Re: Row counts/data changes. Any catalog table that has this info?

David,

> table_name    #Rows
> cust          1000
> order         5000
> order_detail  9500

If you're willing to live with some inaccuracy, do:

SELECT relname, reltuples FROM pg_class
WHERE relkind='r';

This count gets updated when you do a VACUUM, and is seldom 100% accurate; 
however, if you VACUUM regularly it will be within 5-10%.

-- 
-Josh BerkusAglio Database SolutionsSan Francisco