On 8 Feb 2003, at 12:25, Bhavin Vyas wrote:
> So, it could either be ....^www.yahoo.com^(ct value) or
> .....^^.....(no ct value). I would like that when there is no
> ct value present in the line, the ct value in Log table should
> stay as the default NULL....but it is not. The value becomes ''
> i.e. a zero length string.
If you want to insert a NULL, you have to use the representation of
NULL that LOAD DATA expects, which is '\N' (a backslash followed by a
capital N). So either preprocess your text files to put the '\N' in
(or create them that way in the first place), or follow your import
immediately with a query like:
UPDATE Log SET ct = NULL WHERE ct = '';
Also, if you're not distinguishing between NULL and '' anyway, you
may want to avoid using NULL at all. It seems to be increasing the
complication for no benefit.
--
Keith C. Ivey <[EMAIL PROTECTED]>
Tobacco Documents Online
http://tobaccodocuments.org
Phone 202-667-6653
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