Re: Concatenate fields

  I've tried it and it works well, thanks a lot Oliver.
  Amanda




Oliver Elphick wrote:

> Amanda Riera wrote:
>   >I would like concatenate some fields to have all information in just
>   >one field. I'm doing this below:
>   >
>   >CREATE TABLE bill_2col AS
>   >SELECT  bill.bill_id,
>   > (trim(text(bill.bill_number)) || ' | ' ||
>   >  trim(text(provider.company)) || ' | ' ||
>   >  trim(to_char(bill.issue_date,'MM/DD/YY')) || ' | ' ||
>   >  trim(to_char(bill.amount,'9999999.99')) || ' pts') AS billdesc
>   >FROM bill, provider
>   >WHERE   bill.provider_id = provider.provider_id
>   >ORDER BY bill.bill_id;
>   >
>   >When it finds some empty field, it makes all the new field empty, no
>   >matters
>   >if the other are empty or not.
>
> In this case, empty means NULL.  Any concatenation involving NULL returns
> NULL; this is according to the standard.
>
> Use COALESCE(field,'') to return an empty string if field is NULL, so
> that no NULLs go into the concatenation.
>
> --
> Oliver Elphick                                Oliver.Elphick@lfix.co.uk
> Isle of Wight                              http://www.lfix.co.uk/oliver
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