Storage: optimize sql list operation (#53009)

pkg/infra/filestorage/db_filestorage.go

@@ -33,6 +33,11 @@ type file struct {
 	MimeType             string    `xorm:"mime_type"`
 }
 
+var (
+	fileColsNoContents = []string{"path", "path_hash", "parent_folder_path_hash", "etag", "cache_control", "content_disposition", "updated", "created", "size", "mime_type"}
+	allFileCols        = append([]string{"contents"}, fileColsNoContents...)
+)
+
 type fileMeta struct {
 	PathHash string `xorm:"path_hash"`
 	Key      string `xorm:"key"`
@@ -339,6 +344,12 @@ func (s dbFileStorage) List(ctx context.Context, folderPath string, paging *Pagi
 			sess.Where("path > ?", cursor)
 		}
 
+		if options.WithContents {
+			sess.Cols(allFileCols...)
+		} else {
+			sess.Cols(fileColsNoContents...)
+		}
+
 		if err := sess.Find(&foundFiles); err != nil {
 			return err
 		}