Improve migration query speed by using user.id (indexed) instead of previous user.user_id (not indexed when query executed) - refs BT#11399

app/Migrations/Schema/V110/Version20150603181728.php

@@ -57,14 +57,14 @@ class Version20150603181728 extends AbstractMigrationChamilo
 
         $this->addSql("DELETE FROM c_item_property WHERE session_id IS NOT NULL and session_id <> 0 AND session_id NOT IN (SELECT id FROM session)");
         $this->addSql("DELETE FROM c_item_property WHERE to_group_id IS NOT NULL AND to_group_id <> 0 AND to_group_id NOT IN (SELECT iid FROM c_group_info)");
-        $this->addSql("DELETE FROM c_item_property WHERE to_user_id IS NOT NULL and to_user_id <> 0 AND  to_user_id NOT IN (SELECT user_id FROM user)");
+        $this->addSql("DELETE FROM c_item_property WHERE to_user_id IS NOT NULL and to_user_id <> 0 AND  to_user_id NOT IN (SELECT id FROM user)");
         $this->addSql("DELETE FROM c_item_property WHERE to_user_id IS NOT NULL AND to_user_id <> 0 AND to_user_id NOT IN (SELECT id FROM user)");
         $this->addSql("DELETE FROM c_item_property WHERE insert_user_id IS NOT NULL AND insert_user_id <> 0 AND insert_user_id NOT IN (SELECT id FROM user)");
 
         // Remove inconsistencies about non-existing courses
         $this->addSql("DELETE FROM c_item_property WHERE c_id NOT IN (SELECT id FROM course)");
         // Remove inconsistencies about non-existing users
-        $this->addSql("DELETE FROM course_rel_user WHERE user_id NOT IN (SELECT user_id FROM user)");
+        $this->addSql("DELETE FROM course_rel_user WHERE user_id NOT IN (SELECT id FROM user)");
 
         $this->addSql("DELETE FROM c_item_property WHERE c_id NOT IN (SELECT id FROM course)");
         $this->addSql("UPDATE c_item_property SET to_group_id = NULL WHERE to_group_id = 0");