Allow executor startup pruning to prune all child nodes. Previously, if the startup pruning logic proved that all child nodes of an Append or MergeAppend could be pruned, we still kept one, just to keep EXPLAIN from failing. The previous commit removed the ruleutils.c limitation that required this kluge, so drop it. That results in less-confusing EXPLAIN output, as per a complaint from Yuzuko Hosoya.
David Rowley Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/5935917ce59e2e613ac7a4b54ed49a7b9f8f28ac Modified Files -------------- src/backend/executor/nodeAppend.c | 42 ++++---------- src/backend/executor/nodeMergeAppend.c | 30 ++-------- src/include/nodes/execnodes.h | 3 - src/test/regress/expected/partition_prune.out | 83 ++++++++++++++------------- src/test/regress/sql/partition_prune.sql | 15 +++-- 5 files changed, 69 insertions(+), 104 deletions(-)
