fix(core): Fix sorting of executions not working on postgres and mysql (#15423)

packages/@n8n/db/src/repositories/execution.repository.ts

@@ -1048,13 +1048,32 @@ export class ExecutionRepository extends Repository<ExecutionEntity> {
 			subQuery.leftJoin('execution.annotation', 'annotation');
 		}
 
-		return this.manager
+		const qb = this.manager
 			.createQueryBuilder()
 			.select(['e.*', 'ate.id AS "annotation_tags_id"', 'ate.name AS "annotation_tags_name"'])
 			.from(`(${subQuery.getQuery()})`, 'e')
 			.setParameters(subQuery.getParameters())
 			.leftJoin(AnnotationTagMapping, 'atm', 'atm.annotationId = e.annotation_id')
 			.leftJoin(AnnotationTagEntity, 'ate', 'ate.id = atm.tagId');
+
+		// Sort the final result after the joins again, because there is no
+		// guarantee that the order is unchanged after performing joins. Especially
+		// postgres and MySQL returned to the natural order again, listing
+		// executions in the order they were created.
+		if (query.kind === 'range') {
+			if (query.order?.startedAt === 'DESC') {
+				const table = qb.escape('e');
+				const startedAt = qb.escape('startedAt');
+				const createdAt = qb.escape('createdAt');
+				qb.orderBy({ [`COALESCE(${table}.${startedAt}, ${table}.${createdAt})`]: 'DESC' });
+			} else if (query.order?.top) {
+				qb.orderBy(`(CASE WHEN e.status = '${query.order.top}' THEN 0 ELSE 1 END)`);
+			} else {
+				qb.orderBy({ 'e.id': 'DESC' });
+			}
+		}
+
+		return qb;
 	}
 
 	async getAllIds() {