Hi Jonah, Just a postscript. It is important to check both ways. Because (sometimes) vice versa is not necessarily true. Case in point below:
blitzen=> select * from foo blitzen-> except blitzen-> select * from moo; alleleid | markerid | value | datecreated | datereplaced ----------+----------+-------+-------------+-------------- (0 rows) blitzen=> blitzen=> select * from moo blitzen-> except blitzen-> select * from foo; some_id | anothrid | value | datecreated | datereplaced ----------+----------+-------+-------------------------+--------------------- 2892473 | 2810329 | t | 2008-03-12 14:37:18.165 | 3000-01-01 12:00:00 (1 row) Regards, Tena Sakai [EMAIL PROTECTED] -----Original Message----- From: Jonah H. Harris [mailto:[EMAIL PROTECTED] Sent: Wed 3/19/2008 3:39 PM To: Tena Sakai Cc: pgsql-sql@postgresql.org Subject: Re: [SQL] compare 2 tables in sql On Wed, Mar 19, 2008 at 1:56 PM, Tena Sakai <[EMAIL PROTECTED]> wrote: > Is there a sql way to compare (in a diff/cmp sense) > 2 tables? For example, SELECT * FROM foo EXCEPT SELECT * FROM moo; -- Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324 EnterpriseDB Corporation | fax: 732.331.1301 499 Thornall Street, 2nd Floor | [EMAIL PROTECTED] Edison, NJ 08837 | http://www.enterprisedb.com/
