From 2db0c760cd0d0df0595c82d939c8076d7da3d340 Mon Sep 17 00:00:00 2001
From: Juanga Covas <1177241+juangacovas@users.noreply.github.com>
Date: Fri, 24 Sep 2021 23:12:54 +0200
Subject: [PATCH] Index for nid in users table

Considering that class.auth.php, line 306, does a SELECT ... WHERE nid = ... it could be wise to add an unique index for "nid". Query response time very noticeable when you start having +100 users or even less...
---
 mysql.sql | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mysql.sql b/mysql.sql
index ed56e03..e4a8e96 100644
--- a/mysql.sql
+++ b/mysql.sql
@@ -21,5 +21,6 @@ CREATE TABLE `users` (
   `level` enum('user','admin') COLLATE utf8_unicode_ci NOT NULL DEFAULT 'user',
   `twostep` varchar(6) COLLATE utf8_unicode_ci DEFAULT NULL,
   PRIMARY KEY (`id`),
-  UNIQUE KEY `username` (`username`)
+  UNIQUE KEY `username` (`username`),
+  UNIQUE KEY `nid` (`nid`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;