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-- ==============================================================
-- GNUmed database schema change script
--
-- License: GPL v2 or later
-- Author: karsten.hilbert@gmx.net
--
-- ==============================================================
-- $Id: v12-gm-nullify_empty_string.sql,v 1.2 2009-11-29 16:06:51 ncq Exp $
-- $Revision: 1.2 $
-- --------------------------------------------------------------
\set ON_ERROR_STOP 1
set check_function_bodies to 1;
--set default_transaction_read_only to off;
-- --------------------------------------------------------------
create or replace function gm.nullify_empty_string(text)
returns text
language 'plpgsql'
as '
DECLARE
_input alias for $1;
BEGIN
if _input is null then
return null;
end if;
if trim(_input) = '''' then
return null;
end if;
return _input;
END;';
grant execute on function gm.nullify_empty_string(text) to group "gm-public";
-- --------------------------------------------------------------
select gm.log_script_insertion('$RCSfile: v12-gm-nullify_empty_string.sql,v $', '$Revision: 1.2 $');
-- ==============================================================
-- $Log: v12-gm-nullify_empty_string.sql,v $
-- Revision 1.2 2009-11-29 16:06:51 ncq
-- - turn into psql func, and fix wrongly returning trim()ed result in passing
--
-- Revision 1.1 2009/08/28 12:48:12 ncq
-- - add gm.nullify_empty_string()
--
--
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