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(parent: 681673e) | patch
Don't call IS_DUMMY_REL() when cheapest_total_path might be junk.
authorRobert Haas <rhaas@postgresql.org>
Fri, 30 Mar 2018 15:37:48 +0000 (11:37 -0400)
committerRobert Haas <rhaas@postgresql.org>
Fri, 30 Mar 2018 15:40:41 +0000 (11:40 -0400)
commit96030f9a481a78483945447e122a387902a4549b
tree8a0921423071c6e09417c6870a52913b36c8d70etree
parent681673e0c6c21a876e6ef7680e2116de60cf6286commit | diff
Don't call IS_DUMMY_REL() when cheapest_total_path might be junk.

Unlike the previous coding, this might result in a Gather per Append
subplan when the target list is parallel-restricted, but such a plan
is probably worth considering in that case, since a single Gather
on top of the entire Append is impossible.

Per Andres Freund and the buildfarm.

Discussion: http://postgr.es/m/20180330050351.bmxx4cdtz67czjda@alap3.anarazel.de
src/backend/optimizer/plan/planner.c diff | blob | blame | history
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