Re: [GENERAL] case expression
Garry Saddington wrote: It does work but returns a column called case. How can I return the case column as 'postcode'? select CASE WHEN postcode ilike '%OO%' THEN '' END as postcode from addresses -- Guy Rouillier -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] case expression
> > BTW, should you have an "else" clause in there? - What happens when the > comparison fails? > As Tom said, a null value would be returned.
Re: [GENERAL] case expression
On 24/09/2008 23:22, Garry Saddington wrote: >> Garry Saddington <[EMAIL PROTECTED]> writes: >>> CASE WHEN postcode ilike '%OO%' THEN '' >>> END >>> from addresses > > It does work but returns a column called case. How can I return the case > column as 'postcode'? ...case when postcode ilike '%OO%' then '' end as postcode, ... BTW, should you have an "else" clause in there? - What happens when the comparison fails? Ray. -- Raymond O'Donnell, Director of Music, Galway Cathedral, Ireland [EMAIL PROTECTED] Galway Cathedral Recitals: http://www.galwaycathedral.org/recitals -- -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] case expression
On Wed, Sep 24, 2008 at 3:22 PM, Garry Saddington <[EMAIL PROTECTED]> wrote: >> > select *, >> > CASE WHEN postcode ilike '%OO%' THEN '' >> > END >> > from addresses > It does work but returns a column called case. How can I return the case > column as 'postcode'? You have to give an Alias to this column name CASE WHEN postcode ilike '%OO%' THEN '' END AS postcode -- Regards, Richard Broersma Jr. Visit the Los Angeles PostgreSQL Users Group (LAPUG) http://pugs.postgresql.org/lapug -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] case expression
On Wednesday 24 September 2008 21:03, Tom Lane wrote: > Garry Saddington <[EMAIL PROTECTED]> writes: > > Can anyone tell me why this will not work? > > > > select *, > > CASE WHEN postcode ilike '%OO%' THEN '' > > END > > from addresses > > ... > > Define "not work". What are you expecting it to do versus what > really happens? > > Right offhand it looks like the CASE will return either an empty > string or a NULL, which doesn't seem particularly useful ... > > regards, tom lane It does work but returns a column called case. How can I return the case column as 'postcode'? Regards garry -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] case expression
Garry Saddington <[EMAIL PROTECTED]> writes: > Can anyone tell me why this will not work? > select *, > CASE WHEN postcode ilike '%OO%' THEN '' > END > from addresses > ... Define "not work". What are you expecting it to do versus what really happens? Right offhand it looks like the CASE will return either an empty string or a NULL, which doesn't seem particularly useful ... regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
[GENERAL] case expression
Can anyone tell me why this will not work? select *, CASE WHEN postcode ilike '%OO%' THEN '' END from addresses where studentid=1234 and addresstype='C' There are postcodes like this: OO00 0OO Regards Garry -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
