Re: [HACKERS] subselects

Bruce Momjian wrote:
> 
> OK, a few questions:
> 
>         Should we use sortmerge, so we can use our psort as temp tables,
> or do we use hashunique?
> 
>         How do we pass the query to the optimizer?  How do we represent
> the range table for each, and the links between them in correlated
> subqueries?

My suggestion is just use varlevel in Var and don't put upper query'
relations into subquery range table.

Vadim