Added index for performance considerations

database.sql

@@ -1287,7 +1287,8 @@ CREATE TABLE IF NOT EXISTS `user-item` (
 	`pinned` boolean COMMENT 'The item is pinned on the profile page',
 	`notification-type` tinyint unsigned NOT NULL DEFAULT 0 COMMENT '',
 	 PRIMARY KEY(`uid`,`iid`),
-	 INDEX `uid_pinned` (`uid`,`pinned`)
+	 INDEX `uid_pinned` (`uid`,`pinned`),
+	 INDEX `iid_uid` (`iid`,`uid`)
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='User specific item data';
 
 --

static/dbstructure.config.php

@@ -1393,7 +1393,8 @@ return [
 		],
 		"indexes" => [
 			"PRIMARY" => ["uid", "iid"],
-			"uid_pinned" => ["uid", "pinned"]
+			"uid_pinned" => ["uid", "pinned"],
+			"iid_uid" => ["iid", "uid"]
 		]
 	],
 	"worker-ipc" => [