Do execGrouping.c via expression eval machinery. This has a performance benefit on own, although not hugely so. The primary benefit is that it will allow for to JIT tuple deforming and comparator invocations.
Author: Andres Freund Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/773aec7aa98abd38d6d9435913bb8e14e392c274 Modified Files -------------- src/backend/executor/execExpr.c | 118 +++++++++++++++ src/backend/executor/execExprInterp.c | 29 ++++ src/backend/executor/execGrouping.c | 236 +++++++----------------------- src/backend/executor/nodeAgg.c | 143 +++++++++++------- src/backend/executor/nodeGroup.c | 24 +-- src/backend/executor/nodeRecursiveunion.c | 5 +- src/backend/executor/nodeSetOp.c | 48 +++--- src/backend/executor/nodeSubplan.c | 81 +++++++++- src/backend/executor/nodeUnique.c | 31 ++-- src/backend/executor/nodeWindowAgg.c | 38 +++-- src/backend/utils/adt/orderedsetaggs.c | 56 +++---- src/include/executor/execExpr.h | 1 + src/include/executor/executor.h | 28 ++-- src/include/executor/nodeAgg.h | 12 +- src/include/nodes/execnodes.h | 14 +- 15 files changed, 498 insertions(+), 366 deletions(-)
