On 12 September 2014 15:30, Tom Lane <t...@sss.pgh.pa.us> wrote: > I wrote: >> I think there's another way to think about it: what about saying that >> the query's target relation(s) are subject to pruning, while others >> are not? Then you do not need an executor flag, you just need to >> look at the estate->es_result_relations array (or maybe even only at >> estate->es_result_relation_info). > > After a little bit I remembered there was already a function for this. > So specifically, I'd suggest using ExecRelationIsTargetRelation() > to decide whether to mark the scan as requiring pruning.
Sounds cool. Thanks both, this is sounding like a viable route now. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
