Remove 'additional' pointer from TupleHashEntryData. Reduces memory required for hash aggregation by avoiding an allocation and a pointer in the TupleHashEntryData structure. That structure is used for all buckets, whether occupied or not, so the savings is substantial.
Discussion: https://postgr.es/m/AApHDvpN4v3t_sdz4dvrv1Fx_ZPw=twsnxuteytryp7lfz5...@mail.gmail.com Reviewed-by: David Rowley <dgrowle...@gmail.com> Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/626df47ad9db809dc8f93330175ab95b75914721 Modified Files -------------- src/backend/executor/execGrouping.c | 17 ++++++++++++----- src/include/executor/executor.h | 5 ++++- src/include/nodes/execnodes.h | 1 - 3 files changed, 16 insertions(+), 7 deletions(-)
