Tom Lane e549722a8b Get rid of the rather fuzzily defined FlattenedSubLink node type in favor of ... making pull_up_sublinks() construct a full-blown JoinExpr tree representation of IN/EXISTS SubLinks that it is able to convert to semi or anti joins. This makes pull_up_sublinks() a shade more complex, but the gain in semantic clarity is worth it. I still have more to do in this area to address the previously-discussed problems, but this commit in itself fixes at least one bug in HEAD, as shown by added regression test case.		2009-02-25 03:30:38 +00:00
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Makefile	Refactor backend makefiles to remove lots of duplicate code	2008-02-19 10:30:09 +00:00
prepjointree.c	Get rid of the rather fuzzily defined FlattenedSubLink node type in favor of	2009-02-25 03:30:38 +00:00
prepqual.c	Update copyright for 2009.	2009-01-01 17:24:05 +00:00
preptlist.c	Update copyright for 2009.	2009-01-01 17:24:05 +00:00
prepunion.c	Get rid of the rather fuzzily defined FlattenedSubLink node type in favor of	2009-02-25 03:30:38 +00:00