✨ feat(query): 新建查询继承当前表上下文

frontend/src/App.tsx

@@ -102,6 +102,8 @@ import {
 import { downloadBrowserTextFile } from './utils/browserFileTransfer';
 import { buildDataSyncWorkbenchTab } from './utils/dataSyncTab';
 import { buildSqlAuditWorkbenchTab } from './utils/sqlAuditTab';
+import { resolveDataSourceType } from './utils/dataSourceCapabilities';
+import { buildContextualNewQueryTemplate } from './utils/objectQueryTemplates';
 import {
   extractCustomThemeAntTokens,
 } from './utils/customTheme';
@@ -2723,6 +2725,7 @@ function App() {
   const handleNewQuery = useCallback(() => {
       let connId = '';
       let db = '';
+      let tableName = '';
 
       // Priority: Active Tab Context (if connection still valid) > Sidebar Selection (activeContext)
       if (activeTabId) {
@@ -2730,6 +2733,9 @@ function App() {
           if (currentTab && currentTab.connectionId && connections.some(c => c.id === currentTab.connectionId)) {
               connId = currentTab.connectionId;
               db = currentTab.dbName || '';
+              if (currentTab.type === 'table' || currentTab.type === 'design') {
+                  tableName = String(currentTab.tableName || '').trim();
+              }
           }
       }
 
@@ -2739,15 +2745,24 @@ function App() {
           db = activeContext.dbName || '';
       }
 
+      const connection = connections.find(c => c.id === connId);
+      const contextualQuery = tableName && connection
+          ? buildContextualNewQueryTemplate({
+              dbType: resolveDataSourceType(connection.config),
+              tableName,
+              customTemplate: appearance.newQuerySqlTemplate,
+          })
+          : null;
+
       addTab({
           id: `query-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`,
           title: t('query.new'),
           type: 'query',
           connectionId: connId,
           dbName: db,
-          query: ''
+          query: contextualQuery ?? ''
       });
-  }, [activeTabId, tabs, connections, activeContext, addTab, t]);
+  }, [activeTabId, tabs, connections, activeContext, addTab, appearance.newQuerySqlTemplate, t]);
 
   const switchActiveTabByOffset = useCallback((offset: 1 | -1) => {
       if (tabs.length < 2) return;

frontend/src/utils/objectQueryTemplates.test.ts

@@ -9,12 +9,47 @@ vi.mock('../../wailsjs/go/app/App', () => ({
 }));
 
 import {
+  buildContextualNewQueryTemplate,
   buildTableSelectQuery,
   extractTableSelectColumnNames,
   isElasticsearchDbType,
   resolveTableSelectQuery,
 } from './objectQueryTemplates';
 
+describe('buildContextualNewQueryTemplate', () => {
+  it('builds a dialect-aware select for the active table with the default template', () => {
+    expect(buildContextualNewQueryTemplate({
+      dbType: 'mysql',
+      tableName: 'Order Items',
+      customTemplate: null,
+    })).toBe('SELECT * FROM `Order Items`;');
+  });
+
+  it('appends the active table when a custom template ends with FROM', () => {
+    expect(buildContextualNewQueryTemplate({
+      dbType: 'postgres',
+      tableName: 'public.OrderItems',
+      customTemplate: 'SELECT id, total FROM ',
+    })).toBe('SELECT id, total FROM public."OrderItems"');
+  });
+
+  it('preserves custom templates that do not expose a table insertion point', () => {
+    expect(buildContextualNewQueryTemplate({
+      dbType: 'mysql',
+      tableName: 'users',
+      customTemplate: 'SELECT CURRENT_TIMESTAMP;',
+    })).toBeNull();
+  });
+
+  it('builds the native query format for an active Elasticsearch index', () => {
+    expect(buildContextualNewQueryTemplate({
+      dbType: 'elasticsearch',
+      tableName: 'orders-v1',
+      customTemplate: null,
+    })).toBe('GET /orders-v1/_search\n{\n  "query": {\n    "match_all": {}\n  }\n}\n');
+  });
+});
+
 describe('buildTableSelectQuery', () => {
   it('quotes uppercase postgres table names in new query templates', () => {
     expect(buildTableSelectQuery('postgres', 'public.MyTable')).toBe('SELECT * FROM public."MyTable";');

frontend/src/utils/objectQueryTemplates.ts

@@ -59,6 +59,34 @@ export const buildTableSelectQuery = (
   return `SELECT\n  ${selectList}\nFROM ${quotedTable}${limitSuffix};`;
 };
 
+type BuildContextualNewQueryTemplateOptions = {
+  dbType: string;
+  tableName: string;
+  customTemplate?: string | null;
+};
+
+/**
+ * Build the initial query for a new tab opened while a table-like data tab is active.
+ * A custom template is only augmented when it explicitly ends at a FROM insertion point.
+ */
+export const buildContextualNewQueryTemplate = ({
+  dbType,
+  tableName,
+  customTemplate,
+}: BuildContextualNewQueryTemplateOptions): string | null => {
+  const normalizedTableName = String(tableName || '').trim();
+  if (!normalizedTableName) return null;
+  if (isElasticsearchDbType(dbType) || customTemplate === null || customTemplate === undefined) {
+    return buildTableSelectQuery(dbType, normalizedTableName);
+  }
+
+  const template = String(customTemplate)
+    .replace(/\r\n/g, '\n')
+    .replace(/\r/g, '\n');
+  if (!/\bfrom\s*$/i.test(template)) return null;
+  return `${template}${quoteQualifiedIdent(dbType, normalizedTableName)}`;
+};
+
 type ResolveTableSelectQueryOptions = {
   dbType: string;
   tableName: string;