"Adam Tauno Williams" <[EMAIL PROTECTED]> writes: > "AS" works in Informix, and I believe, in DB2 as well. So it is at > least pretty common; I'm not saying it is correct. Since Informix > predates M$-SQL they at least didn't invent it.
AS works in Postgres too. But the defined aliases are only in the resulting output columns, not in scope for the where clause. In fact the expressions used aren't even evaluated for rows which don't match the where clause which is pretty important if those expressions are subqueries or volatile functions. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
