Question on indexes

CREATE INDEX code_idx ON films(code) TABLESPACE indexspace;

http://www.postgresql.org/docs/8.1/interactive/sql-createindex.html

vish

Emil Rachovsky wrote:

Hi,
Can anyone show me a simple way of creating an index
in PostGre like that:
create index indName on someTable(someIntColumn DESC)
?

Not using that particular syntax, but you can do that if you create the
appropiate operator classes. Note that if you want to use btree index
on a single column, you don't need to have a descending index, because
btree indexes can be scanned in either direction. The opclass trick is
only needed if you want to have a multicolumn index. (I guess in the
other access methods it doesn't make much sense to think of descending
indexes.)

--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.