id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
20838,Don't populate $col_info in production,GrahamKelly,nacin,"While profiling WordPress 3.3.2 I noticed that mysql_fetch_field() seemed to be fairly expensive. Upon looking into this I found that the col_info property is being set in wpdb but it does not appear (from some grepping through WP Core and quite a few extensions) that anyone is actually making use of the results (Either from directly accessing $col_info or from calls to get_col_info). In order to improve performance I wrapped the calls in 'if (WP_DEBUG)' which seems to do the trick.

Patch attached.
",enhancement,closed,normal,3.5,Database,3.3.2,normal,fixed,has-patch,joseph@…