feat(Postgres Node): Overhaul node

packages/nodes-base/nodes/Postgres/v2/actions/database/executeQuery.operation.ts

@@ -0,0 +1,84 @@
+import type { IExecuteFunctions } from 'n8n-core';
+import type { IDataObject, INodeExecutionData, INodeProperties } from 'n8n-workflow';
+import { NodeOperationError } from 'n8n-workflow';
+
+import { updateDisplayOptions } from '../../../../../utils/utilities';
+
+import type { PgpDatabase, QueriesRunner, QueryWithValues } from '../../helpers/interfaces';
+
+import { replaceEmptyStringsByNulls } from '../../helpers/utils';
+
+import { optionsCollection } from '../common.descriptions';
+
+const properties: INodeProperties[] = [
+	{
+		displayName: 'Query',
+		name: 'query',
+		type: 'string',
+		default: '',
+		placeholder: 'e.g. SELECT id, name FROM product WHERE quantity > $1 AND price <= $2',
+		required: true,
+		description:
+			"The SQL query to execute. You can use n8n expressions and $1, $2, $3, etc to refer to the 'Query Parameters' set in options below.",
+		typeOptions: {
+			rows: 3,
+		},
+		hint: 'Prefer using query parameters over n8n expressions to avoid SQL injection attacks',
+	},
+	{
+		displayName: `
+		To use query parameters in your SQL query, reference them as $1, $2, $3, etc in the corresponding order. <a href="https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.postgres/#use-query-parameters">More info</a>.
+		`,
+		name: 'notice',
+		type: 'notice',
+		default: '',
+	},
+	optionsCollection,
+];
+
+const displayOptions = {
+	show: {
+		resource: ['database'],
+		operation: ['executeQuery'],
+	},
+};
+
+export const description = updateDisplayOptions(displayOptions, properties);
+
+export async function execute(
+	this: IExecuteFunctions,
+	runQueries: QueriesRunner,
+	items: INodeExecutionData[],
+	nodeOptions: IDataObject,
+	_db?: PgpDatabase,
+): Promise<INodeExecutionData[]> {
+	items = replaceEmptyStringsByNulls(items, nodeOptions.replaceEmptyStrings as boolean);
+
+	const queries: QueryWithValues[] = [];
+
+	for (let i = 0; i < items.length; i++) {
+		const query = this.getNodeParameter('query', i) as string;
+
+		let values: IDataObject[] = [];
+
+		let queryReplacement = this.getNodeParameter('options.queryReplacement', i, '');
+
+		if (typeof queryReplacement === 'string') {
+			queryReplacement = queryReplacement.split(',').map((entry) => entry.trim());
+		}
+
+		if (Array.isArray(queryReplacement)) {
+			values = queryReplacement as IDataObject[];
+		} else {
+			throw new NodeOperationError(
+				this.getNode(),
+				'Query Replacement must be a string of comma-separated values, or an array of values',
+				{ itemIndex: i },
+			);
+		}
+
+		queries.push({ query, values });
+	}
+
+	return runQueries(queries, items, nodeOptions);
+}