> A pointer to the appropriate syntax for retrieving the entire row when > count(loc_name, sample_date, param) > 1 would be much appreciated. > > Rich >
Select * From table Natural Inner join ( SELECT loc_name, sample_date, param, Count(*) as duplicate_count FROM table Group by loc_name, sample_date, param ) grouped Where duplicate_count > 1 ; You first group and count on the candidate key and then effectively self-joint that result back onto the original table. natural join is short-hand for cases where the two joining table use the same name for semantically identical field. Much easier than saying "t1.field1 = t2.field1 AND t1.field2 = t2.field2 AND etc..." David J. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
