3 Commits

Author	SHA1	Message	Date
Tom Lane	7028c13557	Fix an oversight in two different recent patches: nodes that support SRFs ... in their targetlists had better reset ps_TupFromTlist during ReScan calls. There's no need to back-patch here since nodeAgg and nodeGroup didn't even pretend to support SRFs in prior releases.	2008-10-23 15:29:23 +00:00
Tom Lane	0a7abcd4c9	Fix corner case wherein a WorkTableScan node could get initialized before the ... RecursiveUnion to which it refers. It turns out that we can just postpone the relevant initialization steps until the first exec call for the node, by which time the ancestor node must surely be initialized. Per report from Greg Stark.	2008-10-13 00:41:41 +00:00
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