On Thu, Nov 04, 2010 at 08:42:21PM +0100, Pavel Stehule wrote: > 2010/11/4 Dean Gibson (DB Administrator) <postgre...@ultimeth.com>: > > I'm sure this has been asked before, but I couldn't find it: > > > > I have a "zzz CHAR (8)" field.?? It needs to be CHAR because trailing spaces > > need to be ignored for most operations.?? However, I need to concatenate it > > with another (literal) string and need the spaces to be significant in that > > operation.?? The ONLY WAY I could find to do it?? in v9.0.1 was (represented > > in the following function): > > > > CREATE OR REPLACE FUNCTION padded( field CHAR ) RETURNS TEXT > > ?????? RETURNS NULL ON NULL INPUT > > ?????? IMMUTABLE > > ?????? LANGUAGE SQL AS $SQL$ > > ?????????????? SELECT RPAD( $1, OCTET_LENGTH( $1 ) ) > > ?????? $SQL$; > > > > And then of course I write: > > > > SELECT padded( zzz ) || '/' || ... > > > > Is there a better way? > > > > > > nic=# SELECT 'AAAA '::char(6) || 'bbbb'; > ?column? > ---------- > AAAAbbbb > (1 row) > > Time: 2.710 ms > nic=# SELECT 'AAAA '::char(6)::cstring || 'bbbb'; > ?column? > ------------ > AAAA bbbb > (1 row) > > > regards > > Pavel Stehule >
Here is a link to some useful other pseudo types: http://www.postgresql.org/docs/9.0/interactive/datatype-pseudo.html Regards, Ken -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
