At 15:30 -0600 1/18/02, Rick Emery wrote: >Is this a bug? I can't find an answer to this question in FAQs or archives. > >CREATE TABLE aa ( a int); >INSERT INTO aa VALUES (1),(2),(3),(2),(4),(5),(1),(6),(3); > >the following : >mysql> select a,count(*) as z from aa where z>1 group by a; > >displays this error: >ERROR 1054: Unknown column 'z' in 'where clause' > >Why isn't z recognized as a column identifier?
As others have pointed out, your query requires a HAVING rather than a WHERE. What hasn't been pointed out, which is worth knowing, is that column aliases cannot be used in *any* WHERE clause. --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
