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(parent: ee4c187) | patch
If we expect a hash join to be performed in multiple batches, suppress
2009年3月26日 17:15:35 +0000 (17:15 +0000)
2009年3月26日 17:15:35 +0000 (17:15 +0000)
commit f38fbf31f5719bb84b18042a7f415a4f20db2bfa
If we expect a hash join to be performed in multiple batches, suppress
"physical tlist" optimization on the outer relation (ie, force a projection
step to occur in its scan). This avoids storing useless column values when
the outer relation's tuples are written to temporary batch files.

Modified version of a patch by Michael Henderson and Ramon Lawrence.
src/backend/nodes/outfuncs.c diff | blob | blame | history
src/backend/optimizer/path/costsize.c diff | blob | blame | history
src/backend/optimizer/plan/createplan.c diff | blob | blame | history
src/backend/optimizer/util/pathnode.c diff | blob | blame | history
src/include/nodes/relation.h diff | blob | blame | history
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