Avoid GatherMerge crash when there are no workers. It's unnecessary to return an actual slot when we have no tuple. We can just return NULL, which avoids the risk of indexing into an array that might not contain any elements.
Rushabh Lathia, per a report from Tomas Vondra Discussion: http://postgr.es/m/6ecd6f17-0dcf-1de7-ded8-0de7db1dd...@2ndquadrant.com Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/25dc142a49c60c3107480c487cd8444dc83f9bdf Modified Files -------------- src/backend/executor/nodeGatherMerge.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
