2011/7/23 Yeb Havinga <yebhavinga@gmail.com>:
> On 2011-07-22 16:17, Hitoshi Harada wrote:
>>
>> :(
>> I updated the patch. Could you try attached once more? The "issafe"
>> switch seems wrong.
>
> Works like a charm :-). However, now there is always a copyObject of a
> subquery even when the subquery is not safe for qual pushdown. The problem
> with the previous issafe was that it was only assigned for
> rel->baserestrictinfo != NIL. If it is assigned before the if statement, it
> still works. See attached patch that avoids subquery copy for unsafe
> subqueries, and also exits best_inner_subqueryscan before palloc of
> differenttypes in case of unsafe queries.
Ah, yeah, right. Too quick fix bloated my brain :P Thanks for testing!
I'll check it more.
--
Hitoshi Harada
