fix(Microsoft SQL Node): Fix execute query to allow for non select qu…

…ery to run (#11335)

packages/nodes-base/nodes/Microsoft/Sql/GenericFunctions.ts

@@ -1,9 +1,12 @@
+import type { IResult } from 'mssql';
+import mssql from 'mssql';
 import type { IDataObject, INodeExecutionData } from 'n8n-workflow';
 import { deepCopy } from 'n8n-workflow';
-import mssql from 'mssql';
-import type { ITables, OperationInputData } from './interfaces';
+
 import { chunk, flatten } from '@utils/utilities';
 
+import type { ITables, OperationInputData } from './interfaces';
+
 /**
  * Returns a copy of the item which only contains the json data and
  * of that only the defined properties
@@ -234,3 +237,36 @@ export async function deleteOperation(tables: ITables, pool: mssql.ConnectionPoo
 		0,
 	);
 }
+
+export async function executeSqlQueryAndPrepareResults(
+	pool: mssql.ConnectionPool,
+	rawQuery: string,
+	itemIndex: number,
+): Promise<INodeExecutionData[]> {
+	const rawResult: IResult<any> = await pool.request().query(rawQuery);
+	const { recordsets, rowsAffected } = rawResult;
+	if (Array.isArray(recordsets) && recordsets.length > 0) {
+		const result: IDataObject[] = recordsets.length > 1 ? flatten(recordsets) : recordsets[0];
+
+		return result.map((entry) => ({
+			json: entry,
+			pairedItem: [{ item: itemIndex }],
+		}));
+	} else if (rowsAffected && rowsAffected.length > 0) {
+		// Handle non-SELECT queries (e.g., INSERT, UPDATE, DELETE)
+		return rowsAffected.map((affectedRows, idx) => ({
+			json: {
+				message: `Query ${idx + 1} executed successfully`,
+				rowsAffected: affectedRows,
+			},
+			pairedItem: [{ item: itemIndex }],
+		}));
+	} else {
+		return [
+			{
+				json: { message: 'Query executed successfully, but no rows were affected' },
+				pairedItem: [{ item: itemIndex }],
+			},
+		];
+	}
+}

packages/nodes-base/nodes/Microsoft/Sql/MicrosoftSql.node.ts

@@ -12,17 +12,17 @@ import {
 	NodeConnectionType,
 } from 'n8n-workflow';
 
-import type { ITables } from './interfaces';
+import { flatten, generatePairedItemData, getResolvables } from '@utils/utilities';
 
 import {
 	configurePool,
 	createTableStruct,
 	deleteOperation,
+	executeSqlQueryAndPrepareResults,
 	insertOperation,
 	updateOperation,
 } from './GenericFunctions';
-
-import { flatten, generatePairedItemData, getResolvables } from '@utils/utilities';
+import type { ITables } from './interfaces';
 
 export class MicrosoftSql implements INodeType {
 	description: INodeTypeDescription = {
@@ -268,17 +268,8 @@ export class MicrosoftSql implements INodeType {
 							this.evaluateExpression(resolvable, i) as string,
 						);
 					}
-
-					const { recordsets }: IResult<any[]> = await pool.request().query(rawQuery);
-
-					const result: IDataObject[] = recordsets.length > 1 ? flatten(recordsets) : recordsets[0];
-
-					for (const entry of result) {
-						returnData.push({
-							json: entry,
-							pairedItem: [{ item: i }],
-						});
-					}
+					const results = await executeSqlQueryAndPrepareResults(pool, rawQuery, i);
+					returnData.push(...results);
 				} catch (error) {
 					if (this.continueOnFail()) {
 						returnData.push({

packages/nodes-base/nodes/Microsoft/Sql/test/utils.test.ts

@@ -1,15 +1,19 @@
 import { Request } from 'mssql';
+import type { IResult } from 'mssql';
+import type mssql from 'mssql';
 import type { IDataObject } from 'n8n-workflow';
+
 import {
 	configurePool,
 	deleteOperation,
+	executeSqlQueryAndPrepareResults,
 	insertOperation,
 	mssqlChunk,
 	updateOperation,
 } from '../GenericFunctions';
 
 describe('MSSQL tests', () => {
-	let querySpy: jest.SpyInstance<void, Parameters<Request['query']>>;
+	let querySpy: jest.SpyInstance;
 	let request: Request;
 
 	const assertParameters = (parameters: unknown[][] | IDataObject) => {
@@ -34,18 +38,12 @@ describe('MSSQL tests', () => {
 		) {
 			// eslint-disable-next-line @typescript-eslint/no-this-alias
 			request = this;
-			return [
-				[
-					[
-						{
-							recordsets: [],
-							recordset: undefined,
-							output: {},
-							rowsAffected: [0],
-						},
-					],
-				],
-			];
+			return {
+				recordsets: [],
+				recordset: [],
+				output: {},
+				rowsAffected: [0],
+			} as unknown as IResult<unknown>;
 		});
 	});
 
@@ -154,4 +152,94 @@ describe('MSSQL tests', () => {
 			expect(chunks.map((chunk) => chunk.length)).toEqual([699, 699, 699, 699, 204]);
 		});
 	});
+
+	describe('executeSqlQueryAndPrepareResults', () => {
+		it('should handle SELECT query with single record', async () => {
+			querySpy.mockResolvedValueOnce({
+				recordsets: [[{ id: 1, name: 'Test' }]] as any,
+				recordset: [{ id: 1, name: 'Test', columns: [{ name: 'id' }, { name: 'name' }] }],
+				rowsAffected: [1],
+				output: {},
+			} as unknown as IResult<unknown>);
+
+			const pool = { request: () => new Request() } as any as mssql.ConnectionPool;
+			const result = await executeSqlQueryAndPrepareResults(pool, 'SELECT * FROM users', 0);
+
+			expect(result).toEqual([
+				{
+					json: { id: 1, name: 'Test' },
+					pairedItem: [{ item: 0 }],
+				},
+			]);
+			expect(querySpy).toHaveBeenCalledWith('SELECT * FROM users');
+		});
+
+		it('should handle SELECT query with multiple records', async () => {
+			querySpy.mockResolvedValueOnce({
+				recordsets: [[{ id: 1 }], [{ name: 'Test' }]] as unknown,
+				rowsAffected: [1, 1],
+				output: {},
+			} as unknown as IResult<unknown>);
+
+			const pool = { request: () => new Request() } as any as mssql.ConnectionPool;
+			const result = await executeSqlQueryAndPrepareResults(pool, 'SELECT id; SELECT name', 1);
+
+			expect(result).toEqual([
+				{ json: { id: 1 }, pairedItem: [{ item: 1 }] },
+				{ json: { name: 'Test' }, pairedItem: [{ item: 1 }] },
+			]);
+		});
+
+		it('should handle non-SELECT query', async () => {
+			querySpy.mockResolvedValueOnce({
+				recordsets: [],
+				recordset: [],
+				rowsAffected: [5],
+				output: {},
+			} as unknown as IResult<unknown>);
+
+			const pool = { request: () => new Request() } as any as mssql.ConnectionPool;
+			const result = await executeSqlQueryAndPrepareResults(pool, 'UPDATE users SET active = 1', 2);
+
+			expect(result).toEqual([
+				{
+					json: { message: 'Query 1 executed successfully', rowsAffected: 5 },
+					pairedItem: [{ item: 2 }],
+				},
+			]);
+		});
+
+		it('should handle query with no affected rows', async () => {
+			querySpy.mockResolvedValueOnce({
+				recordsets: [],
+				recordset: [],
+				rowsAffected: [],
+				output: {},
+			} as unknown as IResult<unknown>);
+
+			const pool = { request: () => new Request() } as any as mssql.ConnectionPool;
+			const result = await executeSqlQueryAndPrepareResults(
+				pool,
+				'DELETE FROM users WHERE id = 999',
+				3,
+			);
+
+			expect(result).toEqual([
+				{
+					json: { message: 'Query executed successfully, but no rows were affected' },
+					pairedItem: [{ item: 3 }],
+				},
+			]);
+		});
+
+		it('should throw an error when query fails', async () => {
+			const errorMessage = 'Database error';
+			querySpy.mockRejectedValueOnce(new Error(errorMessage));
+
+			const pool = { request: () => new Request() } as any as mssql.ConnectionPool;
+			await expect(executeSqlQueryAndPrepareResults(pool, 'INVALID SQL', 4)).rejects.toThrow(
+				errorMessage,
+			);
+		});
+	});
 });