>
> If you try the multi-column index (which is a good idea), be sure that "id"
> is the last of the three columns, since that's the column on which you have
> an inequality test rather than an equality test; eg,
> (company_id,source_model_name,id).
>
Interesting. I would have thought the order of the fields would not
matter. I don't have to rewrite the query do I?