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.
I'm trying to keep a table of summary statistics for another table,
because I expected that generating the counts would take a while.
But I never expected the query to take hours, as it does. On
examination, I see that the query is not using an index, even
though the table has an index on
On 15 Nov 2001, at 21:59, Carsten H. Pedersen wrote:
PRIMARY KEY
(`collection_id`,`document_id`,`tcml_field_id`,`order_number`),
KEY `collection_field_value`
(`collection_id`,`tcml_field_id`,`value`(12)),
KEY `value` (`value`(12)),
KEY `resource_id` (`resource_id`)
)
On 15 Nov 2001, at 21:59, Carsten H. Pedersen wrote:
PRIMARY KEY
(`collection_id`,`document_id`,`tcml_field_id`,`order_number`),
KEY `collection_field_value`
(`collection_id`,`tcml_field_id`,`value`(12)),
KEY `value` (`value`(12)),
KEY `resource_id` (`resource_id`)
