Re: A select DISTINCT query?

Guys,

On Sun, 2008-01-27 at 17:38 +0100, Pavel Stehule wrote:
> On 27/01/2008, Phil Rhoades <phil(at)pricom(dot)com(dot)au> wrote:
> > Tino,
> >
> >
> > On Sun, 2008-01-27 at 15:16 +0100, Tino Wildenhain wrote:
> > > Phil Rhoades wrote:
> > > > People,
> > > >
> > > > I want to select from a table ONLY unique records ie if a column has
> > > > values:
> > > >
> > > > 1
> > > > 2
> > > > 3
> > > > 3
> > > > 4
> > > > 5
> > > >
> > > > I want ONLY these records returned:
> > > >
> > > > 1
> > > > 2
> > > > 4
> > > > 5
> > >
> > >
> > > SELECT count(*) as cnt,a,b,c FORM yourtable
> > > GROUP BY a,b,c
> > > HAVING cnt=1
> > >
> > > should do.
> >
> >
> > I get:
> >
> > SELECT count(*) as cnt, name FRoM tst GROUP BY name HAVING cnt = 1 ;
> > ERROR: column "cnt" does not exist
> > LINE 1: ...ount(*) as cnt, name FRoM tst GROUP BY name HAVING cnt = 1 ;
> > ^
> >
> select count(*) as cnt, name from tst group by name having count(*) = 1

Muchas gracias!

Phil.
--
Philip Rhoades

Pricom Pty Limited (ACN 003 252 275 ABN 91 003 252 275)
GPO Box 3411
Sydney NSW 2001
Australia
Fax: +61:(0)2-8221-9599
E-mail: phil(at)pricom(dot)com(dot)au