Tom Lane eb22950510 Fix PlaceHolderVar mechanism's interaction with outer joins. ... The point of a PlaceHolderVar is to allow a non-strict expression to be evaluated below an outer join, after which its value bubbles up like a Var and can be forced to NULL when the outer join's semantics require that. However, there was a serious design oversight in that, namely that we didn't ensure that there was actually a correct place in the plan tree to evaluate the placeholder :-(. It may be necessary to delay evaluation of an outer join to ensure that a placeholder that should be evaluated below the join can be evaluated there. Per recent bug report from Kirill Simonov. Back-patch to 8.4 where the PlaceHolderVar mechanism was introduced.		2010-09-28 14:19:00 -04:00
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clauses.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
cost.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_copy.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_gene.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_misc.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_mutation.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_pool.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_random.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_recombination.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
geqo_selection.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
joininfo.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
pathnode.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
paths.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
placeholder.h	Fix PlaceHolderVar mechanism's interaction with outer joins.	2010-09-28 14:19:00 -04:00
plancat.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
planmain.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
planner.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
predtest.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
prep.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
restrictinfo.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
subselect.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
tlist.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
var.h	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00