77 lines
2.2 KiB
MySQL
77 lines
2.2 KiB
MySQL
|
/*
|
||
|
|
*This file is part of Adempiere ERP Bazaar
|
||
|
|
*http://www.adempiere.org
|
||
|
|
*
|
||
|
|
*Copyright (C) 2006 Gavin Dunse
|
||
|
|
*Copyright (C) 1999-2006 ComPiere, inc
|
||
|
|
*
|
||
|
|
*This program is free software; you can redistribute it and/or
|
||
|
|
*modify it under the terms of the GNU General Public License
|
||
|
|
*as published by the Free Software Foundation; either version 2
|
||
|
|
*of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
*This program is distributed in the hope that it will be useful,
|
||
|
|
*but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
*GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
*You should have received a copy of the GNU General Public License
|
||
|
|
*along with this program; if not, write to the Free Software
|
||
|
|
*Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.of
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** Get Character at Position */
|
||
|
|
SET search_path = adempiere, pg_catalog;
|
||
|
|
|
||
|
|
CREATE OR REPLACE FUNCTION firstOf (
|
||
|
|
IN TIMESTAMP WITH TIME ZONE, -- $1 date
|
||
|
|
IN VARCHAR -- $2 part of date
|
||
|
|
) RETURNS DATE AS
|
||
|
|
$$
|
||
|
|
DECLARE
|
||
|
|
datepart VARCHAR;
|
||
|
|
datetime TIMESTAMP WITH TIME ZONE;
|
||
|
|
offset INTEGER;
|
||
|
|
BEGIN
|
||
|
|
datepart = $2;
|
||
|
|
offset = 0;
|
||
|
|
IF $2 IN ('') THEN
|
||
|
|
datepart = 'millennium';
|
||
|
|
ELSEIF $2 IN ('') THEN
|
||
|
|
datepart = 'century';
|
||
|
|
ELSEIF $2 IN ('') THEN
|
||
|
|
datepart = 'decade';
|
||
|
|
ELSEIF $2 IN ('IYYY','IY','I') THEN
|
||
|
|
datepart = 'year';
|
||
|
|
ELSEIF $2 IN ('SYYYY','YYYY','YEAR','SYEAR','YYY','YY','Y') THEN
|
||
|
|
datepart = 'year';
|
||
|
|
ELSEIF $2 IN ('Q') THEN
|
||
|
|
datepart = 'quarter';
|
||
|
|
ELSEIF $2 IN ('MONTH','MON','MM','RM') THEN
|
||
|
|
datepart = 'month';
|
||
|
|
ELSEIF $2 IN ('IW') THEN
|
||
|
|
datepart = 'week';
|
||
|
|
ELSEIF $2 IN ('W') THEN
|
||
|
|
datepart = 'week';
|
||
|
|
ELSEIF $2 IN ('DDD','DD','J') THEN
|
||
|
|
datepart = 'day';
|
||
|
|
ELSEIF $2 IN ('DAY','DY','D') THEN
|
||
|
|
datepart = 'week';
|
||
|
|
-- move to sunday to make it compatible with oracle and SQLJ
|
||
|
|
offset = -1;
|
||
|
|
ELSEIF $2 IN ('HH','HH12','HH24') THEN
|
||
|
|
datepart = 'hour';
|
||
|
|
ELSEIF $2 IN ('MI') THEN
|
||
|
|
datepart = 'minute';
|
||
|
|
ELSEIF $2 IN ('') THEN
|
||
|
|
datepart = 'second';
|
||
|
|
ELSEIF $2 IN ('') THEN
|
||
|
|
datepart = 'milliseconds';
|
||
|
|
ELSEIF $2 IN ('') THEN
|
||
|
|
datepart = 'microseconds';
|
||
|
|
END IF;
|
||
|
|
datetime = date_trunc(datepart, $1);
|
||
|
|
RETURN cast(datetime as date) + offset;
|
||
|
|
END;
|
||
|
|
$$ LANGUAGE plpgsql;
|