From 5ed701e42296ebceb5a29d121879c785bcc92ada Mon Sep 17 00:00:00 2001 From: Yannick Warnier Date: Sat, 5 Jul 2014 15:53:43 -0500 Subject: [PATCH] Add optimization for user_rel_tag table (index) taken from campus.chamilo.org --- documentation/optimization.html | 1 + 1 file changed, 1 insertion(+) diff --git a/documentation/optimization.html b/documentation/optimization.html index fdb5d48746..a4f63c1dfb 100755 --- a/documentation/optimization.html +++ b/documentation/optimization.html @@ -254,6 +254,7 @@ To solve this performance issue, you can execute the following queries manually
 ALTER TABLE lp_item ADD INDEX idx_c_lp_item_cid_lp_id (c_id, lp_id);
 ALTER TABLE lp_item_view ADD INDEX  idx_c_lp_item_view_cid_lp_view_id_lp_item_id (c_id, lp_view_id, lp_item_id);
+ALTER TABLE user_rel_tag ADD INDEX idx_user_rel_tag_user (user_id);
 
In Chamilo 1.9.8, we use the c_item_property table more actively. This causes issues with the reporting pages for the assignments. You can reduce the impact by adding the following index: