Re: slow index lookup

Anj Adu <fotographs@gmail.com> wrote:

> The combination index works great. Would adding the combination
> index guarantee that the optimizer will choose that index for
> these kind of queries involving the columns in the combination. I
> verified a couple of times and it picked the right index. Just
> wanted to make sure it does that consistently.

It's cost based -- as long as it thinks that approach will be
faster, it will use it.

-Kevin