Ya, I kinda knew about these approaches. The problem ahs to do with novice users who don't know about coalesce or
or;inga check ofr nulls. I was hoping there was some special regexp expression that would match to a null.
Thanks for the quick response, and have a great weekend !
-----Original Message-----
From: Richard Broersma [mailto:richard.broersma@gmail.com]
Sent: Friday, September 10, 2010 12:19 PM
To: Gauthier, Dave
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] regexp on null
On Fri, Sep 10, 2010 at 9:00 AM, Gauthier, Dave <dave.gauthier@intel.com> wrote:
> Is there a way to regexp match on a null value?
I would say no.
> Or is it necessary to OR in a .... "or x is null"?
you could use a
COALESCE( text_column, '') ~ E'MyRegEx';
Or perhaps:
( text_column ~ E'MyRegEx' ) IS UNKNOWN
might work.
--
Regards,
Richard Broersma Jr.
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