Simon Riggs wrote:
On Wed, 2007-04-04 at 20:55 +0200, Markus Schiltknecht wrote:
Questioning the other way around: do we need any sort of multi-table
indexes at all, or isn't it enough to teach the planner and executor how
to intelligently scan through (possibly) multiple indexes to get what is
requested?
No, I don't think we need multi-table indexes at all.
If we don't have multi-table indexes how do we enforce a primary key
against a partitioned set? What about non primary keys that are just
UNIQUE? What about check constraints that aren't apart of the exclusion?
Joshua D. Drake
The planner already uses the Append node to put together multiple plans.
The great thing is it will put together IndexScans and SeqScans as
applicable. No need for multi-scans as a special node type.
--
=== The PostgreSQL Company: Command Prompt, Inc. ===
Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240
Providing the most comprehensive PostgreSQL solutions since 1997
http://www.commandprompt.com/
Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
PostgreSQL Replication: http://www.commandprompt.com/products/
---------------------------(end of broadcast)---------------------------
TIP 5: don't forget to increase your free space map settings
