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author	Tom Lane <tgl@sss.pgh.pa.us>
	Fri, 8 Oct 2010 00:00:28 +0000 (20:00 -0400)
committer	Tom Lane <tgl@sss.pgh.pa.us>
	Fri, 8 Oct 2010 00:00:28 +0000 (20:00 -0400)
commit	3ba11d3df2115b04171a8eda8e0389e02578d8d0
tree	9ae749f1499b9e0e00032272d7a5d1c3f1266c02	tree
parent	694c56af2b586551afda624901d6dec951b58027	commit \| diff

Teach CLUSTER to use seqscan-and-sort when it's faster than indexscan.

... or at least, when the planner's cost estimates say it will be faster.

Leonardo Francalanci, reviewed by Itagaki Takahiro and Tom Lane

14 files changed:

doc/src/sgml/ref/cluster.sgml		diff \| blob \| blame \| history
src/backend/commands/cluster.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/plan/planmain.c		diff \| blob \| blame \| history
src/backend/optimizer/plan/planner.c		diff \| blob \| blame \| history
src/backend/optimizer/prep/prepunion.c		diff \| blob \| blame \| history
src/backend/optimizer/util/pathnode.c		diff \| blob \| blame \| history
src/backend/optimizer/util/plancat.c		diff \| blob \| blame \| history
src/backend/utils/sort/tuplesort.c		diff \| blob \| blame \| history
src/include/optimizer/cost.h		diff \| blob \| blame \| history
src/include/optimizer/plancat.h		diff \| blob \| blame \| history
src/include/optimizer/planner.h		diff \| blob \| blame \| history
src/include/utils/tuplesort.h		diff \| blob \| blame \| history

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