On Sat, 26 Sep 2009 14:54:24 -0400, justin wrote about Re: [SQL] simple (?) join:
[snip] >Quoting Gary >"How can I select all from orders and the last (latest) entry from the >orders_log?" In that case, a simple Cartesian product will do: SELECT o.*, maxi.ts FROM orders AS o, (SELECT MAX(ol_timestamp) AS ts FROM orders_log) AS maxi; Since the cardinality of the subquery "maxi" is 1, it will give a result set with cardinality of the complete orders table. I don't understand why anybody would want to do that. [De gustibus ... ] -- Regards, Dave [RLU #314465] ======================================================================= david.w.n...@ntlworld.com (David W Noon) ======================================================================= -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
