Peter Eisentraut wrote: > How about having the tag not be a column name but a row entry. So you'd > do something like > > SELECT * FROM pg_stat_sql WHERE tag = 'ALTER VIEW'; > > That way, we don't have to keep updating (and re-debating) this when new > command types or subtypes are added. And queries written for future > versions will not fail when run against old servers.
Yeah, good idea. Let's also discuss the interface from the stats collector. Currently we have some 20 new SQL functions, all alike, each loading the whole data and returning a single counter, and then the view invokes each function separately. That doesn't seem great to me. How about having a single C function that returns the whole thing as a SRF instead, and the view is just a single function invocation -- something like pg_lock_status filling pg_locks in one go. Another consideration is that the present patch lumps together all ALTER cases in a single counter. This isn't great, but at the same time we don't want to bloat the stat files by having hundreds of counters per database, do we? -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers