On Mon, May 23, 2005 at 07:41:19PM +0200, Yves Vindevogel wrote:
However, when I query my db using for instance order by pages,
documentname, it is very fast.
If I use order by pages desc, documentname, it is not fast at
all, like it is not using the index properly at all.
Make an
I tried that, but
create index ixTest on table1 (pages desc, documentname)
gives me a syntax error
On 23 May 2005, at 20:03, Steinar H. Gunderson wrote:
On Mon, May 23, 2005 at 07:41:19PM +0200, Yves Vindevogel wrote:
However, when I query my db using for instance order by pages,
You didn't say what version of PostgreSQL you're trying.
I recall old version doesn't used index for backward pagination.
Oleg
On Mon, 23 May 2005, Yves Vindevogel wrote:
I tried that, but
create index ixTest on table1 (pages desc, documentname)
gives me a syntax error
On 23 May 2005, at
As far as I know, to use a straight index Postgres requires either
ORDER BY pages, description -- or --
ORDER BY pages DESC, description DESC.
If you want the results by pages DESC, description ASC, then you have to
make an index on an expression or define your own operator or something
