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Tom Lane 44d5be0e53 Implement SQL-standard WITH clauses, including WITH RECURSIVE. 
There are some unimplemented aspects: recursive queries must use UNION ALL
(should allow UNION too), and we don't have SEARCH or CYCLE clauses.
These might or might not get done for 8.4, but even without them it's a
pretty useful feature.

There are also a couple of small loose ends and definitional quibbles,
which I'll send a memo about to pgsql-hackers shortly.  But let's land
the patch now so we can get on with other development.

Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane
 		2008-10-04 21:56:55 +00:00
..
Makefile Refactor backend makefiles to remove lots of duplicate code 2008-02-19 10:30:09 +00:00
allpaths.c Implement SQL-standard WITH clauses, including WITH RECURSIVE. 2008-10-04 21:56:55 +00:00
clausesel.c Implement SQL-standard WITH clauses, including WITH RECURSIVE. 2008-10-04 21:56:55 +00:00
costsize.c Implement SQL-standard WITH clauses, including WITH RECURSIVE. 2008-10-04 21:56:55 +00:00
equivclass.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
indxpath.c Skip opfamily check in eclass_matches_any_index() when the index isn't a 2008-09-12 14:56:13 +00:00
joinpath.c Implement SQL-standard WITH clauses, including WITH RECURSIVE. 2008-10-04 21:56:55 +00:00
joinrels.c Add some defenses against constant-FALSE outer join conditions. Since 2008-08-17 19:40:11 +00:00
orindxpath.c Implement SEMI and ANTI joins in the planner and executor. (Semijoins replace 2008-08-14 18:48:00 +00:00
pathkeys.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
tidpath.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00