diff --git a/frontend/src/components/QueryEditor.results-and-drop.test.tsx b/frontend/src/components/QueryEditor.results-and-drop.test.tsx
index f47e6ac..19bf808 100644
--- a/frontend/src/components/QueryEditor.results-and-drop.test.tsx
+++ b/frontend/src/components/QueryEditor.results-and-drop.test.tsx
@@ -850,11 +850,10 @@ describe('QueryEditor external SQL save', () => {
       success: true,
       data: [
         {
-          statementIndex: 1,
           columns: ['dddwno', 'dddwlist'],
           rows: [{ dddwno: '001', dddwlist: 'demo' }],
         },
-        { statementIndex: 1, columns: ['affectedRows'], rows: [{ affectedRows: 846 }] },
+        { columns: ['affectedRows'], rows: [{ affectedRows: 846 }] },
       ],
     });
 
diff --git a/frontend/src/components/QueryEditor.tsx b/frontend/src/components/QueryEditor.tsx
index 84a66e6..35ecc39 100644
--- a/frontend/src/components/QueryEditor.tsx
+++ b/frontend/src/components/QueryEditor.tsx
@@ -3479,10 +3479,20 @@ const QueryEditor: React.FC<{ tab: TabData; isActive?: boolean }> = ({ tab, isAc
             const maxRows = Number(queryOptions?.maxRows) || 0;
             let anyTruncated = false;
             const statementResultCounts = new Map<number, number>();
+            const resolveSourceStatementIndex = (rsData: any, idx: number): number => {
+                const explicitStatementIndex = Number(rsData?.statementIndex || 0);
+                if (explicitStatementIndex > 0) {
+                    return explicitStatementIndex;
+                }
+                if (normalizedDbType === 'sqlserver' && sourceStatements.length === 1) {
+                    return 1;
+                }
+                return idx + 1;
+            };
             const sqlServerStatementsWithConcreteResults = new Set<number>();
             if (normalizedDbType === 'sqlserver') {
                 resultSetDataArray.forEach((rsData, idx) => {
-                    const sourceStatementIndex = Number(rsData?.statementIndex || idx + 1);
+                    const sourceStatementIndex = resolveSourceStatementIndex(rsData, idx);
                     const resultMessages = normalizeQueryResultMessages(rsData?.messages);
                     if (hasConcreteQueryResultSetData(rsData, resultMessages)) {
                         sqlServerStatementsWithConcreteResults.add(sourceStatementIndex);
@@ -3495,7 +3505,7 @@ const QueryEditor: React.FC<{ tab: TabData; isActive?: boolean }> = ({ tab, isAc
 
             for (let idx = 0; idx < resultSetDataArray.length; idx++) {
                 const rsData = resultSetDataArray[idx];
-                const sourceStatementIndex = Number(rsData?.statementIndex || idx + 1);
+                const sourceStatementIndex = resolveSourceStatementIndex(rsData, idx);
                 const plan = executablePlans[Math.max(0, sourceStatementIndex - 1)];
                 const originalSql = plan?.originalSql || '';
                 const executedSql = plan?.executedSql || originalSql;
diff --git a/internal/app/methods_db.go b/internal/app/methods_db.go
index 0862048..bbc0339 100644
--- a/internal/app/methods_db.go
+++ b/internal/app/methods_db.go
@@ -1038,6 +1038,9 @@ func (a *App) DBQueryMulti(config connection.ConnectionConfig, dbName string, qu
 		logger.Warnf("DBQueryMulti 原生多结果集返回空结果，将回退逐条执行：%s SQL片段=%q", formatConnSummary(runConfig), sqlSnippet(query))
 		results = nil
 	}
+	if useNativeMultiResult && results != nil {
+		normalizeNativeResultStatementIndexes(runConfig.Type, statements, results)
+	}
 
 	// 驱动支持多结果集，直接返回
 	if results != nil {
@@ -1276,6 +1279,33 @@ func (a *App) DBQueryMulti(config connection.ConnectionConfig, dbName string, qu
 	return connection.QueryResult{Success: true, Data: resultSets, QueryID: queryID, Message: fallbackMsg}
 }
 
+func normalizeNativeResultStatementIndexes(dbType string, statements []string, results []connection.ResultSetData) {
+	if !isSQLServerDBType(dbType) || len(results) == 0 {
+		return
+	}
+	hasExplicitStatementIndex := false
+	for _, result := range results {
+		if result.StatementIndex > 0 {
+			hasExplicitStatementIndex = true
+			break
+		}
+	}
+	if hasExplicitStatementIndex {
+		return
+	}
+
+	switch {
+	case len(statements) <= 1:
+		for idx := range results {
+			results[idx].StatementIndex = 1
+		}
+	case len(results) == len(statements):
+		for idx := range results {
+			results[idx].StatementIndex = idx + 1
+		}
+	}
+}
+
 func shouldUseNativeMultiResultBatch(dbType string, statements []string, allReadOnly bool) bool {
 	if allReadOnly {
 		return true
diff --git a/internal/app/methods_db_multi_test.go b/internal/app/methods_db_multi_test.go
index 0b4a382..9037c36 100644
--- a/internal/app/methods_db_multi_test.go
+++ b/internal/app/methods_db_multi_test.go
@@ -1525,6 +1525,51 @@ func TestDBQueryMultiKeepsAllResultSetsFromSingleSQLServerStatement(t *testing.T
 	}
 }
 
+func TestDBQueryMultiNormalizesSingleSQLServerSelectAffectedRowsStatementIndex(t *testing.T) {
+	originalNewDatabaseFunc := newDatabaseFunc
+	t.Cleanup(func() {
+		newDatabaseFunc = originalNewDatabaseFunc
+	})
+
+	query := "select * from c_dddw"
+	fakeDB := &fakeBatchWriteDB{
+		multiResult: map[string][]connection.ResultSetData{
+			query: {
+				{
+					Rows:    []map[string]interface{}{{"dddwno": "001", "dddwlist": "demo"}},
+					Columns: []string{"dddwno", "dddwlist"},
+				},
+				{
+					Rows:    []map[string]interface{}{{"affectedRows": int64(846)}},
+					Columns: []string{"affectedRows"},
+				},
+			},
+		},
+		queryErr: map[string]error{},
+	}
+	newDatabaseFunc = func(dbType string) (db.Database, error) {
+		return fakeDB, nil
+	}
+
+	app := NewAppWithSecretStore(secretstore.NewUnavailableStore("test"))
+	config := connection.ConnectionConfig{Type: "sqlserver", Host: "127.0.0.1", Port: 1433, User: "sa"}
+
+	result := app.DBQueryMulti(config, "hydee", query, "sqlserver-select-affectedrows-index-test")
+	if !result.Success {
+		t.Fatalf("expected DBQueryMulti success, got failure: %s", result.Message)
+	}
+	resultSets, ok := result.Data.([]connection.ResultSetData)
+	if !ok {
+		t.Fatalf("expected []connection.ResultSetData, got %T", result.Data)
+	}
+	if len(resultSets) != 2 {
+		t.Fatalf("expected two result sets, got %#v", resultSets)
+	}
+	if resultSets[0].StatementIndex != 1 || resultSets[1].StatementIndex != 1 {
+		t.Fatalf("expected select result and trailing affectedRows result to share statementIndex=1, got %#v", resultSets)
+	}
+}
+
 func TestDBQueryMultiTreatsBareSQLServerProcedureCallAsQueryFirst(t *testing.T) {
 	originalNewDatabaseFunc := newDatabaseFunc
 	t.Cleanup(func() {