== Why is this an issue? The performance of queries made against large database tables is considerably improved when the columns in the ``++where++`` clause are indexed. If all the columns in the ``++where++`` clause are included in an index, then the selection can be made directly against the index, but using even a single indexed column can improve performance. Therefore, indexes should be created on large tables to improve query performance. ifdef::env-github,rspecator-view[] ''' == Implementation Specification (visible only on this page) === Message Add an index on at least one of the columns in this query. ''' == Comments And Links (visible only on this page) === on 25 Aug 2014, 07:32:20 Freddy Mallet wrote: @Ann, according to this RSPEC, the COBOL language is covered but I don't see the relating Jira ticket in the COBOL project ? === on 25 Aug 2014, 18:59:52 Ann Campbell wrote: \[~freddy.mallet] this is our beta rule that's we're waiting on client feedback for. It was initially implemented w/out a ticket, so there's not one to tie it to. I suppose we could create a ticket to update the description...? endif::env-github,rspecator-view[]