On 23/11/2011 10:56, Капралов Александр wrote: > Query is: > SELECT * FROM a UNION SELECT * FROM b ORDER BY time DESC LIMIT 100 > > how can i get only last 100 row from a and b and then do union. Explain > of select said that all recond selected from a and b. (select * from a order by time desc limit 100) union (select * from b order by time desc limit 100) order by time desc limit 100; BTW "time" is a reserved word AFAIK, so you should enclose it in double-quotes or call the column something else. Ray. -- Raymond O'Donnell :: Galway :: Ireland rod@xxxxxx -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
