On 15 Nov 2001, at 22:32, Carsten H. Pedersen wrote: > > Thanks for the response, but I think you missed the key > > collection_field_value right under the primary key above. > > You're right -- Sorry. Have you tried COUNT'ing something > other than *? i.e. document_id or resource_id?
I tried it. It makes no difference. This seems to be a bug, or there's something wrong with my understanding of the documentation. I have the query SELECT collection_id, tcml_field_id, value, COUNT(*) FROM document_data_pm GROUP BY collection_id, tcml_field_id, value where the document_data_pm table has the index KEY `collection_field_value` (`collection_id`,`tcml_field_id`,`value`(12)) What would prevent MySQL from using the index? By the way, I'm using version 3.23.44 on Red Hat Linux. -- Keith C. Ivey <[EMAIL PROTECTED]> Washington, DC --------------------------------------------------------------------- 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
