]> granicus.if.org Git - postgresql/commit
projects / postgresql / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: ca71c66) | patch
Take OUTER JOIN semantics into account when estimating the size of join
authorTom Lane <tgl@sss.pgh.pa.us>
Fri, 16 Feb 2001 00:03:08 +0000 (00:03 +0000)
committerTom Lane <tgl@sss.pgh.pa.us>
Fri, 16 Feb 2001 00:03:08 +0000 (00:03 +0000)
commitb29f68f611e26377306a9ba2210a589b472c8544
tree00a057a7682b2a727a9445b753af10dde172a3d4tree | snapshot
parentca71c6619086ac3b6e3787c2826363faeab02ac9commit | diff
Take OUTER JOIN semantics into account when estimating the size of join
relations.  It's not very bright, but at least it now knows that
A LEFT JOIN B must produce at least as many rows as are in A ...
src/backend/optimizer/path/costsize.c diff | blob | history
src/backend/optimizer/path/joinrels.c diff | blob | history
src/backend/optimizer/util/relnode.c diff | blob | history
src/include/optimizer/cost.h diff | blob | history
src/include/optimizer/pathnode.h diff | blob | history
Unnamed repository; edit this file 'description' to name the repository.