Re: bad performances using hashjoin

On Sun, 20 Feb 2005 13:46:10 -0500, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> sat_request rows. If this is the case you actually need to optimize,
> probably the thing to do is to get rid of the ORDER BY clauses you
> evidently have in your views, so that there's some chance of building
> a fast-start plan.

Is having an order by in a view legal? In sybase ASA, mssql it throws a
syntax error if there's an order by.

If so, does it do 2 sorts when you sort by something else?

i.e. if view is
create view v1 as select * from table order by 1;
and the statment
select * from v1 order by 2;
is run does it sort by 1 then resort by 2?

klint.

+---------------------------------------+-----------------+
: Klint Gore : "Non rhyming :
: EMail : kg(at)kgb(dot)une(dot)edu(dot)au : slang - the :
: Snail : A.B.R.I. : possibilities :
: Mail University of New England : are useless" :
: Armidale NSW 2351 Australia : L.J.J. :
: Fax : +61 2 6772 5376 : :
+---------------------------------------+-----------------+