When reviewing execution statistics, I am frequently interested in the behavior of "classes" of queries, rather than individual queries, for example queries which
- Contain a join - Touch a specific column - Use POSIX regular expressions AFAIK this sort of summary/rollup information can't be computed reliably from pg_stat_statements because of rows being discarded in the face of a large number of (post normalization/jumble) distinct statements. Is there a way to retrieve these kinds of statistics in Postgres today? Thanks, Jacob
