feat(Data Table Node): Add limit to get and change copy (no-changelog) (#19190)

packages/frontend/editor-ui/src/components/ResourceMapper/MappingModeSelect.vue

@@ -70,7 +70,7 @@ const errorMessage = computed<string>(() => {
 			});
 		}
 		// No data error message
-		if (props.fieldsToMap.length === 0) {
+		if (props.fieldsToMap.length === 0 && !props.typeOptions?.resourceMapper?.hideNoDataError) {
 			return (
 				// Use custom error message if defined
 				resourceMapperTypeOptions.value?.noFieldsError ||

packages/nodes-base/nodes/DataTable/actions/row/get.operation.ts

@@ -17,7 +17,20 @@ const displayOptions: IDisplayOptions = {
 	},
 };
 
-export const description: INodeProperties[] = [...getSelectFields(displayOptions)];
+export const description: INodeProperties[] = [
+	...getSelectFields(displayOptions),
+	{
+		displayName: 'Limit',
+		name: 'limit',
+		type: 'number',
+		typeOptions: {
+			minValue: 1,
+		},
+		displayOptions,
+		default: null,
+		description: 'Max number of results to return',
+	},
+];
 
 export async function execute(
 	this: IExecuteFunctions,

packages/nodes-base/nodes/DataTable/common/addRow.ts

@@ -23,7 +23,7 @@ export function makeAddRow(operation: string, displayOptions: IDisplayOptions) {
 		typeOptions: {
 			loadOptionsDependsOn: [`${DATA_TABLE_ID_FIELD}.value`],
 			resourceMapper: {
-				valuesLabel: `Columns to ${operation}`,
+				valuesLabel: `Values to ${operation}`,
 				resourceMapperMethod: 'getDataTables',
 				mode: 'add',
 				fieldWords: {
@@ -32,6 +32,7 @@ export function makeAddRow(operation: string, displayOptions: IDisplayOptions) {
 				},
 				addAllFields: true,
 				multiKeyMatch: true,
+				hideNoDataError: true,
 			},
 		},
 		displayOptions,

packages/nodes-base/nodes/DataTable/common/methods.ts

@@ -44,17 +44,22 @@ export async function tableSearch(
 export async function getDataTableColumns(this: ILoadOptionsFunctions) {
 	const returnData: Array<INodePropertyOptions & { type: string }> = [
 		// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased-id, n8n-nodes-base/node-param-display-name-miscased
-		{ name: 'id - (number)', value: 'id', type: 'number' },
+		{ name: 'id (number)', value: 'id', type: 'number' },
 		// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
-		{ name: 'createdAt - (date)', value: 'createdAt', type: 'date' },
+		{ name: 'createdAt (date)', value: 'createdAt', type: 'date' },
 		// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
-		{ name: 'updatedAt - (date)', value: 'updatedAt', type: 'date' },
+		{ name: 'updatedAt (date)', value: 'updatedAt', type: 'date' },
 	];
+
 	const proxy = await getDataTableProxyLoadOptions(this);
+	if (!proxy) {
+		return returnData;
+	}
+
 	const columns = await proxy.getColumns();
 	for (const column of columns) {
 		returnData.push({
-			name: `${column.name} - (${column.type})`,
+			name: `${column.name} (${column.type})`,
 			value: column.name,
 			type: column.type,
 		});
@@ -69,6 +74,10 @@ const systemColumns = [
 ] as const;
 
 export async function getConditionsForColumn(this: ILoadOptionsFunctions) {
+	const proxy = await getDataTableProxyLoadOptions(this);
+	if (!proxy) {
+		return [];
+	}
 	const keyName = this.getCurrentNodeParameter('&keyName') as string;
 
 	// Base conditions available for all column types
@@ -87,18 +96,8 @@ export async function getConditionsForColumn(this: ILoadOptionsFunctions) {
 	];
 
 	const stringConditions: INodePropertyOptions[] = [
-		{
-			name: 'LIKE operator',
-			value: 'like',
-			description:
-				'Case-sensitive pattern matching. Use % as wildcard (e.g., "%Mar%" to match "Anne-Marie").',
-		},
-		{
-			name: 'ILIKE operator',
-			value: 'ilike',
-			description:
-				'Case-insensitive pattern matching. Use % as wildcard (e.g., "%mar%" to match "Anne-Marie").',
-		},
+		{ name: 'Contains (Case-Sensitive)', value: 'like' },
+		{ name: 'Contains (Case-Insensitive)', value: 'ilike' },
 	];
 
 	const allConditions = [...baseConditions, ...comparableConditions, ...stringConditions];
@@ -111,9 +110,7 @@ export async function getConditionsForColumn(this: ILoadOptionsFunctions) {
 	// Get column type to determine available conditions
 	const column =
 		systemColumns.find((col) => col.name === keyName) ??
-		(await (await getDataTableProxyLoadOptions(this)).getColumns()).find(
-			(col) => col.name === keyName,
-		);
+		(await proxy.getColumns()).find((col) => col.name === keyName);
 
 	if (!column) {
 		return baseConditions;
@@ -135,6 +132,9 @@ export async function getConditionsForColumn(this: ILoadOptionsFunctions) {
 
 export async function getDataTables(this: ILoadOptionsFunctions): Promise<ResourceMapperFields> {
 	const proxy = await getDataTableProxyLoadOptions(this);
+	if (!proxy) {
+		return { fields: [] };
+	}
 	const result = await proxy.getColumns();
 
 	const fields: ResourceMapperField[] = [];

packages/nodes-base/nodes/DataTable/common/selectMany.ts

@@ -122,33 +122,48 @@ export async function executeSelectMany(
 		throw new NodeOperationError(ctx.getNode(), 'At least one condition is required');
 	}
 
-	let take = 1000;
+	const PAGE_SIZE = 1000;
 	const result: Array<{ json: DataStoreRowReturn }> = [];
-	let totalCount = undefined;
-	do {
-		const response = await dataStoreProxy.getManyRowsAndCount({
-			skip: result.length,
-			take,
+
+	const limit = ctx.getNodeParameter('limit', index, undefined);
+
+	let expectedTotal: number | undefined;
+	let skip = 0;
+	let take = PAGE_SIZE;
+
+	while (true) {
+		const { data, count } = await dataStoreProxy.getManyRowsAndCount({
+			skip,
+			take: limit ? Math.min(take, limit - result.length) : take,
 			filter,
 		});
-		const data = response.data.map((json) => ({ json }));
+		const wrapped = data.map((json) => ({ json }));
 
-		// Optimize common path of <1000 results
-		if (response.count === response.data.length) {
-			return data;
+		// Fast path: everything fits in a single page
+		if (skip === 0 && count === data.length) {
+			return wrapped;
 		}
 
-		if (totalCount !== undefined && response.count !== totalCount) {
+		// Ensure the total doesn't change mid-pagination
+		if (expectedTotal !== undefined && count !== expectedTotal) {
 			throw new NodeOperationError(
 				ctx.getNode(),
 				'synchronization error: result count changed during pagination',
 			);
 		}
-		totalCount = response.count;
+		expectedTotal = count;
 
-		result.push.apply(result, data);
-		take = Math.min(take, response.count - result.length);
-	} while (take > 0);
+		result.push.apply(result, wrapped);
+
+		// Stop if we've hit the limit
+		if (limit && result.length >= limit) break;
+
+		// Stop if we've collected everything
+		if (result.length >= count) break;
+
+		skip = result.length;
+		take = Math.min(PAGE_SIZE, count - result.length);
+	}
 
 	return result;
 }

packages/nodes-base/nodes/DataTable/common/utils.ts

@@ -44,7 +44,7 @@ export async function getDataTableProxyExecute(
 
 export async function getDataTableProxyLoadOptions(
 	ctx: ILoadOptionsFunctions,
-): Promise<IDataStoreProjectService> {
+): Promise<IDataStoreProjectService | undefined> {
 	if (ctx.helpers.getDataStoreProxy === undefined)
 		throw new NodeOperationError(
 			ctx.getNode(),
@@ -55,6 +55,10 @@ export async function getDataTableProxyLoadOptions(
 		extractValue: true,
 	}) as string;
 
+	if (!dataStoreId) {
+		return;
+	}
+
 	return await ctx.helpers.getDataStoreProxy(dataStoreId);
 }
 

packages/workflow/src/interfaces.ts

@@ -1435,6 +1435,7 @@ export interface ResourceMapperTypeOptionsBase {
 	noFieldsError?: string;
 	multiKeyMatch?: boolean;
 	supportAutoMap?: boolean;
+	hideNoDataError?: boolean; // Hide "No data found" error when no fields are available
 	matchingFieldsLabels?: {
 		title?: string;
 		description?: string;