Re: PIVOT of data

Probably worth noting that this could be normalized into at least 3 tables
from what I can tell.

Tim

On Wed, Mar 14, 2001 at 11:03:01PM +0000, Oliver Elphick wrote:
> Srikanth Rao wrote:
> >Hi,
> >I have a table like this:
> > location | numbrochures | marketing
> >-----------------------+--------------+-----------
> > 101 Asheville, NC | 4 | NEWS
> > 101 Asheville, NC | 1 | TV
> > 101 Asheville, NC | 3 | RADIO
> > 101 Asheville, NC | 2 | OTHER
> > 101 Asheville, NC | 3 | null
> > 101 Asheville, NC | 1 | TV
> > 102 'Charlotte', 'NC' | 1 | SIGN
> > 104 'Colfax', 'NC' | 5 | SIGN
> > 109 'Moyock', 'NC' | 1 | BROCHURE
> >(9 rows)
> >
> >
> >I want the headings to be like:
> >
> >location | NEWS | TV | RADIO | OTHER | ........
> >
> >How to get this done using sql for postgresql backend?
>
> SELECT location,
> CASE WHEN marketing = 'NEWS'
> THEN numbrochures
> ELSE NULL
> END AS "NEWS",
> CASE WHEN marketing = 'TV'
> THEN numbrochures
> ELSE NULL
> END AS "TV",
> ...
>
> but it's a clumsy hack and won't work if you don't know the
> contents of "marketing" in advance.
>
> --
> Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
> Isle of Wight http://www.lfix.co.uk/oliver
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>
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