Re: [HACKERS] modifying views

2008-08-15 Thread Andrew Dunstan
Martijn van Oosterhout wrote: On Thu, Aug 14, 2008 at 05:57:26PM -0500, Decibel! wrote: FWIW, there is desire to be able to re-order columns within real tables, too. But before that can happen we need to divorce presentation order from on-page order (which is actually desirable for oth

Re: [HACKERS] modifying views

2008-08-15 Thread Martijn van Oosterhout
On Thu, Aug 14, 2008 at 05:57:26PM -0500, Decibel! wrote: > FWIW, there is desire to be able to re-order columns within real > tables, too. But before that can happen we need to divorce > presentation order from on-page order (which is actually desirable > for other reasons), but that's an aw

Re: [HACKERS] modifying views

2008-08-14 Thread Decibel!
On Jul 29, 2008, at 9:12 PM, Robert Haas wrote: Unfortunately, it looks to me like a fully general implementation of this feature would be Really Hard, because a CREATE OR REPLACE VIEW command, beyond attempting to add, drop, or retype columns, could also attempt to reorder them. A cursory inspe

[HACKERS] modifying views

2008-07-29 Thread Robert Haas
I've been thinking a little more about modifying views: http://archives.postgresql.org/pgsql-hackers/2008-05/msg00694.php AFAICS, out of all of the things that ALTER TABLE is capable of doing, there are only four that make any sense in the context of views: (1) add a column (2) drop a column (3)