Horiguchi-san, On 2015/11/12 16:10, Kyotaro HORIGUCHI wrote:
I really don't see why you're fighting on this point. Making this a generic feature will require only a few extra lines of code for FDW authors. If this were going to cause some great inconvenience for FDW authors, then I'd agree it isn't worth it. But I see zero evidence that this is actually the case.
Really? I think there would be not a little burden on an FDW author; when postgres_fdw delegates to the subplan to the remote server, for example, it would need to create a remote join query by looking at tuples possibly fetched and stored in estate->es_epqTuple[], send the query and receive the result during the callback routine.
Do you mind that FDW cannot generate a plan so that make a tuple from eqpTules then apply fdw_quals from predefined executor nodes?
No. Please see my previous email. Sorry for my unfinished email. Best regards, Etsuro Fujita -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
