On Sat, 2003-10-25 at 13:49, Reece Hart wrote:
> Having to explicitly cast criterion is very non-intuitive. Moreover,
> it seems quite straightforward that PostgreSQL might incorporate casts
This is a well-known issue with the query optimizer -- search the
mailing list archives for lots more infor
Here's the basic issue: PostgreSQL doesn't use indexes unless a query criterion is of exactly the same type as the index type. This occurs even when a cast would enable the use of an index and greatly improve performance. I understand that casting is needed to use an index and will therefore af
