On Mon, Apr 30, 2012 at 3:33 PM, David Johnston <pol...@yahoo.com> wrote: >> -----Original Message----- >> From: pgsql-hackers-ow...@postgresql.org [mailto:pgsql-hackers- >> ow...@postgresql.org] On Behalf Of Robert Haas >> Sent: Monday, April 30, 2012 2:20 PM >> To: Peter Eisentraut >> Cc: pgsql-hackers >> Subject: Re: [HACKERS] precision and scale functions for numeric >> >> >> I think you could test for integer-ness by testing whether val % 0 = 0. >> > > Either I am missing something here or you are. Since Modulus is a division > function anything "% 0" results in a division-by-zero ERROR - division has > to occur before a remainder can be obtained. > > Maybe "val % 2 NOT IN (0,1)" ...
Oops. I meant (val % 1) = 0, not (val % 0) = 0. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
