pgsql-server/src backend/executor/nodeHash.c b ...

CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl(at)postgresql(dot)org 02/11/29 19:08:22

Modified files:
src/backend/executor: nodeHash.c nodeHashjoin.c
src/backend/nodes: copyfuncs.c outfuncs.c
src/backend/optimizer/path: costsize.c joinpath.c
src/backend/optimizer/plan: createplan.c subselect.c
src/backend/optimizer/util: pathnode.c
src/include/executor: hashjoin.h nodeHash.h
src/include/nodes: execnodes.h plannodes.h relation.h

Log message:
Upgrade planner and executor to allow multiple hash keys for a hash join,
instead of only one. This should speed up planning (only one hash path
to consider for a given pair of relations) as well as allow more effective
hashing, when there are multiple hashable joinclauses.