It would really be nice if pg_class were altered to add two new columns: relcreatedat & relmoddat.
Both would be of type timestamp. relcreatedat would contain the timestamp the object was created. Likewise, relmoddat would contain the last timestamp the object was altered / modified.
This would be very useful for user tables that are meant to exist for only a specific length of time. eg: 1 month.
Then a simple:
SELECT relname
FROM pg_class
WHERE current_timestamp::date - relcreatedat::date > 30
AND relname LIKE ‘tmp_%’;
Would show possible expired tables.
Likewise, relmoddat would be useful for determining when someone made changes to a table, index, view, etc.
Melvin Davidson – DBA
501-3586
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