From 30e35a84113609f929ec8a569c15bc4134dae845 Mon Sep 17 00:00:00 2001
From: Benjamin Gaussorgues <benjamin.gaussorgues@nextcloud.com>
Date: Wed, 18 Feb 2026 15:46:50 +0100
Subject: [PATCH] fix(perf): use index when deleting old previews

Signed-off-by: Benjamin Gaussorgues <benjamin.gaussorgues@nextcloud.com>
---
 lib/private/Preview/PreviewMigrationService.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/private/Preview/PreviewMigrationService.php b/lib/private/Preview/PreviewMigrationService.php
index d3db56fc69c..7c7581c6318 100644
--- a/lib/private/Preview/PreviewMigrationService.php
+++ b/lib/private/Preview/PreviewMigrationService.php
@@ -161,12 +161,16 @@ class PreviewMigrationService {
 	private function deleteFolder(string $path): void {
 		$current = $path;
 
+		$rootFolderId = $this->rootFolder->getMountPoint()->getNumericStorageId();
 		while (true) {
 			$appDataPath = $this->previewRootPath . $current;
 			$qb = $this->connection->getQueryBuilder();
 			$qb->delete('filecache')
 				->where($qb->expr()->eq('path_hash', $qb->createNamedParameter(md5($appDataPath))))
-				->hintShardKey('storage', $this->rootFolder->getMountPoint()->getNumericStorageId())
+				->andWhere($qb->expr()->eq(
+					'storage',
+					$qb->createNamedParameter($rootFolderId),
+				))
 				->executeStatement();
 
 			$current = dirname($current);