 { return nil, driver.ErrSkip }
+
+func (scanRowsDuplicateConn) QueryContext(_ context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
+	return &scanRowsDuplicateRows{
+		columns: []string{"id", "id", "name"},
+		rows: [][]driver.Value{
+			{int64(1), int64(2), "alice"},
+		},
+	}, nil
+}
+
+var _ driver.QueryerContext = (*scanRowsDuplicateConn)(nil)
+
+type scanRowsDuplicateRows struct {
+	columns []string
+	rows    [][]driver.Value
+	index   int
+}
+
+func (r *scanRowsDuplicateRows) Columns() []string { return append([]string(nil), r.columns...) }
+func (r *scanRowsDuplicateRows) Close() error      { return nil }
+
+func (r *scanRowsDuplicateRows) Next(dest []driver.Value) error {
+	if r.index >= len(r.rows) {
+		return io.EOF
+	}
+	row := r.rows[r.index]
+	for idx := range dest {
+		if idx < len(row) {
+			dest[idx] = row[idx]
+		}
+	}
+	r.index++
+	return nil
+}
+
+func TestScanRowsRenamesDuplicateColumns(t *testing.T) {
+	t.Parallel()
+
+	registerScanRowsDuplicateDriverOnce.Do(func() {
+		sql.Register(scanRowsDuplicateDriverName, scanRowsDuplicateDriver{})
+	})
+
+	dbConn, err := sql.Open(scanRowsDuplicateDriverName, "")
+	if err != nil {
+		t.Fatalf("open duplicate scan rows db failed: %v", err)
+	}
+	defer dbConn.Close()
+
+	rows, err := dbConn.QueryContext(context.Background(), "SELECT 1")
+	if err != nil {
+		t.Fatalf("query duplicate scan rows db failed: %v", err)
+	}
+	defer rows.Close()
+
+	data, columns, err := scanRows(rows)
+	if err != nil {
+		t.Fatalf("scanRows returned error: %v", err)
+	}
+
+	wantColumns := []string{"id", "id_2", "name"}
+	if !reflect.DeepEqual(columns, wantColumns) {
+		t.Fatalf("unexpected columns: got=%v want=%v", columns, wantColumns)
+	}
+	if len(data) != 1 {
+		t.Fatalf("expected one row, got=%d", len(data))
+	}
+	if data[0]["id"] != int64(1) || data[0]["id_2"] != int64(2) || data[0]["name"] != "alice" {
+		t.Fatalf("unexpected row data: %#v", data[0])
+	}
+}
diff --git a/internal/db/tdengine_applychanges_test.go b/internal/db/tdengine_applychanges_test.go
index 8afebd4..7292d35 100644
--- a/internal/db/tdengine_applychanges_test.go
+++ b/internal/db/tdengine_applychanges_test.go
@@ -7,6 +7,8 @@ import (
 	"database/sql"
 	"database/sql/driver"
 	"fmt"
+	"io"
+	"reflect"
 	"strings"
 	"sync"
 	"testing"
@@ -24,9 +26,10 @@ var (
 )
 
 type tdengineRecordingState struct {
-	mu      sync.Mutex
-	queries []string
-	execErr error
+	mu           sync.Mutex
+	queries      []string
+	execErr      error
+	queryResults map[string]tdengineQueryResult
 }
 
 func (s *tdengineRecordingState) snapshotQueries() []string {
@@ -37,6 +40,12 @@ func (s *tdengineRecordingState) snapshotQueries() []string {
 	return queries
 }
 
+type tdengineQueryResult struct {
+	columns []string
+	rows    [][]driver.Value
+	err     error
+}
+
 type tdengineRecordingDriver struct{}
 
 func (tdengineRecordingDriver) Open(name string) (driver.Conn, error) {
@@ -78,6 +87,50 @@ func (c *tdengineRecordingConn) ExecContext(_ context.Context, query string, arg
 
 var _ driver.ExecerContext = (*tdengineRecordingConn)(nil)
 
+func (c *tdengineRecordingConn) QueryContext(_ context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
+	if len(args) > 0 {
+		return nil, fmt.Errorf("unexpected query args: %d", len(args))
+	}
+	c.state.mu.Lock()
+	defer c.state.mu.Unlock()
+	c.state.queries = append(c.state.queries, query)
+	if result, ok := c.state.queryResults[query]; ok {
+		if result.err != nil {
+			return nil, result.err
+		}
+		return &tdengineRecordingRows{columns: result.columns, rows: result.rows}, nil
+	}
+	return &tdengineRecordingRows{}, nil
+}
+
+var _ driver.QueryerContext = (*tdengineRecordingConn)(nil)
+
+type tdengineRecordingRows struct {
+	columns []string
+	rows    [][]driver.Value
+	index   int
+}
+
+func (r *tdengineRecordingRows) Columns() []string {
+	return append([]string(nil), r.columns...)
+}
+
+func (r *tdengineRecordingRows) Close() error { return nil }
+
+func (r *tdengineRecordingRows) Next(dest []driver.Value) error {
+	if r.index >= len(r.rows) {
+		return io.EOF
+	}
+	row := r.rows[r.index]
+	for idx := range dest {
+		if idx < len(row) {
+			dest[idx] = row[idx]
+		}
+	}
+	r.index++
+	return nil
+}
+
 func openTDengineRecordingDB(t *testing.T) (*sql.DB, *tdengineRecordingState) {
 	t.Helper()
 	registerTDengineRecordingDriverOnce.Do(func() {
@@ -87,7 +140,7 @@ func openTDengineRecordingDB(t *testing.T) (*sql.DB, *tdengineRecordingState) {
 	tdengineRecordingDriverMu.Lock()
 	tdengineRecordingDriverSeq++
 	dsn := fmt.Sprintf("tdengine-recording-%d", tdengineRecordingDriverSeq)
-	state := &tdengineRecordingState{}
+	state := &tdengineRecordingState{queryResults: map[string]tdengineQueryResult{}}
 	tdengineRecordingDriverStates[dsn] = state
 	tdengineRecordingDriverMu.Unlock()
 
@@ -166,3 +219,35 @@ func TestTDengineApplyChanges_RejectsMixedUpdatesWithoutPartialWrite(t *testing.
 		t.Fatalf("期望拒绝 mixed changes 时不执行任何 SQL，实际=%#v", queries)
 	}
 }
+
+func TestTDengineGetTablesIncludesSuperTables(t *testing.T) {
+	t.Parallel()
+
+	dbConn, state := openTDengineRecordingDB(t)
+	state.mu.Lock()
+	state.queryResults["SHOW TABLES FROM `metrics`"] = tdengineQueryResult{
+		columns: []string{"name"},
+		rows: [][]driver.Value{
+			{"d001"},
+			{"d002"},
+		},
+	}
+	state.queryResults["SHOW STABLES FROM `metrics`"] = tdengineQueryResult{
+		columns: []string{"name"},
+		rows: [][]driver.Value{
+			{"meters"},
+		},
+	}
+	state.mu.Unlock()
+
+	td := &TDengineDB{conn: dbConn}
+	tables, err := td.GetTables("metrics")
+	if err != nil {
+		t.Fatalf("GetTables returned error: %v", err)
+	}
+
+	want := []string{"d001", "d002", "meters"}
+	if !reflect.DeepEqual(tables, want) {
+		t.Fatalf("unexpected tables: got=%v want=%v", tables, want)
+	}
+}
diff --git a/internal/db/tdengine_impl.go b/internal/db/tdengine_impl.go
index 2812261..0ca37fb 100644
--- a/internal/db/tdengine_impl.go
+++ b/internal/db/tdengine_impl.go
@@ -202,13 +202,17 @@ func (t *TDengineDB) GetDatabases() ([]string, error) {
 }
 
 func (t *TDengineDB) GetTables(dbName string) ([]string, error) {
-	queries := make([]string, 0, 2)
+	queries := make([]string, 0, 4)
 	if strings.TrimSpace(dbName) != "" {
 		queries = append(queries, fmt.Sprintf("SHOW TABLES FROM `%s`", escapeBacktickIdent(dbName)))
+		queries = append(queries, fmt.Sprintf("SHOW STABLES FROM `%s`", escapeBacktickIdent(dbName)))
 	}
 	queries = append(queries, "SHOW TABLES")
+	queries = append(queries, "SHOW STABLES")
 
 	var lastErr error
+	tableSet := make(map[string]struct{})
+	tables := make([]string, 0)
 	for _, query := range queries {
 		data, _, err := t.Query(query)
 		if err != nil {
@@ -216,17 +220,35 @@ func (t *TDengineDB) GetTables(dbName string) ([]string, error) {
 			continue
 		}
 
-		var tables []string
 		for _, row := range data {
 			if val, ok := getValueFromRow(row, "table_name", "tablename", "name", "Table", "table"); ok {
-				tables = append(tables, fmt.Sprintf("%v", val))
+				tableName := strings.TrimSpace(fmt.Sprintf("%v", val))
+				if tableName == "" {
+					continue
+				}
+				if _, exists := tableSet[tableName]; exists {
+					continue
+				}
+				tableSet[tableName] = struct{}{}
+				tables = append(tables, tableName)
 				continue
 			}
 			for _, val := range row {
-				tables = append(tables, fmt.Sprintf("%v", val))
+				tableName := strings.TrimSpace(fmt.Sprintf("%v", val))
+				if tableName == "" {
+					break
+				}
+				if _, exists := tableSet[tableName]; exists {
+					break
+				}
+				tableSet[tableName] = struct{}{}
+				tables = append(tables, tableName)
 				break
 			}
 		}
+	}
+	if len(tables) > 0 {
+		sort.Strings(tables)
 		return tables, nil
 	}
 
diff --git a/internal/sync/analyze.go b/internal/sync/analyze.go
index e1a4af1..4bd62b0 100644
--- a/internal/sync/analyze.go
+++ b/internal/sync/analyze.go
@@ -14,6 +14,7 @@ type TableDiffSummary struct {
 	Updates            int      `json:"updates"`
 	Deletes            int      `json:"deletes"`
 	Same               int      `json:"same"`
+	SchemaDiffCount    int      `json:"schemaDiffCount,omitempty"`
 	Message            string   `json:"message,omitempty"`
 	HasSchema          bool     `json:"hasSchema,omitempty"`
 	TargetTableExists  bool     `json:"targetTableExists,omitempty"`
@@ -38,6 +39,9 @@ func (s *SyncEngine) Analyze(config SyncConfig) SyncAnalyzeResult {
 	if isMongoToRedisKeyspacePair(config) {
 		return s.analyzeMongoToRedis(config)
 	}
+	if hasSourceQuery(config) {
+		return s.analyzeSourceQuery(config)
+	}
 
 	contentRaw := strings.ToLower(strings.TrimSpace(config.Content))
 	syncSchema := false
@@ -109,6 +113,7 @@ func (s *SyncEngine) Analyze(config SyncConfig) SyncAnalyzeResult {
 			summary.UnsupportedObjects = append(summary.UnsupportedObjects, plan.UnsupportedObjects...)
 			summary.IndexesToCreate = plan.IndexesToCreate
 			summary.IndexesSkipped = plan.IndexesSkipped
+			summary.SchemaDiffCount = len(plan.PreDataSQL) + len(plan.PostDataSQL)
 
 			if !plan.TargetTableExists && !plan.AutoCreate {
 				summary.Message = firstNonEmpty(plan.PlannedAction, "目标表不存在，无法执行同步")
@@ -118,7 +123,11 @@ func (s *SyncEngine) Analyze(config SyncConfig) SyncAnalyzeResult {
 
 			if !syncData {
 				summary.CanSync = true
-				summary.Message = firstNonEmpty(plan.PlannedAction, "仅同步结构，未执行数据差异分析")
+				if summary.SchemaDiffCount > 0 {
+					summary.Message = firstNonEmpty(plan.PlannedAction, fmt.Sprintf("检测到 %d 条结构变更", summary.SchemaDiffCount))
+				} else {
+					summary.Message = firstNonEmpty(plan.PlannedAction, "仅同步结构，未执行数据差异分析")
+				}
 				result.Tables = append(result.Tables, summary)
 				return
 			}
diff --git a/internal/sync/preview.go b/internal/sync/preview.go
index 592d0de..7b21a9d 100644
--- a/internal/sync/preview.go
+++ b/internal/sync/preview.go
@@ -19,15 +19,18 @@ type PreviewUpdateRow struct {
 }
 
 type TableDiffPreview struct {
-	Table        string             `json:"table"`
-	PKColumn     string             `json:"pkColumn"`
-	ColumnTypes  map[string]string  `json:"columnTypes,omitempty"`
-	TotalInserts int                `json:"totalInserts"`
-	TotalUpdates int                `json:"totalUpdates"`
-	TotalDeletes int                `json:"totalDeletes"`
-	Inserts      []PreviewRow       `json:"inserts"`
-	Updates      []PreviewUpdateRow `json:"updates"`
-	Deletes      []PreviewRow       `json:"deletes"`
+	Table            string             `json:"table"`
+	PKColumn         string             `json:"pkColumn"`
+	ColumnTypes      map[string]string  `json:"columnTypes,omitempty"`
+	SchemaSummary    string             `json:"schemaSummary,omitempty"`
+	SchemaWarnings   []string           `json:"schemaWarnings,omitempty"`
+	SchemaStatements []string           `json:"schemaStatements,omitempty"`
+	TotalInserts     int                `json:"totalInserts"`
+	TotalUpdates     int                `json:"totalUpdates"`
+	TotalDeletes     int                `json:"totalDeletes"`
+	Inserts          []PreviewRow       `json:"inserts"`
+	Updates          []PreviewUpdateRow `json:"updates"`
+	Deletes          []PreviewRow       `json:"deletes"`
 }
 
 func (s *SyncEngine) Preview(config SyncConfig, tableName string, limit int) (TableDiffPreview, error) {
@@ -43,6 +46,9 @@ func (s *SyncEngine) Preview(config SyncConfig, tableName string, limit int) (Ta
 	if isMongoToRedisKeyspacePair(config) {
 		return s.previewMongoToRedis(config, tableName, limit)
 	}
+	if hasSourceQuery(config) {
+		return s.previewSourceQuery(config, limit)
+	}
 
 	sourceDB, err := newSyncDatabase(config.SourceConfig.Type)
 	if err != nil {
@@ -70,6 +76,19 @@ func (s *SyncEngine) Preview(config SyncConfig, tableName string, limit int) (Ta
 	if !plan.TargetTableExists && !plan.AutoCreate {
 		return TableDiffPreview{}, errors.New(firstNonEmpty(plan.PlannedAction, "目标表不存在，无法预览差异"))
 	}
+	schemaStatements := make([]string, 0, len(plan.PreDataSQL)+len(plan.PostDataSQL))
+	schemaStatements = append(schemaStatements, plan.PreDataSQL...)
+	schemaStatements = append(schemaStatements, plan.PostDataSQL...)
+
+	contentRaw := strings.ToLower(strings.TrimSpace(config.Content))
+	if contentRaw == "schema" {
+		return TableDiffPreview{
+			Table:            tableName,
+			SchemaSummary:    firstNonEmpty(plan.PlannedAction, "仅同步结构"),
+			SchemaWarnings:   append([]string(nil), plan.Warnings...),
+			SchemaStatements: append([]string(nil), schemaStatements...),
+		}, nil
+	}
 
 	pkCols := make([]string, 0, 2)
 	for _, c := range cols {
@@ -111,15 +130,18 @@ func (s *SyncEngine) Preview(config SyncConfig, tableName string, limit int) (Ta
 	}
 
 	out := TableDiffPreview{
-		Table:        tableName,
-		PKColumn:     pkCol,
-		ColumnTypes:  make(map[string]string, len(cols)),
-		TotalInserts: 0,
-		TotalUpdates: 0,
-		TotalDeletes: 0,
-		Inserts:      make([]PreviewRow, 0),
-		Updates:      make([]PreviewUpdateRow, 0),
-		Deletes:      make([]PreviewRow, 0),
+		Table:            tableName,
+		PKColumn:         pkCol,
+		ColumnTypes:      make(map[string]string, len(cols)),
+		SchemaSummary:    firstNonEmpty(plan.PlannedAction, "结构预览"),
+		SchemaWarnings:   append([]string(nil), plan.Warnings...),
+		SchemaStatements: append([]string(nil), schemaStatements...),
+		TotalInserts:     0,
+		TotalUpdates:     0,
+		TotalDeletes:     0,
+		Inserts:          make([]PreviewRow, 0),
+		Updates:          make([]PreviewUpdateRow, 0),
+		Deletes:          make([]PreviewRow, 0),
 	}
 	for _, col := range cols {
 		name := strings.ToLower(strings.TrimSpace(col.Name))
diff --git a/internal/sync/schema_migration.go b/internal/sync/schema_migration.go
index ad6cdc6..0506a59 100644
--- a/internal/sync/schema_migration.go
+++ b/internal/sync/schema_migration.go
@@ -127,12 +127,42 @@ func buildSchemaMigrationPlanLegacy(config SyncConfig, tableName string, sourceD
 		if len(missing) > 0 {
 			plan.Warnings = append(plan.Warnings, fmt.Sprintf("目标表缺失字段 %d 个：%s", len(missing), strings.Join(missing, ", ")))
 		}
-		if config.AutoAddColumns && isMySQLLikeSourceType(sourceType) && normalizeMigrationDBType(targetType) == "kingbase" {
-			addSQL, addWarnings := buildMySQLToKingbaseAddColumnSQL(plan.TargetQueryTable, sourceCols, targetCols)
-			plan.PreDataSQL = append(plan.PreDataSQL, addSQL...)
-			plan.Warnings = append(plan.Warnings, addWarnings...)
-			if len(addSQL) > 0 {
-				plan.PlannedAction = fmt.Sprintf("补齐缺失字段(%d)后导入", len(addSQL))
+		if len(missing) == 0 {
+			plan.PlannedAction = "表结构已一致"
+		} else if config.AutoAddColumns && supportsAutoAddColumnsForPair(sourceType, targetType) {
+			targetSet := make(map[string]struct{}, len(targetCols))
+			for _, col := range targetCols {
+				key := strings.ToLower(strings.TrimSpace(col.Name))
+				if key == "" {
+					continue
+				}
+				targetSet[key] = struct{}{}
+			}
+			for _, col := range sourceCols {
+				key := strings.ToLower(strings.TrimSpace(col.Name))
+				if key == "" {
+					continue
+				}
+				if _, ok := targetSet[key]; ok {
+					continue
+				}
+				addSQL, err := buildAddColumnSQLForPair(sourceType, targetType, plan.TargetQueryTable, col)
+				if err != nil {
+					plan.Warnings = append(plan.Warnings, fmt.Sprintf("字段 %s 自动补齐 SQL 生成失败：%v", col.Name, err))
+					continue
+				}
+				plan.PreDataSQL = append(plan.PreDataSQL, addSQL)
+			}
+			if len(plan.PreDataSQL) > 0 {
+				plan.PlannedAction = fmt.Sprintf("补齐缺失字段(%d)后导入", len(plan.PreDataSQL))
+			} else {
+				plan.PlannedAction = fmt.Sprintf("目标表缺失字段(%d)，但未生成可执行补齐 SQL", len(missing))
+			}
+		} else {
+			if config.AutoAddColumns {
+				plan.PlannedAction = fmt.Sprintf("目标表缺失字段(%d)，当前库对暂不支持自动补齐", len(missing))
+			} else {
+				plan.PlannedAction = fmt.Sprintf("目标表缺失字段(%d)，未开启自动补齐", len(missing))
 			}
 		}
 		if strategy != "existing_only" {
diff --git a/internal/sync/schema_migration_test.go b/internal/sync/schema_migration_test.go
index c946fbe..a8cdbd0 100644
--- a/internal/sync/schema_migration_test.go
+++ b/internal/sync/schema_migration_test.go
@@ -266,6 +266,54 @@ func TestBuildPGLikeToMySQLPlan_AutoCreateWhenTargetMissing(t *testing.T) {
 	}
 }
 
+func TestBuildSchemaMigrationPlan_MySQLToMySQLAddsMissingColumnsForExistingTarget(t *testing.T) {
+	t.Parallel()
+
+	sourceDB := &fakeMigrationDB{
+		columns: map[string][]connection.ColumnDefinition{
+			"shop.users": {
+				{Name: "id", Type: "bigint", Nullable: "NO", Key: "PRI"},
+				{Name: "name", Type: "varchar(128)", Nullable: "YES"},
+				{Name: "aaaa", Type: "varchar(255)", Nullable: "YES"},
+			},
+		},
+	}
+	targetDB := &fakeMigrationDB{
+		columns: map[string][]connection.ColumnDefinition{
+			"app.users": {
+				{Name: "id", Type: "bigint", Nullable: "NO", Key: "PRI"},
+				{Name: "name", Type: "varchar(128)", Nullable: "YES"},
+			},
+		},
+	}
+	cfg := SyncConfig{
+		SourceConfig:        connection.ConnectionConfig{Type: "mysql", Database: "shop"},
+		TargetConfig:        connection.ConnectionConfig{Type: "mysql", Database: "app"},
+		TargetTableStrategy: "existing_only",
+		AutoAddColumns:      true,
+	}
+
+	plan, sourceCols, targetCols, err := buildSchemaMigrationPlan(cfg, "users", sourceDB, targetDB)
+	if err != nil {
+		t.Fatalf("buildSchemaMigrationPlan returned error: %v", err)
+	}
+	if len(sourceCols) != 3 || len(targetCols) != 2 {
+		t.Fatalf("unexpected source/target columns: %d / %d", len(sourceCols), len(targetCols))
+	}
+	if !plan.TargetTableExists {
+		t.Fatalf("expected target table to exist")
+	}
+	if len(plan.PreDataSQL) != 1 {
+		t.Fatalf("expected one pre-data SQL statement, got=%v", plan.PreDataSQL)
+	}
+	if !strings.Contains(plan.PreDataSQL[0], "ALTER TABLE `app`.`users` ADD COLUMN `aaaa` varchar(255) NULL") {
+		t.Fatalf("unexpected add-column SQL: %v", plan.PreDataSQL)
+	}
+	if !strings.Contains(plan.PlannedAction, "补齐缺失字段(1)") {
+		t.Fatalf("unexpected planned action: %s", plan.PlannedAction)
+	}
+}
+
 func TestBuildMySQLToPGLikeCreateTablePlan_GeneratesPostgresDDL(t *testing.T) {
 	t.Parallel()
 
diff --git a/internal/sync/source_query_sync.go b/internal/sync/source_query_sync.go
new file mode 100644
index 0000000..571aa75
--- /dev/null
+++ b/internal/sync/source_query_sync.go
@@ -0,0 +1,461 @@
+package sync
+
+import (
+	"GoNavi-Wails/internal/connection"
+	"GoNavi-Wails/internal/db"
+	"fmt"
+	"strings"
+)
+
+type sourceQuerySyncContext struct {
+	TableName        string
+	TargetSchema     string
+	TargetTable      string
+	TargetQueryTable string
+	TargetType       string
+	TargetCols       []connection.ColumnDefinition
+	PKColumn         string
+	SourceRows       []map[string]interface{}
+	TargetRows       []map[string]interface{}
+}
+
+func hasSourceQuery(config SyncConfig) bool {
+	return strings.TrimSpace(config.SourceQuery) != ""
+}
+
+func validateSourceQuerySyncConfig(config SyncConfig) (string, error) {
+	sourceQuery := strings.TrimSpace(config.SourceQuery)
+	if sourceQuery == "" {
+		return "", fmt.Errorf("源查询 SQL 不能为空")
+	}
+
+	content := strings.ToLower(strings.TrimSpace(config.Content))
+	if content != "" && content != "data" {
+		return "", fmt.Errorf("SQL 结果集同步当前仅支持“仅同步数据”")
+	}
+
+	if len(config.Tables) != 1 {
+		return "", fmt.Errorf("SQL 结果集同步要求且仅允许选择一个目标表")
+	}
+
+	tableName := strings.TrimSpace(config.Tables[0])
+	if tableName == "" {
+		return "", fmt.Errorf("目标表不能为空")
+	}
+	return tableName, nil
+}
+
+func resolveTargetQueryTable(config SyncConfig, tableName string) (string, string, string, string) {
+	targetType := resolveMigrationDBType(config.TargetConfig)
+	targetSchema, targetTable := normalizeSchemaAndTable(targetType, config.TargetConfig.Database, tableName)
+	targetQueryTable := qualifiedNameForQuery(targetType, targetSchema, targetTable, tableName)
+	return targetType, targetSchema, targetTable, targetQueryTable
+}
+
+func resolveSinglePKColumn(cols []connection.ColumnDefinition) (string, error) {
+	pkCols := make([]string, 0, 2)
+	for _, col := range cols {
+		if col.Key == "PRI" || col.Key == "PK" {
+			pkCols = append(pkCols, col.Name)
+		}
+	}
+	if len(pkCols) == 0 {
+		return "", fmt.Errorf("目标表无主键，不支持基于 SQL 结果集的差异分析")
+	}
+	if len(pkCols) > 1 {
+		return "", fmt.Errorf("目标表为复合主键（%s），暂不支持基于 SQL 结果集的差异分析", strings.Join(pkCols, ","))
+	}
+	return pkCols[0], nil
+}
+
+func loadSourceQuerySyncContext(config SyncConfig, sourceDB db.Database, targetDB db.Database, needTargetRows bool, requirePK bool) (sourceQuerySyncContext, error) {
+	tableName, err := validateSourceQuerySyncConfig(config)
+	if err != nil {
+		return sourceQuerySyncContext{}, err
+	}
+
+	targetType, targetSchema, targetTable, targetQueryTable := resolveTargetQueryTable(config, tableName)
+	targetCols, err := targetDB.GetColumns(targetSchema, targetTable)
+	if err != nil {
+		return sourceQuerySyncContext{}, fmt.Errorf("获取目标表字段失败: %w", err)
+	}
+	if len(targetCols) == 0 {
+		return sourceQuerySyncContext{}, fmt.Errorf("目标表 %s 不存在或未读取到字段定义", tableName)
+	}
+
+	sourceRows, _, err := sourceDB.Query(strings.TrimSpace(config.SourceQuery))
+	if err != nil {
+		return sourceQuerySyncContext{}, fmt.Errorf("执行源查询失败: %w", err)
+	}
+
+	ctx := sourceQuerySyncContext{
+		TableName:        tableName,
+		TargetSchema:     targetSchema,
+		TargetTable:      targetTable,
+		TargetQueryTable: targetQueryTable,
+		TargetType:       targetType,
+		TargetCols:       targetCols,
+		SourceRows:       sourceRows,
+		TargetRows:       make([]map[string]interface{}, 0),
+	}
+
+	if requirePK {
+		pkColumn, err := resolveSinglePKColumn(targetCols)
+		if err != nil {
+			return sourceQuerySyncContext{}, err
+		}
+		ctx.PKColumn = pkColumn
+	}
+
+	if needTargetRows {
+		targetRows, _, err := targetDB.Query(fmt.Sprintf("SELECT * FROM %s", quoteQualifiedIdentByType(targetType, targetQueryTable)))
+		if err != nil {
+			return sourceQuerySyncContext{}, fmt.Errorf("读取目标表失败: %w", err)
+		}
+		ctx.TargetRows = targetRows
+	}
+
+	return ctx, nil
+}
+
+func diffRowsByPK(pkCol string, sourceRows, targetRows []map[string]interface{}) ([]map[string]interface{}, []connection.UpdateRow, []map[string]interface{}, int) {
+	targetMap := make(map[string]map[string]interface{}, len(targetRows))
+	for _, row := range targetRows {
+		if row[pkCol] == nil {
+			continue
+		}
+		pkVal := strings.TrimSpace(fmt.Sprintf("%v", row[pkCol]))
+		if pkVal == "" || pkVal == "<nil>" {
+			continue
+		}
+		targetMap[pkVal] = row
+	}
+
+	sourcePKSet := make(map[string]struct{}, len(sourceRows))
+	inserts := make([]map[string]interface{}, 0)
+	updates := make([]connection.UpdateRow, 0)
+	same := 0
+	for _, sourceRow := range sourceRows {
+		if sourceRow[pkCol] == nil {
+			continue
+		}
+		pkVal := strings.TrimSpace(fmt.Sprintf("%v", sourceRow[pkCol]))
+		if pkVal == "" || pkVal == "<nil>" {
+			continue
+		}
+		sourcePKSet[pkVal] = struct{}{}
+		if targetRow, exists := targetMap[pkVal]; exists {
+			changes := make(map[string]interface{})
+			for key, value := range sourceRow {
+				if fmt.Sprintf("%v", value) != fmt.Sprintf("%v", targetRow[key]) {
+					changes[key] = value
+				}
+			}
+			if len(changes) == 0 {
+				same++
+				continue
+			}
+			updates = append(updates, connection.UpdateRow{
+				Keys:   map[string]interface{}{pkCol: sourceRow[pkCol]},
+				Values: changes,
+			})
+			continue
+		}
+		inserts = append(inserts, sourceRow)
+	}
+
+	deletes := make([]map[string]interface{}, 0)
+	for pkVal, row := range targetMap {
+		if _, exists := sourcePKSet[pkVal]; exists {
+			continue
+		}
+		deletes = append(deletes, map[string]interface{}{pkCol: row[pkCol]})
+	}
+	return inserts, updates, deletes, same
+}
+
+func buildTargetColumnSet(cols []connection.ColumnDefinition) map[string]struct{} {
+	targetColSet := make(map[string]struct{}, len(cols))
+	for _, col := range cols {
+		lowerName := strings.ToLower(strings.TrimSpace(col.Name))
+		if lowerName == "" {
+			continue
+		}
+		targetColSet[lowerName] = struct{}{}
+	}
+	return targetColSet
+}
+
+func applyQuerySourceColumnFilter(changeSet connection.ChangeSet, targetCols []connection.ColumnDefinition) connection.ChangeSet {
+	targetColSet := buildTargetColumnSet(targetCols)
+	changeSet.Inserts = filterInsertRows(changeSet.Inserts, targetColSet)
+	changeSet.Updates = filterUpdateRows(changeSet.Updates, targetColSet)
+	return changeSet
+}
+
+func (s *SyncEngine) analyzeSourceQuery(config SyncConfig) SyncAnalyzeResult {
+	result := SyncAnalyzeResult{Success: true, Tables: []TableDiffSummary{}}
+	tableName, err := validateSourceQuerySyncConfig(config)
+	if err != nil {
+		return SyncAnalyzeResult{Success: false, Message: err.Error()}
+	}
+
+	totalTables := 1
+	s.progress(config.JobID, 0, totalTables, tableName, "差异分析开始")
+
+	sourceDB, err := newSyncDatabase(config.SourceConfig.Type)
+	if err != nil {
+		return SyncAnalyzeResult{Success: false, Message: "初始化源数据库驱动失败: " + err.Error()}
+	}
+	targetDB, err := newSyncDatabase(config.TargetConfig.Type)
+	if err != nil {
+		return SyncAnalyzeResult{Success: false, Message: "初始化目标数据库驱动失败: " + err.Error()}
+	}
+
+	if err := sourceDB.Connect(config.SourceConfig); err != nil {
+		return SyncAnalyzeResult{Success: false, Message: "源数据库连接失败: " + err.Error()}
+	}
+	defer sourceDB.Close()
+
+	if err := targetDB.Connect(config.TargetConfig); err != nil {
+		return SyncAnalyzeResult{Success: false, Message: "目标数据库连接失败: " + err.Error()}
+	}
+	defer targetDB.Close()
+
+	summary := TableDiffSummary{
+		Table:   tableName,
+		CanSync: false,
+	}
+	ctx, err := loadSourceQuerySyncContext(config, sourceDB, targetDB, true, true)
+	if err != nil {
+		summary.Message = err.Error()
+		result.Tables = append(result.Tables, summary)
+		result.Message = "已完成 1 个目标表的差异分析"
+		s.progress(config.JobID, totalTables, totalTables, tableName, "差异分析完成")
+		return result
+	}
+
+	inserts, updates, deletes, same := diffRowsByPK(ctx.PKColumn, ctx.SourceRows, ctx.TargetRows)
+	summary.CanSync = true
+	summary.PKColumn = ctx.PKColumn
+	summary.Inserts = len(inserts)
+	summary.Updates = len(updates)
+	summary.Deletes = len(deletes)
+	summary.Same = same
+	summary.TargetTableExists = true
+	summary.Message = "SQL 结果集差异分析完成"
+	result.Tables = append(result.Tables, summary)
+	result.Message = "已完成 1 个目标表的差异分析"
+	s.progress(config.JobID, totalTables, totalTables, tableName, "差异分析完成")
+	return result
+}
+
+func (s *SyncEngine) previewSourceQuery(config SyncConfig, limit int) (TableDiffPreview, error) {
+	sourceDB, err := newSyncDatabase(config.SourceConfig.Type)
+	if err != nil {
+		return TableDiffPreview{}, fmt.Errorf("初始化源数据库驱动失败: %w", err)
+	}
+	targetDB, err := newSyncDatabase(config.TargetConfig.Type)
+	if err != nil {
+		return TableDiffPreview{}, fmt.Errorf("初始化目标数据库驱动失败: %w", err)
+	}
+
+	if err := sourceDB.Connect(config.SourceConfig); err != nil {
+		return TableDiffPreview{}, fmt.Errorf("源数据库连接失败: %w", err)
+	}
+	defer sourceDB.Close()
+
+	if err := targetDB.Connect(config.TargetConfig); err != nil {
+		return TableDiffPreview{}, fmt.Errorf("目标数据库连接失败: %w", err)
+	}
+	defer targetDB.Close()
+
+	ctx, err := loadSourceQuerySyncContext(config, sourceDB, targetDB, true, true)
+	if err != nil {
+		return TableDiffPreview{}, err
+	}
+
+	inserts, updates, deletes, _ := diffRowsByPK(ctx.PKColumn, ctx.SourceRows, ctx.TargetRows)
+	out := TableDiffPreview{
+		Table:        ctx.TableName,
+		PKColumn:     ctx.PKColumn,
+		ColumnTypes:  make(map[string]string, len(ctx.TargetCols)),
+		SchemaSummary: "SQL 结果集同步预览",
+		TotalInserts: len(inserts),
+		TotalUpdates: len(updates),
+		TotalDeletes: len(deletes),
+		Inserts:      make([]PreviewRow, 0, minInt(limit, len(inserts))),
+		Updates:      make([]PreviewUpdateRow, 0, minInt(limit, len(updates))),
+		Deletes:      make([]PreviewRow, 0, minInt(limit, len(deletes))),
+	}
+	for _, col := range ctx.TargetCols {
+		name := strings.ToLower(strings.TrimSpace(col.Name))
+		typ := strings.TrimSpace(col.Type)
+		if name == "" || typ == "" {
+			continue
+		}
+		out.ColumnTypes[name] = typ
+	}
+
+	for idx, row := range inserts {
+		if idx >= limit {
+			break
+		}
+		pk := strings.TrimSpace(fmt.Sprintf("%v", row[ctx.PKColumn]))
+		out.Inserts = append(out.Inserts, PreviewRow{PK: pk, Row: row})
+	}
+	for idx, update := range updates {
+		if idx >= limit {
+			break
+		}
+		pk := strings.TrimSpace(fmt.Sprintf("%v", update.Keys[ctx.PKColumn]))
+		targetRow := map[string]interface{}{}
+		for _, row := range ctx.TargetRows {
+			if fmt.Sprintf("%v", row[ctx.PKColumn]) == fmt.Sprintf("%v", update.Keys[ctx.PKColumn]) {
+				targetRow = row
+				break
+			}
+		}
+		sourceRow := map[string]interface{}{}
+		for _, row := range ctx.SourceRows {
+			if fmt.Sprintf("%v", row[ctx.PKColumn]) == fmt.Sprintf("%v", update.Keys[ctx.PKColumn]) {
+				sourceRow = row
+				break
+			}
+		}
+		changedColumns := make([]string, 0, len(update.Values))
+		for column := range update.Values {
+			changedColumns = append(changedColumns, column)
+		}
+		out.Updates = append(out.Updates, PreviewUpdateRow{
+			PK:             pk,
+			ChangedColumns: changedColumns,
+			Source:         sourceRow,
+			Target:         targetRow,
+		})
+	}
+	for idx, row := range deletes {
+		if idx >= limit {
+			break
+		}
+		pk := strings.TrimSpace(fmt.Sprintf("%v", row[ctx.PKColumn]))
+		out.Deletes = append(out.Deletes, PreviewRow{PK: pk, Row: row})
+	}
+	return out, nil
+}
+
+func (s *SyncEngine) runSourceQuerySync(config SyncConfig) SyncResult {
+	result := SyncResult{Success: true, Logs: []string{}}
+	tableName, err := validateSourceQuerySyncConfig(config)
+	if err != nil {
+		return s.fail(config.JobID, 1, result, err.Error())
+	}
+
+	totalTables := 1
+	tableMode := normalizeSyncMode(config.Mode)
+	s.progress(config.JobID, 0, totalTables, tableName, "开始同步")
+	s.appendLog(config.JobID, &result, "info", fmt.Sprintf("同步来源：SQL 结果集 -> 目标表 %s；模式：%s", tableName, tableMode))
+
+	sourceDB, err := newSyncDatabase(config.SourceConfig.Type)
+	if err != nil {
+		return s.fail(config.JobID, totalTables, result, "初始化源数据库驱动失败: "+err.Error())
+	}
+	targetDB, err := newSyncDatabase(config.TargetConfig.Type)
+	if err != nil {
+		return s.fail(config.JobID, totalTables, result, "初始化目标数据库驱动失败: "+err.Error())
+	}
+
+	if err := sourceDB.Connect(config.SourceConfig); err != nil {
+		return s.fail(config.JobID, totalTables, result, "源数据库连接失败: "+err.Error())
+	}
+	defer sourceDB.Close()
+
+	if err := targetDB.Connect(config.TargetConfig); err != nil {
+		return s.fail(config.JobID, totalTables, result, "目标数据库连接失败: "+err.Error())
+	}
+	defer targetDB.Close()
+
+	opts := TableOptions{Insert: true, Update: true, Delete: false}
+	if config.TableOptions != nil {
+		if configured, ok := config.TableOptions[tableName]; ok {
+			opts = configured
+		}
+	}
+	if !opts.Insert && !opts.Update && !opts.Delete {
+		s.appendLog(config.JobID, &result, "info", fmt.Sprintf("目标表 %s 未勾选任何操作，已跳过", tableName))
+		s.progress(config.JobID, totalTables, totalTables, tableName, "同步完成")
+		return result
+	}
+
+	needTargetRows := tableMode == "insert_update"
+	requirePK := tableMode == "insert_update"
+	ctx, err := loadSourceQuerySyncContext(config, sourceDB, targetDB, needTargetRows, requirePK)
+	if err != nil {
+		return s.fail(config.JobID, totalTables, result, err.Error())
+	}
+
+	inserts := make([]map[string]interface{}, 0)
+	updates := make([]connection.UpdateRow, 0)
+	deletes := make([]map[string]interface{}, 0)
+	if tableMode == "insert_update" {
+		inserts, updates, deletes, _ = diffRowsByPK(ctx.PKColumn, ctx.SourceRows, ctx.TargetRows)
+		inserts = filterRowsByPKSelection(ctx.PKColumn, inserts, opts.Insert, opts.SelectedInsertPKs)
+		updates = filterUpdatesByPKSelection(ctx.PKColumn, updates, opts.Update, opts.SelectedUpdatePKs)
+		deletes = filterRowsByPKSelection(ctx.PKColumn, deletes, opts.Delete, opts.SelectedDeletePKs)
+	} else {
+		inserts = ctx.SourceRows
+		if !opts.Insert {
+			inserts = nil
+		}
+		if tableMode == "full_overwrite" {
+			s.progress(config.JobID, 0, totalTables, tableName, "清空目标表")
+			clearSQL := fmt.Sprintf("DELETE FROM %s", quoteQualifiedIdentByType(ctx.TargetType, ctx.TargetQueryTable))
+			if ctx.TargetType == "mysql" {
+				clearSQL = fmt.Sprintf("TRUNCATE TABLE %s", quoteQualifiedIdentByType(ctx.TargetType, ctx.TargetQueryTable))
+			}
+			if _, err := targetDB.Exec(clearSQL); err != nil {
+				return s.fail(config.JobID, totalTables, result, "清空目标表失败: "+err.Error())
+			}
+		}
+	}
+
+	changeSet := applyQuerySourceColumnFilter(connection.ChangeSet{
+		Inserts: inserts,
+		Updates: updates,
+		Deletes: deletes,
+	}, ctx.TargetCols)
+	if len(changeSet.Inserts) == 0 && len(changeSet.Updates) == 0 && len(changeSet.Deletes) == 0 {
+		s.appendLog(config.JobID, &result, "info", "SQL 结果集与目标表一致，无需应用变更")
+		result.TablesSynced++
+		s.progress(config.JobID, totalTables, totalTables, tableName, "同步完成")
+		return result
+	}
+
+	applyTableName := ctx.TargetTable
+	switch ctx.TargetType {
+	case "postgres", "kingbase", "highgo", "vastbase", "sqlserver":
+		applyTableName = ctx.TargetQueryTable
+	}
+	applier, ok := targetDB.(db.BatchApplier)
+	if !ok {
+		return s.fail(config.JobID, totalTables, result, "目标驱动不支持应用数据变更 (ApplyChanges)")
+	}
+	if err := applier.ApplyChanges(applyTableName, changeSet); err != nil {
+		return s.fail(config.JobID, totalTables, result, "应用 SQL 结果集变更失败: "+err.Error())
+	}
+
+	result.TablesSynced++
+	result.RowsInserted += len(changeSet.Inserts)
+	result.RowsUpdated += len(changeSet.Updates)
+	result.RowsDeleted += len(changeSet.Deletes)
+	s.appendLog(config.JobID, &result, "info", fmt.Sprintf("SQL 结果集同步完成：插入=%d 更新=%d 删除=%d", len(changeSet.Inserts), len(changeSet.Updates), len(changeSet.Deletes)))
+	s.progress(config.JobID, totalTables, totalTables, tableName, "同步完成")
+	return result
+}
+
+func minInt(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
diff --git a/internal/sync/source_query_sync_test.go b/internal/sync/source_query_sync_test.go
new file mode 100644
index 0000000..59ad071
--- /dev/null
+++ b/internal/sync/source_query_sync_test.go
@@ -0,0 +1,177 @@
+package sync
+
+import (
+	"GoNavi-Wails/internal/connection"
+	"GoNavi-Wails/internal/db"
+	"reflect"
+	"testing"
+)
+
+type fakeQuerySyncTargetDB struct {
+	fakeMigrationDB
+	appliedTable   string
+	appliedChanges connection.ChangeSet
+}
+
+func (f *fakeQuerySyncTargetDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
+	f.appliedTable = tableName
+	f.appliedChanges = changes
+	return nil
+}
+
+var _ db.BatchApplier = (*fakeQuerySyncTargetDB)(nil)
+
+func TestAnalyze_SourceQueryUsesQueryResultAsSourceDataset(t *testing.T) {
+	sourceDB := &fakeMigrationDB{
+		columns: map[string][]connection.ColumnDefinition{
+			"app.users": {
+				{Name: "id", Type: "bigint", Nullable: "NO", Key: "PRI"},
+				{Name: "name", Type: "varchar(64)", Nullable: "YES"},
+			},
+		},
+		queryData: map[string][]map[string]interface{}{
+			"SELECT id, name FROM active_users": {
+				{"id": 1, "name": "Alice New"},
+				{"id": 2, "name": "Bob"},
+			},
+		},
+	}
+	targetDB := &fakeQuerySyncTargetDB{
+		fakeMigrationDB: fakeMigrationDB{
+			columns: map[string][]connection.ColumnDefinition{
+				"app.users": {
+					{Name: "id", Type: "bigint", Nullable: "NO", Key: "PRI"},
+					{Name: "name", Type: "varchar(64)", Nullable: "YES"},
+				},
+			},
+			queryData: map[string][]map[string]interface{}{
+				"SELECT * FROM `app`.`users`": {
+					{"id": 1, "name": "Alice Old"},
+					{"id": 3, "name": "Carol"},
+				},
+			},
+		},
+	}
+
+	oldFactory := newSyncDatabase
+	defer func() { newSyncDatabase = oldFactory }()
+	callCount := 0
+	newSyncDatabase = func(dbType string) (db.Database, error) {
+		callCount++
+		if callCount == 1 {
+			return sourceDB, nil
+		}
+		return targetDB, nil
+	}
+
+	engine := NewSyncEngine(Reporter{})
+	result := engine.Analyze(SyncConfig{
+		SourceConfig: connection.ConnectionConfig{Type: "mysql", Database: "app"},
+		TargetConfig: connection.ConnectionConfig{Type: "mysql", Database: "app"},
+		Tables:       []string{"users"},
+		Mode:         "insert_update",
+		SourceQuery:  "SELECT id, name FROM active_users",
+	})
+
+	if !result.Success {
+		t.Fatalf("Analyze 返回失败: %+v", result)
+	}
+	if len(result.Tables) != 1 {
+		t.Fatalf("expected one table summary, got %d", len(result.Tables))
+	}
+
+	summary := result.Tables[0]
+	if summary.PKColumn != "id" {
+		t.Fatalf("expected PKColumn=id, got %q", summary.PKColumn)
+	}
+	if !summary.CanSync {
+		t.Fatalf("expected summary can sync, got %+v", summary)
+	}
+	if summary.Inserts != 1 || summary.Updates != 1 || summary.Deletes != 1 {
+		t.Fatalf("unexpected diff summary: %+v", summary)
+	}
+}
+
+func TestRunSync_SourceQueryAppliesDiffAgainstTargetTable(t *testing.T) {
+	sourceDB := &fakeMigrationDB{
+		columns: map[string][]connection.ColumnDefinition{
+			"app.users": {
+				{Name: "id", Type: "bigint", Nullable: "NO", Key: "PRI"},
+				{Name: "name", Type: "varchar(64)", Nullable: "YES"},
+			},
+		},
+		queryData: map[string][]map[string]interface{}{
+			"SELECT id, name FROM active_users": {
+				{"id": 1, "name": "Alice New"},
+				{"id": 2, "name": "Bob"},
+			},
+		},
+	}
+	targetDB := &fakeQuerySyncTargetDB{
+		fakeMigrationDB: fakeMigrationDB{
+			columns: map[string][]connection.ColumnDefinition{
+				"app.users": {
+					{Name: "id", Type: "bigint", Nullable: "NO", Key: "PRI"},
+					{Name: "name", Type: "varchar(64)", Nullable: "YES"},
+				},
+			},
+			queryData: map[string][]map[string]interface{}{
+				"SELECT * FROM `app`.`users`": {
+					{"id": 1, "name": "Alice Old"},
+					{"id": 3, "name": "Carol"},
+				},
+			},
+		},
+	}
+
+	oldFactory := newSyncDatabase
+	defer func() { newSyncDatabase = oldFactory }()
+	callCount := 0
+	newSyncDatabase = func(dbType string) (db.Database, error) {
+		callCount++
+		if callCount == 1 {
+			return sourceDB, nil
+		}
+		return targetDB, nil
+	}
+
+	engine := NewSyncEngine(Reporter{})
+	result := engine.RunSync(SyncConfig{
+		SourceConfig: connection.ConnectionConfig{Type: "mysql", Database: "app"},
+		TargetConfig: connection.ConnectionConfig{Type: "mysql", Database: "app"},
+		Tables:       []string{"users"},
+		Mode:         "insert_update",
+		SourceQuery:  "SELECT id, name FROM active_users",
+		TableOptions: map[string]TableOptions{
+			"users": {Insert: true, Update: true, Delete: true},
+		},
+	})
+
+	if !result.Success {
+		t.Fatalf("RunSync 返回失败: %+v", result)
+	}
+	if result.TablesSynced != 1 || result.RowsInserted != 1 || result.RowsUpdated != 1 || result.RowsDeleted != 1 {
+		t.Fatalf("unexpected sync result: %+v", result)
+	}
+	if targetDB.appliedTable != "users" {
+		t.Fatalf("expected applied table users, got %q", targetDB.appliedTable)
+	}
+
+	wantInserts := []map[string]interface{}{{"id": 2, "name": "Bob"}}
+	if !reflect.DeepEqual(targetDB.appliedChanges.Inserts, wantInserts) {
+		t.Fatalf("unexpected inserts: got=%v want=%v", targetDB.appliedChanges.Inserts, wantInserts)
+	}
+
+	wantUpdates := []connection.UpdateRow{{
+		Keys:   map[string]interface{}{"id": 1},
+		Values: map[string]interface{}{"name": "Alice New"},
+	}}
+	if !reflect.DeepEqual(targetDB.appliedChanges.Updates, wantUpdates) {
+		t.Fatalf("unexpected updates: got=%v want=%v", targetDB.appliedChanges.Updates, wantUpdates)
+	}
+
+	wantDeletes := []map[string]interface{}{{"id": 3}}
+	if !reflect.DeepEqual(targetDB.appliedChanges.Deletes, wantDeletes) {
+		t.Fatalf("unexpected deletes: got=%v want=%v", targetDB.appliedChanges.Deletes, wantDeletes)
+	}
+}
diff --git a/internal/sync/sync_engine.go b/internal/sync/sync_engine.go
index 15b5aaa..fa9152f 100644
--- a/internal/sync/sync_engine.go
+++ b/internal/sync/sync_engine.go
@@ -15,6 +15,7 @@ type SyncConfig struct {
 	SourceConfig        connection.ConnectionConfig `json:"sourceConfig"`
 	TargetConfig        connection.ConnectionConfig `json:"targetConfig"`
 	Tables              []string                    `json:"tables"`
+	SourceQuery         string                      `json:"sourceQuery,omitempty"`
 	Content             string                      `json:"content,omitempty"` // "data", "schema", "both"
 	Mode                string                      `json:"mode"`              // "insert_update", "insert_only", "full_overwrite"
 	JobID               string                      `json:"jobId,omitempty"`
@@ -54,6 +55,9 @@ func (s *SyncEngine) RunSync(config SyncConfig) SyncResult {
 	if isMongoToRedisKeyspacePair(config) {
 		return s.runMongoToRedisSync(config, result)
 	}
+	if hasSourceQuery(config) {
+		return s.runSourceQuerySync(config)
+	}
 
 	totalTables := len(config.Tables)
 	s.progress(config.JobID, 0, totalTables, "", "开始同步")