Please use a relevant subject for your posts. On Tue, Feb 08, 2005 at 23:14:57 +0530, Surabhi Ahuja <[EMAIL PROTECTED]> wrote: > i have a table in which duplicate rows occur. > > now i have to remove the duplicates. Please note that however, only the > duplicate rows have to be deleted and not the original one. > > How do i do it?
If the table has oids, then you can delete all but the row with the minimum oid for each set of duplicates. Another option is to do a select distinct into a temp table, a delete and then copy the temp table back. You should also add a constraint so that duplicates can't get back into the table once you have it cleaned up. ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
