Sim Zacks wrote:
> I would use 2 left joins and use the where condition to make sure one
> of them is true, such as:
>
> select big_table.* from
> big_table left join little_table as l1 on big_table.y1=l1.y and
> l1.x=10
> left join little_table as l2 on big_table.y2=l2.y and l1.x=10
> where l1.p_key is not null and l2.p_key is not null
>
> I have never tried this in postgresql, but in my experience with
> various other DB engines it is a lot faster then using an or in the
> join and faster then a union.
Wow! Thanks! That certainly did the trick.
Mike Mascari
