Tom Lane e2fa76d80b Use parameterized paths to generate inner indexscans more flexibly. ... This patch fixes the planner so that it can generate nestloop-with- inner-indexscan plans even with one or more levels of joining between the indexscan and the nestloop join that is supplying the parameter. The executor was fixed to handle such cases some time ago, but the planner was not ready. This should improve our plans in many situations where join ordering restrictions formerly forced complete table scans. There is probably a fair amount of tuning work yet to be done, because of various heuristics that have been added to limit the number of parameterized paths considered. However, we are not going to find out what needs to be adjusted until the code gets some real-world use, so it's time to get it in there where it can be tested easily. Note API change for index AM amcostestimate functions. I'm not aware of any non-core index AMs, but if there are any, they will need minor adjustments.		2012-01-27 19:26:38 -05:00
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src	Use parameterized paths to generate inner indexscans more flexibly.	2012-01-27 19:26:38 -05:00
KNOWN_BUGS	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
MISSING_FEATURES	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
Makefile	Add maintainer-check target	2011-03-28 22:56:52 +03:00
TODO	Update URL.	2008-08-21 20:15:31 +00:00
bug.template	Stamp HEAD as 9.2devel.	2011-06-11 17:46:49 -04:00