salah jubeh <s_ju...@yahoo.com> writes:
> But, why I can not  use the alias of the select statement ( as in the 
> original 
> post)  in the where clause.     

The select list can only be computed after the where clause has filtered
the rows, so such a thing would be circular.

                        regards, tom lane

-- 
Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

Reply via email to