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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/nodes/nodeFuncs.h | |
| parent | 607b2be7bb230ea4c558cb3101794f94de35ab85 (diff) | |
| download | postgresql-44d5be0e5308e951c0c5dc522b4bcacf2bcbc476.tar.gz | |
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/nodes/nodeFuncs.h')
| -rw-r--r-- | src/include/nodes/nodeFuncs.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/include/nodes/nodeFuncs.h b/src/include/nodes/nodeFuncs.h index 5ea2efe81e..bf24297eaa 100644 --- a/src/include/nodes/nodeFuncs.h +++ b/src/include/nodes/nodeFuncs.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/nodeFuncs.h,v 1.28 2008/08/28 23:09:48 tgl Exp $ + * $PostgreSQL: pgsql/src/include/nodes/nodeFuncs.h,v 1.29 2008/10/04 21:56:55 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -18,8 +18,11 @@ /* flags bits for query_tree_walker and query_tree_mutator */ #define QTW_IGNORE_RT_SUBQUERIES 0x01 /* subqueries in rtable */ -#define QTW_IGNORE_JOINALIASES 0x02 /* JOIN alias var lists */ -#define QTW_DONT_COPY_QUERY 0x04 /* do not copy top Query */ +#define QTW_IGNORE_CTE_SUBQUERIES 0x02 /* subqueries in cteList */ +#define QTW_IGNORE_RC_SUBQUERIES 0x03 /* both of above */ +#define QTW_IGNORE_JOINALIASES 0x04 /* JOIN alias var lists */ +#define QTW_EXAMINE_RTES 0x08 /* examine RTEs */ +#define QTW_DONT_COPY_QUERY 0x10 /* do not copy top Query */ extern Oid exprType(Node *expr); @@ -49,4 +52,7 @@ extern bool query_or_expression_tree_walker(Node *node, bool (*walker) (), extern Node *query_or_expression_tree_mutator(Node *node, Node *(*mutator) (), void *context, int flags); +extern bool raw_expression_tree_walker(Node *node, bool (*walker) (), + void *context); + #endif /* NODEFUNCS_H */ |