On Tue, 2005-04-26 at 13:58 -0400, Ying Lu wrote:
> select * from A left join B using (id) where A.type='apple' and
> A.isExport=true;
>
> "id" is the primary key for both table A & B. If index (type, isExport)
> has been created for table A. In the above query, will this index works?
simplest is just to do an explain.
explain select * from A left join B using (id) where A.type='apple' and
A.isExport=true;
gnari