diff --git a/frontend/src/components/DataGrid.ddl.test.tsx b/frontend/src/components/DataGrid.ddl.test.tsx
index 3a96c71..7625aff 100644
--- a/frontend/src/components/DataGrid.ddl.test.tsx
+++ b/frontend/src/components/DataGrid.ddl.test.tsx
@@ -8,7 +8,7 @@ import DataGrid, {
   GONAVI_ROW_KEY,
   hasDataGridVirtualEditRenderVersionChanged,
 } from './DataGrid';
-import { ORACLE_ROWID_LOCATOR_COLUMN } from '../utils/rowLocator';
+import { DUCKDB_ROWID_LOCATOR_COLUMN, ORACLE_ROWID_LOCATOR_COLUMN } from '../utils/rowLocator';
 
 const storeState = vi.hoisted(() => ({
   connections: [
@@ -415,6 +415,37 @@ describe('DataGrid commit change set', () => {
     });
   });
 
+  it('uses hidden DuckDB rowid only as locator and excludes it from update values', () => {
+    const result = buildDataGridCommitChangeSet({
+      addedRows: [],
+      modifiedRows: {
+        'row-1': { [GONAVI_ROW_KEY]: 'row-1', NAME: 'new-name', [DUCKDB_ROWID_LOCATOR_COLUMN]: 18 },
+      },
+      deletedRowKeys: new Set(),
+      data: [{ [GONAVI_ROW_KEY]: 'row-1', NAME: 'old-name', [DUCKDB_ROWID_LOCATOR_COLUMN]: 17 }],
+      editLocator: {
+        strategy: 'duckdb-rowid',
+        columns: ['rowid'],
+        valueColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+        hiddenColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+        readOnly: false,
+      },
+      visibleColumnNames: ['NAME'],
+      rowKeyToString,
+      normalizeCommitCellValue: normalizeValue,
+      shouldCommitColumn: commitColumnGuard,
+    });
+
+    expect(result).toEqual({
+      ok: true,
+      changes: {
+        inserts: [],
+        updates: [{ keys: { rowid: 17 }, values: { NAME: 'new-name' } }],
+        deletes: [],
+      },
+    });
+  });
+
   it('commits only writable result columns and maps aliases back to table columns', () => {
     const result = buildDataGridCommitChangeSet({
       addedRows: [],
diff --git a/frontend/src/components/DataViewer.primary-key.test.tsx b/frontend/src/components/DataViewer.primary-key.test.tsx
index cf5fdc3..7bbd8c0 100644
--- a/frontend/src/components/DataViewer.primary-key.test.tsx
+++ b/frontend/src/components/DataViewer.primary-key.test.tsx
@@ -4,7 +4,7 @@ import { act, create, type ReactTestRenderer } from 'react-test-renderer';
 import { beforeEach, describe, expect, it, vi } from 'vitest';
 
 import type { TabData } from '../types';
-import { ORACLE_ROWID_LOCATOR_COLUMN } from '../utils/rowLocator';
+import { DUCKDB_ROWID_LOCATOR_COLUMN, ORACLE_ROWID_LOCATOR_COLUMN } from '../utils/rowLocator';
 import DataViewer from './DataViewer';
 
 const storeState = vi.hoisted(() => ({
@@ -207,6 +207,39 @@ describe('DataViewer safe editing locator', () => {
     renderer.unmount();
   });
 
+  it('uses hidden DuckDB rowid when no primary or unique key is available', async () => {
+    storeState.connections[0].config.type = 'duckdb';
+    storeState.connections[0].config.database = 'main';
+    backendApp.DBGetColumns.mockResolvedValue({
+      success: true,
+      data: [{ name: 'name', key: '' }],
+    });
+    backendApp.DBGetIndexes.mockResolvedValue({
+      success: true,
+      data: [],
+    });
+    backendApp.DBQuery.mockResolvedValue({
+      success: true,
+      fields: ['name', DUCKDB_ROWID_LOCATOR_COLUMN],
+      data: [{ name: 'launch', [DUCKDB_ROWID_LOCATOR_COLUMN]: 17 }],
+    });
+
+    const renderer = await renderAndReload(createTab({ id: 'tab-duckdb-rowid', dbName: 'main', tableName: 'main.events', title: 'events' }));
+
+    expect(dataGridState.latestProps?.pkColumns).toEqual([]);
+    expect(dataGridState.latestProps?.editLocator).toMatchObject({
+      strategy: 'duckdb-rowid',
+      columns: ['rowid'],
+      valueColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+      hiddenColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+      readOnly: false,
+    });
+    expect(dataGridState.latestProps?.readOnly).toBe(false);
+    expect(messageApi.warning).not.toHaveBeenCalled();
+    expect(backendApp.DBQuery.mock.calls.some((call: any[]) => String(call[2]).includes(`rowid AS "${DUCKDB_ROWID_LOCATOR_COLUMN}"`))).toBe(true);
+    renderer.unmount();
+  });
+
   it('enables MongoDB table preview editing through the _id locator', async () => {
     storeState.connections[0].config.type = 'mongodb';
     storeState.connections[0].config.database = 'app';
diff --git a/frontend/src/components/DataViewer.tsx b/frontend/src/components/DataViewer.tsx
index 6bbc59a..bbe5817 100644
--- a/frontend/src/components/DataViewer.tsx
+++ b/frontend/src/components/DataViewer.tsx
@@ -16,6 +16,7 @@ import {
   validateQuickWhereCondition,
 } from '../utils/dataGridWhereFilter';
 import {
+  DUCKDB_ROWID_LOCATOR_COLUMN,
   ORACLE_ROWID_LOCATOR_COLUMN,
   resolveEditRowLocator,
   type EditRowLocator,
@@ -163,13 +164,18 @@ const buildDataViewerBaseSelectSQL = (
   locator?: EditRowLocator,
 ): string => {
   const quotedTableName = quoteQualifiedIdent(dbType, tableName);
-  if (locator?.strategy !== 'oracle-rowid') {
+  if (locator?.strategy !== 'oracle-rowid' && locator?.strategy !== 'duckdb-rowid') {
     return `SELECT * FROM ${quotedTableName} ${whereSQL}`;
   }
 
   const alias = 'gonavi_row_source';
-  const rowIDAlias = quoteIdentPart(dbType, ORACLE_ROWID_LOCATOR_COLUMN);
-  return `SELECT ${alias}.*, ${alias}.ROWID AS ${rowIDAlias} FROM ${quotedTableName} ${alias} ${whereSQL}`;
+  if (locator?.strategy === 'duckdb-rowid') {
+    const duckdbRowIDAlias = quoteIdentPart(dbType, DUCKDB_ROWID_LOCATOR_COLUMN);
+    return `SELECT ${alias}.*, ${alias}.rowid AS ${duckdbRowIDAlias} FROM ${quotedTableName} ${alias} ${whereSQL}`;
+  }
+
+  const oracleRowIDAlias = quoteIdentPart(dbType, ORACLE_ROWID_LOCATOR_COLUMN);
+  return `SELECT ${alias}.*, ${alias}.ROWID AS ${oracleRowIDAlias} FROM ${quotedTableName} ${alias} ${whereSQL}`;
 };
 
 const resolveDuckDBSchemaAndTable = (dbName: string, tableName: string) => {
@@ -575,13 +581,16 @@ const DataViewer: React.FC<{ tab: TabData; isActive?: boolean }> = React.memo(({
                     const resultColumns = getTableColumnNames(columnDefs);
                     const locatorColumns = isOracleLikeDialect(dbType)
                         ? [...resultColumns, ORACLE_ROWID_LOCATOR_COLUMN]
-                        : resultColumns;
+                        : (String(dbType || '').trim().toLowerCase() === 'duckdb'
+                            ? [...resultColumns, DUCKDB_ROWID_LOCATOR_COLUMN]
+                            : resultColumns);
                     let nextLocator = resolveEditRowLocator({
                         dbType,
                         resultColumns: locatorColumns,
                         primaryKeys,
                         indexes,
                         allowOracleRowID: true,
+                        allowDuckDBRowID: String(dbType || '').trim().toLowerCase() === 'duckdb',
                     });
 
                     if (nextLocator.readOnly && primaryKeys.length === 0 && !resIndexes?.success && !isOracleLikeDialect(dbType)) {
diff --git a/frontend/src/components/QueryEditor.external-sql-save.test.tsx b/frontend/src/components/QueryEditor.external-sql-save.test.tsx
index 5166d13..2b05f95 100644
--- a/frontend/src/components/QueryEditor.external-sql-save.test.tsx
+++ b/frontend/src/components/QueryEditor.external-sql-save.test.tsx
@@ -3387,6 +3387,52 @@ describe('QueryEditor external SQL save', () => {
     expect(messageApi.warning).not.toHaveBeenCalled();
   });
 
+  it('uses hidden DuckDB rowid when query results have no primary or unique key', async () => {
+    storeState.connections[0].config.type = 'duckdb';
+    storeState.connections[0].config.database = 'main';
+    backendApp.DBQueryMulti.mockResolvedValueOnce({
+      success: true,
+      data: [{ columns: ['NAME', '__gonavi_duckdb_rowid__'], rows: [{ NAME: 'launch', __gonavi_duckdb_rowid__: 17 }] }],
+    });
+    backendApp.DBGetColumns.mockResolvedValueOnce({
+      success: true,
+      data: [{ name: 'name', key: '' }],
+    });
+    backendApp.DBGetIndexes.mockResolvedValueOnce({
+      success: true,
+      data: [],
+    });
+
+    let renderer: ReactTestRenderer;
+    await act(async () => {
+      renderer = create(<QueryEditor tab={createTab({ dbName: 'main', query: 'SELECT NAME FROM main.events' })} />);
+    });
+
+    await act(async () => {
+      await findButton(renderer!, '运行').props.onClick();
+    });
+    await act(async () => {
+      await Promise.resolve();
+      await Promise.resolve();
+    });
+
+    expect(dataGridState.latestProps?.tableName).toBe('main.events');
+    expect(dataGridState.latestProps?.pkColumns).toEqual([]);
+    expect(dataGridState.latestProps?.editLocator).toMatchObject({
+      strategy: 'duckdb-rowid',
+      columns: ['rowid'],
+      valueColumns: ['__gonavi_duckdb_rowid__'],
+      hiddenColumns: ['__gonavi_duckdb_rowid__'],
+      writableColumns: {
+        NAME: 'name',
+      },
+      readOnly: false,
+    });
+    expect(dataGridState.latestProps?.readOnly).toBe(false);
+    expect(String(backendApp.DBQueryMulti.mock.calls[0][2])).toContain('rowid AS "__gonavi_duckdb_rowid__"');
+    expect(messageApi.warning).not.toHaveBeenCalled();
+  });
+
   it.each([
     'mysql',
     'mariadb',
diff --git a/frontend/src/components/QueryEditor.tsx b/frontend/src/components/QueryEditor.tsx
index c5190ea..ca4d316 100644
--- a/frontend/src/components/QueryEditor.tsx
+++ b/frontend/src/components/QueryEditor.tsx
@@ -24,7 +24,11 @@ import { splitSidebarQualifiedName } from '../utils/sidebarLocate';
 import { normalizeSidebarViewName } from '../utils/sidebarMetadata';
 import { SIDEBAR_SQL_EDITOR_DRAG_MIME, decodeSidebarSqlEditorDragPayload, hasSidebarSqlEditorDragPayload } from '../utils/sidebarSqlDrag';
 import { resolveUniqueKeyGroupsFromIndexes } from './dataGridCopyInsert';
-import { ORACLE_ROWID_LOCATOR_COLUMN, type EditRowLocator } from '../utils/rowLocator';
+import {
+    DUCKDB_ROWID_LOCATOR_COLUMN,
+    ORACLE_ROWID_LOCATOR_COLUMN,
+    type EditRowLocator,
+} from '../utils/rowLocator';
 import { getQueryTabDraft, hasQueryTabDraft, setQueryTabDraft, setSQLFileTabDraft } from '../utils/sqlFileTabDrafts';
 import {
     getColumnDefinitionKey,
@@ -579,6 +583,10 @@ const buildQueryRowIDExpression = (dbType: string, sourceAlias?: string): string
     `${sourceAlias ? `${sourceAlias}.` : ''}ROWID AS ${quoteIdentPart(dbType, ORACLE_ROWID_LOCATOR_COLUMN)}`
 );
 
+const buildDuckDBRowIDExpression = (dbType: string, sourceAlias?: string): string => (
+    `${sourceAlias ? `${sourceAlias}.` : ''}rowid AS ${quoteIdentPart(dbType, DUCKDB_ROWID_LOCATOR_COLUMN)}`
+);
+
 const escapeMetadataSqlLiteral = (raw: string): string => String(raw || '').replace(/'/g, "''");
 
 const quoteSqlServerDbIdentifier = (raw: string): string => `[${String(raw || '').replace(/]/g, ']]')}]`;
@@ -1834,6 +1842,7 @@ const resolveQueryLocatorPlan = async ({
         const appendExpressions: string[] = [];
         const hiddenColumns: string[] = [];
         let needsOracleRowIDExpression = false;
+        let needsDuckDBRowIDExpression = false;
 
         const buildColumnLocator = (strategy: 'primary-key' | 'unique-key', locatorColumns: string[]): EditRowLocator => {
             const valueColumns = locatorColumns.map((column, index) => {
@@ -1872,6 +1881,16 @@ const resolveQueryLocatorPlan = async ({
                     writableColumns,
                     readOnly: false,
                 };
+            } else if (String(dbType || '').trim().toLowerCase() === 'duckdb') {
+                needsDuckDBRowIDExpression = true;
+                plan.editLocator = {
+                    strategy: 'duckdb-rowid',
+                    columns: ['rowid'],
+                    valueColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+                    hiddenColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+                    writableColumns,
+                    readOnly: false,
+                };
             } else {
                 const reason = !resIndexes?.success
                     ? '无法加载唯一索引元数据，无法安全提交修改。'
@@ -1883,6 +1902,7 @@ const resolveQueryLocatorPlan = async ({
 
         const executableAppendExpressions = [
             ...(needsOracleRowIDExpression ? [buildQueryRowIDExpression(dbType)] : []),
+            ...(needsDuckDBRowIDExpression ? [buildDuckDBRowIDExpression(dbType)] : []),
             ...appendExpressions,
         ];
 
diff --git a/frontend/src/utils/rowLocator.test.ts b/frontend/src/utils/rowLocator.test.ts
index 5c0916d..d9e28d2 100644
--- a/frontend/src/utils/rowLocator.test.ts
+++ b/frontend/src/utils/rowLocator.test.ts
@@ -1,6 +1,7 @@
 import { describe, expect, it } from 'vitest';
 
 import {
+  DUCKDB_ROWID_LOCATOR_COLUMN,
   ORACLE_ROWID_LOCATOR_COLUMN,
   filterHiddenLocatorColumns,
   resolveEditRowLocator,
@@ -103,6 +104,20 @@ describe('resolveEditRowLocator', () => {
       readOnly: false,
     });
   });
+
+  it('uses DuckDB rowid when no primary or unique key is available', () => {
+    expect(resolveEditRowLocator({
+      dbType: 'duckdb',
+      resultColumns: ['name', DUCKDB_ROWID_LOCATOR_COLUMN],
+      allowDuckDBRowID: true,
+    })).toEqual({
+      strategy: 'duckdb-rowid',
+      columns: ['rowid'],
+      valueColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+      hiddenColumns: [DUCKDB_ROWID_LOCATOR_COLUMN],
+      readOnly: false,
+    });
+  });
 });
 
 describe('resolveRowLocatorValues', () => {
@@ -131,6 +146,19 @@ describe('resolveRowLocatorValues', () => {
       error: '定位列 EMAIL 的值为空，无法安全提交修改。',
     });
   });
+
+  it('extracts DuckDB rowid locator values from the original row', () => {
+    const locator = resolveEditRowLocator({
+      dbType: 'duckdb',
+      resultColumns: ['name', DUCKDB_ROWID_LOCATOR_COLUMN],
+      allowDuckDBRowID: true,
+    });
+
+    expect(resolveRowLocatorValues(locator, { name: 'launch', [DUCKDB_ROWID_LOCATOR_COLUMN]: 17 })).toEqual({
+      ok: true,
+      values: { rowid: 17 },
+    });
+  });
 });
 
 describe('filterHiddenLocatorColumns', () => {
@@ -143,4 +171,14 @@ describe('filterHiddenLocatorColumns', () => {
 
     expect(filterHiddenLocatorColumns(['NAME', ORACLE_ROWID_LOCATOR_COLUMN], locator)).toEqual(['NAME']);
   });
+
+  it('removes hidden DuckDB rowid columns from displayed columns', () => {
+    const locator = resolveEditRowLocator({
+      dbType: 'duckdb',
+      resultColumns: ['name', DUCKDB_ROWID_LOCATOR_COLUMN],
+      allowDuckDBRowID: true,
+    });
+
+    expect(filterHiddenLocatorColumns(['name', DUCKDB_ROWID_LOCATOR_COLUMN], locator)).toEqual(['name']);
+  });
 });
diff --git a/frontend/src/utils/rowLocator.ts b/frontend/src/utils/rowLocator.ts
index 7196d47..d2a6f11 100644
--- a/frontend/src/utils/rowLocator.ts
+++ b/frontend/src/utils/rowLocator.ts
@@ -3,8 +3,9 @@ import { resolveUniqueKeyGroupsFromIndexes } from '../components/dataGridCopyIns
 import { isOracleLikeDialect } from './sqlDialect';
 
 export const ORACLE_ROWID_LOCATOR_COLUMN = '__gonavi_oracle_rowid__';
+export const DUCKDB_ROWID_LOCATOR_COLUMN = '__gonavi_duckdb_rowid__';
 
-export type RowLocatorStrategy = 'primary-key' | 'unique-key' | 'oracle-rowid' | 'none';
+export type RowLocatorStrategy = 'primary-key' | 'unique-key' | 'oracle-rowid' | 'duckdb-rowid' | 'none';
 
 export type EditRowLocator = {
   strategy: RowLocatorStrategy;
@@ -22,6 +23,7 @@ export type ResolveEditRowLocatorParams = {
   primaryKeys?: string[];
   indexes?: IndexDefinition[];
   allowOracleRowID?: boolean;
+  allowDuckDBRowID?: boolean;
 };
 
 export type ResolveRowLocatorValuesResult =
@@ -54,6 +56,7 @@ export const resolveEditRowLocator = ({
   primaryKeys = [],
   indexes,
   allowOracleRowID = false,
+  allowDuckDBRowID = false,
 }: ResolveEditRowLocatorParams): EditRowLocator => {
   const columns = (resultColumns || []).map(normalizeColumnName).filter(Boolean);
   const primaryKeyColumns = (primaryKeys || []).map(normalizeColumnName).filter(Boolean);
@@ -93,10 +96,25 @@ export const resolveEditRowLocator = ({
     };
   }
 
+  if (allowDuckDBRowID && String(dbType || '').trim().toLowerCase() === 'duckdb' && hasColumn(columns, DUCKDB_ROWID_LOCATOR_COLUMN)) {
+    const rowIDColumn = findColumn(columns, DUCKDB_ROWID_LOCATOR_COLUMN);
+    return {
+      strategy: 'duckdb-rowid',
+      columns: ['rowid'],
+      valueColumns: [rowIDColumn],
+      hiddenColumns: [rowIDColumn],
+      readOnly: false,
+    };
+  }
+
   if (allowOracleRowID && isOracleLikeDialect(dbType)) {
     return buildReadOnlyLocator('未检测到主键或可用唯一索引，且结果中缺少 Oracle ROWID，无法安全提交修改。');
   }
 
+  if (allowDuckDBRowID && String(dbType || '').trim().toLowerCase() === 'duckdb') {
+    return buildReadOnlyLocator('未检测到主键、可用唯一索引或 DuckDB rowid，无法安全提交修改。');
+  }
+
   return buildReadOnlyLocator('未检测到主键或可用唯一索引，无法安全提交修改。');
 };
 
diff --git a/internal/db/duckdb_applychanges_test.go b/internal/db/duckdb_applychanges_test.go
new file mode 100644
index 0000000..65a8d67
--- /dev/null
+++ b/internal/db/duckdb_applychanges_test.go
@@ -0,0 +1,160 @@
+//go:build gonavi_full_drivers || gonavi_duckdb_driver
+
+package db
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"fmt"
+	"sync"
+	"testing"
+
+	"GoNavi-Wails/internal/connection"
+)
+
+const duckdbRecordingDriverName = "gonavi_duckdb_recording"
+
+var (
+	registerDuckDBRecordingDriverOnce sync.Once
+	duckdbRecordingDriverMu           sync.Mutex
+	duckdbRecordingDriverSeq          int
+	duckdbRecordingDriverStates       = map[string]*duckdbRecordingState{}
+)
+
+type duckdbRecordingState struct {
+	mu          sync.Mutex
+	execQueries []string
+	execArgs    [][]driver.NamedValue
+}
+
+func (s *duckdbRecordingState) snapshotExecQueries() []string {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	return append([]string(nil), s.execQueries...)
+}
+
+func (s *duckdbRecordingState) snapshotExecArgs() [][]driver.NamedValue {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	result := make([][]driver.NamedValue, len(s.execArgs))
+	for i, args := range s.execArgs {
+		result[i] = append([]driver.NamedValue(nil), args...)
+	}
+	return result
+}
+
+type duckdbRecordingDriver struct{}
+
+func (duckdbRecordingDriver) Open(name string) (driver.Conn, error) {
+	duckdbRecordingDriverMu.Lock()
+	state := duckdbRecordingDriverStates[name]
+	duckdbRecordingDriverMu.Unlock()
+	if state == nil {
+		return nil, fmt.Errorf("recording state not found: %s", name)
+	}
+	return &duckdbRecordingConn{state: state}, nil
+}
+
+type duckdbRecordingConn struct {
+	state *duckdbRecordingState
+}
+
+func (c *duckdbRecordingConn) Prepare(query string) (driver.Stmt, error) {
+	return nil, fmt.Errorf("prepare not supported in duckdb recording driver: %s", query)
+}
+
+func (c *duckdbRecordingConn) Close() error { return nil }
+
+func (c *duckdbRecordingConn) Begin() (driver.Tx, error) { return duckdbRecordingTx{}, nil }
+
+func (c *duckdbRecordingConn) ExecContext(_ context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
+	c.state.mu.Lock()
+	defer c.state.mu.Unlock()
+	c.state.execQueries = append(c.state.execQueries, query)
+	c.state.execArgs = append(c.state.execArgs, append([]driver.NamedValue(nil), args...))
+	return driver.RowsAffected(1), nil
+}
+
+var _ driver.ExecerContext = (*duckdbRecordingConn)(nil)
+
+type duckdbRecordingTx struct{}
+
+func (duckdbRecordingTx) Commit() error   { return nil }
+func (duckdbRecordingTx) Rollback() error { return nil }
+
+func openDuckDBRecordingDB(t *testing.T) (*sql.DB, *duckdbRecordingState) {
+	t.Helper()
+	registerDuckDBRecordingDriverOnce.Do(func() {
+		sql.Register(duckdbRecordingDriverName, duckdbRecordingDriver{})
+	})
+
+	duckdbRecordingDriverMu.Lock()
+	duckdbRecordingDriverSeq++
+	dsn := fmt.Sprintf("duckdb-recording-%d", duckdbRecordingDriverSeq)
+	state := &duckdbRecordingState{}
+	duckdbRecordingDriverStates[dsn] = state
+	duckdbRecordingDriverMu.Unlock()
+
+	dbConn, err := sql.Open(duckdbRecordingDriverName, dsn)
+	if err != nil {
+		t.Fatalf("打开 duckdb recording db 失败: %v", err)
+	}
+
+	t.Cleanup(func() {
+		_ = dbConn.Close()
+		duckdbRecordingDriverMu.Lock()
+		delete(duckdbRecordingDriverStates, dsn)
+		duckdbRecordingDriverMu.Unlock()
+	})
+
+	return dbConn, state
+}
+
+func TestDuckDBApplyChangesUsesUnquotedRowIDLocator(t *testing.T) {
+	t.Parallel()
+
+	dbConn, state := openDuckDBRecordingDB(t)
+	duckdb := &DuckDB{conn: dbConn}
+
+	changes := connection.ChangeSet{
+		Updates: []connection.UpdateRow{{
+			Keys: map[string]interface{}{
+				"rowid": 17,
+			},
+			Values: map[string]interface{}{
+				"name": "renamed",
+			},
+		}},
+		Deletes: []map[string]interface{}{
+			{"rowid": 21},
+		},
+		LocatorStrategy: "duckdb-rowid",
+	}
+
+	if err := duckdb.ApplyChanges("main.events", changes); err != nil {
+		t.Fatalf("ApplyChanges 返回错误: %v", err)
+	}
+
+	queries := state.snapshotExecQueries()
+	if len(queries) != 2 {
+		t.Fatalf("期望执行 2 条 SQL，实际=%d %#v", len(queries), queries)
+	}
+	if queries[0] != `DELETE FROM "main"."events" WHERE rowid = ?` {
+		t.Fatalf("删除 SQL 不符合预期: %s", queries[0])
+	}
+	if queries[1] != `UPDATE "main"."events" SET "name" = ? WHERE rowid = ?` {
+		t.Fatalf("更新 SQL 不符合预期: %s", queries[1])
+	}
+
+	args := state.snapshotExecArgs()
+	if len(args) != 2 || len(args[0]) != 1 || len(args[1]) != 2 {
+		t.Fatalf("执行参数数量不符合预期: %#v", args)
+	}
+	if args[0][0].Value != 21 {
+		t.Fatalf("删除 rowid 参数错误: %#v", args[0])
+	}
+	if args[1][0].Value != "renamed" || args[1][1].Value != 17 {
+		t.Fatalf("更新参数错误: %#v", args[1])
+	}
+}
diff --git a/internal/db/duckdb_impl.go b/internal/db/duckdb_impl.go
index 82d6e6b..008e8bd 100644
--- a/internal/db/duckdb_impl.go
+++ b/internal/db/duckdb_impl.go
@@ -423,13 +423,24 @@ func (d *DuckDB) ApplyChanges(tableName string, changes connection.ChangeSet) er
 		qualifiedTable = fmt.Sprintf("%s.%s", quoteIdent(schema), quoteIdent(table))
 	}
 
-	for _, pk := range changes.Deletes {
+	isDuckDBRowIDLocator := strings.EqualFold(strings.TrimSpace(changes.LocatorStrategy), "duckdb-rowid")
+	buildWhere := func(keys map[string]interface{}) ([]string, []interface{}) {
 		var wheres []string
 		var args []interface{}
-		for k, v := range pk {
+		for k, v := range keys {
+			if isDuckDBRowIDLocator && strings.EqualFold(strings.TrimSpace(k), "rowid") {
+				wheres = append(wheres, "rowid = ?")
+				args = append(args, v)
+				continue
+			}
 			wheres = append(wheres, fmt.Sprintf("%s = ?", quoteIdent(k)))
 			args = append(args, v)
 		}
+		return wheres, args
+	}
+
+	for _, pk := range changes.Deletes {
+		wheres, args := buildWhere(pk)
 		if len(wheres) == 0 {
 			continue
 		}
@@ -450,11 +461,8 @@ func (d *DuckDB) ApplyChanges(tableName string, changes connection.ChangeSet) er
 			continue
 		}
 
-		var wheres []string
-		for k, v := range update.Keys {
-			wheres = append(wheres, fmt.Sprintf("%s = ?", quoteIdent(k)))
-			args = append(args, v)
-		}
+		wheres, whereArgs := buildWhere(update.Keys)
+		args = append(args, whereArgs...)
 		if len(wheres) == 0 {
 			return fmt.Errorf("更新操作需要主键条件")
 		}