fix(Postgres Node): Empty return data fix for Postgres and MySQL (#7016)

packages/nodes-base/nodes/MySql/MySql.node.ts

@@ -11,7 +11,7 @@ export class MySql extends VersionedNodeType {
 			name: 'mySql',
 			icon: 'file:mysql.svg',
 			group: ['input'],
-			defaultVersion: 2.1,
+			defaultVersion: 2.2,
 			description: 'Get, add and update data in MySQL',
 		};
 
@@ -19,6 +19,7 @@ export class MySql extends VersionedNodeType {
 			1: new MySqlV1(baseDescription),
 			2: new MySqlV2(baseDescription),
 			2.1: new MySqlV2(baseDescription),
+			2.2: new MySqlV2(baseDescription),
 		};
 
 		super(nodeVersions, baseDescription);

packages/nodes-base/nodes/MySql/test/v2/operations.test.ts

@@ -305,7 +305,7 @@ describe('Test MySql V2, operations', () => {
 
 		const runQueries: QueryRunner = configureQueryRunner.call(
 			fakeExecuteFunction,
-			nodeOptions,
+			{ ...nodeOptions, nodeVersion: 2 },
 			pool,
 		);
 

packages/nodes-base/nodes/MySql/test/v2/runQueries.test.ts

@@ -45,7 +45,7 @@ describe('Test MySql V2, runQueries', () => {
 	});
 
 	it('should execute in "Single" mode, should return success true', async () => {
-		const nodeOptions: IDataObject = { queryBatching: BATCH_MODE.SINGLE };
+		const nodeOptions: IDataObject = { queryBatching: BATCH_MODE.SINGLE, nodeVersion: 2 };
 
 		const pool = createFakePool(fakeConnection);
 		const fakeExecuteFunction = createMockExecuteFunction({}, mySqlMockNode);
@@ -81,7 +81,7 @@ describe('Test MySql V2, runQueries', () => {
 	});
 
 	it('should execute in "independently" mode, should return success true', async () => {
-		const nodeOptions: IDataObject = { queryBatching: BATCH_MODE.INDEPENDENTLY };
+		const nodeOptions: IDataObject = { queryBatching: BATCH_MODE.INDEPENDENTLY, nodeVersion: 2 };
 
 		const pool = createFakePool(fakeConnection);
 
@@ -126,7 +126,7 @@ describe('Test MySql V2, runQueries', () => {
 	});
 
 	it('should execute in "transaction" mode, should return success true', async () => {
-		const nodeOptions: IDataObject = { queryBatching: BATCH_MODE.TRANSACTION };
+		const nodeOptions: IDataObject = { queryBatching: BATCH_MODE.TRANSACTION, nodeVersion: 2 };
 
 		const pool = createFakePool(fakeConnection);
 

packages/nodes-base/nodes/MySql/v2/actions/versionDescription.ts

@@ -8,7 +8,7 @@ export const versionDescription: INodeTypeDescription = {
 	name: 'mySql',
 	icon: 'file:mysql.svg',
 	group: ['input'],
-	version: [2, 2.1],
+	version: [2, 2.1, 2.2],
 	subtitle: '={{ $parameter["operation"] }}',
 	description: 'Get, add and update data in MySQL',
 	defaults: {

packages/nodes-base/nodes/MySql/v2/helpers/utils.ts

@@ -167,7 +167,23 @@ export function prepareOutput(
 	}
 
 	if (!returnData.length) {
-		returnData.push({ json: { success: true } });
+		if ((options?.nodeVersion as number) < 2.2) {
+			returnData.push({ json: { success: true } });
+		} else {
+			const isSelectQuery = statements
+				.filter((statement) => !statement.startsWith('--'))
+				.every((statement) =>
+					statement
+						.replace(/\/\*.*?\*\//g, '') // remove multiline comments
+						.replace(/\n/g, '')
+						.toLowerCase()
+						.startsWith('select'),
+				);
+
+			if (!isSelectQuery) {
+				returnData.push({ json: { success: true } });
+			}
+		}
 	}
 
 	return returnData;

packages/nodes-base/nodes/Postgres/Postgres.node.ts

@@ -11,7 +11,7 @@ export class Postgres extends VersionedNodeType {
 			name: 'postgres',
 			icon: 'file:postgres.svg',
 			group: ['input'],
-			defaultVersion: 2.2,
+			defaultVersion: 2.3,
 			description: 'Get, add and update data in Postgres',
 		};
 
@@ -20,6 +20,7 @@ export class Postgres extends VersionedNodeType {
 			2: new PostgresV2(baseDescription),
 			2.1: new PostgresV2(baseDescription),
 			2.2: new PostgresV2(baseDescription),
+			2.3: new PostgresV2(baseDescription),
 		};
 
 		super(nodeVersions, baseDescription);

packages/nodes-base/nodes/Postgres/test/v2/runQueries.test.ts

@@ -44,7 +44,9 @@ describe('Test PostgresV2, runQueries', () => {
 		const thisArg = mock<IExecuteFunctions>();
 		const runQueries = configureQueryRunner.call(thisArg, node, false, pgp, db);
 
-		const result = await runQueries([{ query: 'SELECT * FROM table', values: [] }], [], {});
+		const result = await runQueries([{ query: 'SELECT * FROM table', values: [] }], [], {
+			nodeVersion: 2.2,
+		});
 
 		expect(result).toBeDefined();
 		expect(result).toHaveLength(1);

packages/nodes-base/nodes/Postgres/v2/actions/versionDescription.ts

@@ -8,7 +8,7 @@ export const versionDescription: INodeTypeDescription = {
 	name: 'postgres',
 	icon: 'file:postgres.svg',
 	group: ['input'],
-	version: [2, 2.1, 2.2],
+	version: [2, 2.1, 2.2, 2.3],
 	subtitle: '={{ $parameter["operation"] }}',
 	description: 'Get, add and update data in Postgres',
 	defaults: {

packages/nodes-base/nodes/Postgres/v2/helpers/utils.ts

@@ -199,6 +199,15 @@ export function addReturning(
 	return [`${query} RETURNING $${replacementIndex}:name`, [...replacements, outputColumns]];
 }
 
+const isSelectQuery = (query: string) => {
+	return query
+		.replace(/\/\*.*?\*\//g, '') // remove multiline comments
+		.replace(/\n/g, '')
+		.split(';')
+		.filter((statement) => statement && !statement.startsWith('--')) // remove comments and empty statements
+		.every((statement) => statement.trim().toLowerCase().startsWith('select'));
+};
+
 export function configureQueryRunner(
 	this: IExecuteFunctions,
 	node: INode,
@@ -221,7 +230,16 @@ export function configureQueryRunner(
 						});
 					})
 					.flat();
-				returnData = returnData.length ? returnData : emptyReturnData;
+
+				if (!returnData.length) {
+					if ((options?.nodeVersion as number) < 2.3) {
+						returnData = emptyReturnData;
+					} else {
+						returnData = queries.every((query) => isSelectQuery(query.query))
+							? []
+							: [{ json: { success: true } }];
+					}
+				}
 			} catch (err) {
 				const error = parsePostgresError(node, err, queries);
 				if (!continueOnFail) throw error;
@@ -242,13 +260,26 @@ export function configureQueryRunner(
 				const result: INodeExecutionData[] = [];
 				for (let i = 0; i < queries.length; i++) {
 					try {
-						const transactionResult: IDataObject[] = await transaction.any(
+						const query = queries[i].query;
-							queries[i].query,
+						const values = queries[i].values;
-							queries[i].values,
+
-						);
+						let transactionResults;
+						if ((options?.nodeVersion as number) < 2.3) {
+							transactionResults = await transaction.any(query, values);
+						} else {
+							transactionResults = (await transaction.multi(query, values)).flat();
+						}
+
+						if (!transactionResults.length) {
+							if ((options?.nodeVersion as number) < 2.3) {
+								transactionResults = emptyReturnData;
+							} else {
+								transactionResults = isSelectQuery(query) ? [] : [{ success: true }];
+							}
+						}
 
 						const executionData = this.helpers.constructExecutionMetaData(
-							wrapData(transactionResult.length ? transactionResult : emptyReturnData),
+							wrapData(transactionResults),
 							{ itemData: { item: i } },
 						);
 
@@ -265,17 +296,30 @@ export function configureQueryRunner(
 		}
 
 		if (queryBatching === 'independently') {
-			returnData = await db.task(async (t) => {
+			returnData = await db.task(async (task) => {
 				const result: INodeExecutionData[] = [];
 				for (let i = 0; i < queries.length; i++) {
 					try {
-						const transactionResult: IDataObject[] = await t.any(
+						const query = queries[i].query;
-							queries[i].query,
+						const values = queries[i].values;
-							queries[i].values,
+
-						);
+						let transactionResults;
+						if ((options?.nodeVersion as number) < 2.3) {
+							transactionResults = await task.any(query, values);
+						} else {
+							transactionResults = (await task.multi(query, values)).flat();
+						}
+
+						if (!transactionResults.length) {
+							if ((options?.nodeVersion as number) < 2.3) {
+								transactionResults = emptyReturnData;
+							} else {
+								transactionResults = isSelectQuery(query) ? [] : [{ success: true }];
+							}
+						}
 
 						const executionData = this.helpers.constructExecutionMetaData(
-							wrapData(transactionResult.length ? transactionResult : emptyReturnData),
+							wrapData(transactionResults),
 							{ itemData: { item: i } },
 						);