postgres

History

Tom Lane 656b1e8cf3 Further fixes for degenerate outer join clauses. Further testing revealed that commit `f69b4b9495` was still a few bricks shy of a load: minor tweaking of the previous test cases resulted in the same wrong-outer-join-order problem coming back. After study I concluded that my previous changes in make_outerjoininfo() were just accidentally masking the problem, and should be reverted in favor of forcing syntactic join order whenever an upper outer join's predicate doesn't mention a lower outer join's LHS. This still allows the chained-outer-joins style that is the normally optimizable case. I also tightened things up some more in join_is_legal(). It seems to me on review that what's really happening in the exception case where we ignore a mismatched special join is that we're allowing the proposed join to associate into the RHS of the outer join we're comparing it to. As such, we should always insist that the proposed join be a left join, which eliminates a bunch of rather dubious argumentation. The case where we weren't enforcing that was the one that was already known buggy anyway (it had a violatable Assert before the aforesaid commit) so it hardly deserves a lot of deference. Back-patch to all active branches, like the previous patch. The added regression test case failed in all branches back to 9.1, and I think it's only an unrelated change in costing calculations that kept 9.0 from choosing a broken plan.		11 years ago
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backend	Further fixes for degenerate outer join clauses.	11 years ago
bin	Fix pg_dump to dump shell types.	11 years ago
include	Fix bogus "out of memory" reports in tuplestore.c.	11 years ago
interfaces	Oops, PQExpBufferDataBroken doesn't exist before 9.2.	11 years ago
makefiles	Don't use deprecated dllwrap on Cygwin.	12 years ago
pl	Fix (some of) pltcl memory usage	11 years ago
port	Fix a low-probability crash in our qsort implementation.	11 years ago
template	AIX: Test the -qlonglong option before use.	11 years ago
test	Further fixes for degenerate outer join clauses.	11 years ago
timezone	Update time zone data files to tzdata release 2015d.	11 years ago
tools	Turn install.bat into a pure one line wrapper fort he perl script.	11 years ago
tutorial	Remove tabs after spaces in C comments	12 years ago
.gitignore	…
DEVELOPERS	…
Makefile	…
Makefile.global.in	Make numeric form of PG version number readily available in Makefiles.	11 years ago
Makefile.shlib	Unlink static libraries before rebuilding them.	11 years ago
bcc32.mak	…
nls-global.mk	…
win32.mak	…