Ya, I kinda knew about these approaches. The problem ahs to do with novice users who don't know about coalesce or or;ing a 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@xxxxxxxxx] Sent: Friday, September 10, 2010 12:19 PM To: Gauthier, Dave Cc: pgsql-general@xxxxxxxxxxxxxx Subject: Re: regexp on null On Fri, Sep 10, 2010 at 9:00 AM, Gauthier, Dave <dave.gauthier@xxxxxxxxx> 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. Visit the Los Angeles PostgreSQL Users Group (LAPUG) http://pugs.postgresql.org/lapug -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
