INT-17017: Database indexes for improved course deletion performance.

Author: Diego Monroy

db/install.xml

@@ -178,6 +178,9 @@
         <INDEX NAME="userid-forumid" UNIQUE="false" FIELDS="userid, forumid"/>
         <INDEX NAME="userid-discussionid" UNIQUE="false" FIELDS="userid, discussionid"/>
         <INDEX NAME="postid-userid" UNIQUE="false" FIELDS="postid, userid"/>
+        <!-- Open LMS patch: INT-17017. -->
+        <INDEX NAME="forumid" UNIQUE="false" FIELDS="forumid"/>
+        <INDEX NAME="discussionid" UNIQUE="false" FIELDS="discussionid"/>
       </INDEXES>
     </TABLE>
     <TABLE NAME="hsuforum_track_prefs" COMMENT="Tracks each users untracked forums">