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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-04 21:56:55 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-10-04 21:56:55 +0000 |
| commit | 44d5be0e5308e951c0c5dc522b4bcacf2bcbc476 (patch) | |
| tree | 516f1c70436225751f631e7e686f7ea61b3db9df /src/include/optimizer/subselect.h | |
| parent | 607b2be7bb230ea4c558cb3101794f94de35ab85 (diff) | |
| download | postgresql-44d5be0e5308e951c0c5dc522b4bcacf2bcbc476.tar.gz postgresql-44d5be0e5308e951c0c5dc522b4bcacf2bcbc476.zip | |
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
Diffstat (limited to 'src/include/optimizer/subselect.h')
| -rw-r--r-- | src/include/optimizer/subselect.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/optimizer/subselect.h b/src/include/optimizer/subselect.h index 97e230a2dbf..e227221e946 100644 --- a/src/include/optimizer/subselect.h +++ b/src/include/optimizer/subselect.h @@ -5,7 +5,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/optimizer/subselect.h,v 1.33 2008/08/17 01:20:00 tgl Exp $ + * $PostgreSQL: pgsql/src/include/optimizer/subselect.h,v 1.34 2008/10/04 21:56:55 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -15,6 +15,7 @@ #include "nodes/plannodes.h" #include "nodes/relation.h" +extern void SS_process_ctes(PlannerInfo *root); extern bool convert_ANY_sublink_to_join(PlannerInfo *root, SubLink *sublink, Relids available_rels, Node **new_qual, List **fromlist); @@ -28,5 +29,6 @@ extern void SS_finalize_plan(PlannerInfo *root, Plan *plan, bool attach_initplans); extern Param *SS_make_initplan_from_plan(PlannerInfo *root, Plan *plan, Oid resulttype, int32 resulttypmod); +extern int SS_assign_worktable_param(PlannerInfo *root); #endif /* SUBSELECT_H */ |