SQL query IFNULL
Ruslan Zasukhin
sunshine at public.kherson.ua
Wed Oct 29 15:35:03 CST 2003
on 10/29/03 15:29, Martin Kloss at martin.kloss at gmx.de wrote:
> At 14:03 29.10.2003, you wrote:
>> You can use functions only in BaseObject methods.
>> You need create BaseObject method and use it in SELECT.
>
> ok, I created a method "has_comment" with the calculation:
>
> IF(comment != '', 'j', 'n')
>
> But when selecting the records:
>
> SELECT id, has_comment FROM data
>
> all I get is "j", but some records don't have any data in the
> field, so I assume it's empty.
>
> IF(comment IS NULL, 'n', 'j')
>
> gives me the same result.
Try to check on small db with VAPP.
--
Best regards,
Ruslan Zasukhin [ I feel the need...the need for speed ]
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