The following bug has been logged on the website:
Bug reference: 7511
Logged by: Adrian Dries
Email address: i@avdd.co
PostgreSQL version: Unsupported/Unknown
Operating system: any
Description: =
In trying 9.2 I find pg_stat_activity.procpid has been renamed to pid.
http://git.postgresql.org/gitweb/?p=3Dpostgresql.git;a=3Dcommitdiff;h=3D4f4=
2b546fd87a80be30c53a0f2c897acb826ad52
It seems the premise of this is
If we're going to rename current_query to query--what Scott's patch does
here--that will force all code using pg_stat_activity to be rewritten. This
seems like the perfect time to also change "procpid" to "pid", finally blow
away that wart.
A premise that is untrue: changing a subset of columns on a relation does
not force "all code" using that relation to be rewritten:
SELECT procpid FROM pg_stat_activity WHERE procpid <> pg_backend_pid()