Avoid unnecessary single-child Append nodes. Before commit d3cc37f1d801a6b5cad9bf179274a8, an inheritance parent whose only children were temp tables of other sessions would end up as a simple scan of the parent; but with that commit, we end up with an Append node, per a report from Ashutosh Bapat. Tweak the logic so that we go back to the old way, and update the function header comment for partitioning while we're at it.
Ashutosh Bapat, reviewed by Amit Langote and adjusted by me. Discussion: http://postgr.es/m/CAFjFpReWJr1yTkHU=oqimbmcycmosw3vpr39rbuq_ovwdfb...@mail.gmail.com Branch ------ REL_10_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/17a2a27b49ae19a1002b8230a6ceeef53082211e Modified Files -------------- src/backend/optimizer/prep/prepunion.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
