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* Implement trunc in pl/pgsql 

* Implement additional functions that is using the plsql version even when running on oracle sqlj
* Modified timestamp manipulation function to return date to align with the oracle convention
This commit is contained in:
Heng Sin Low 2007-01-26 09:54:54 +00:00
parent ea6f8fb215
commit b0e6e1552a
5 changed files with 160 additions and 36 deletions
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35
db/ddlutils/postgresql/functions/addDays.sql Normal file
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@ -0,0 +1,35 @@
/*
*This file is part of Adempiere ERP Bazaar
*http://www.adempiere.org
*
*Copyright (C) 2007 Low Heng Sin
*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
*/
CREATE OR REPLACE FUNCTION addDays(datetime TIMESTAMP WITH TIME ZONE, days Numeric)
RETURNS DATE AS $$
BEGIN
RETURN CAST(datetime AS DATE) + days;
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION subtractdays (day TIMESTAMP WITH TIME ZONE, days NUMERIC)
RETURNS TIMESTAMP WITH TIME ZONE AS $$
BEGIN
RETURN addDays(day,(days * -1));
END;
$$ LANGUAGE plpgsql;

28
db/ddlutils/postgresql/functions/daysBetween.sql Normal file
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/*
*This file is part of Adempiere ERP Bazaar
*http://www.adempiere.org
*
*Copyright (C) 2007 Low Heng Sin
*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
*/
CREATE OR REPLACE FUNCTION daysBetween(p_date1 TIMESTAMP WITH TIME ZONE, p_date2 TIMESTAMP WITH TIME ZONE)
RETURNS INTEGER AS $$
BEGIN
RETURN CAST(p_date1 AS DATE) - CAST(p_date2 as DATE);
END;
$$ LANGUAGE plpgsql;

74
db/ddlutils/postgresql/functions/firstOf.sql
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@ -26,45 +26,47 @@ 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 TIMESTAMP WITH TIME ZONE AS
) RETURNS DATE AS
$$
DECLARE
datepart VARCHAR;
datetime TIMESTAMP WITH TIME ZONE;
BEGIN
datepart = $2;
IF $2 IN ('') THEN
datepart = 'millennium';
ELSEIF $2 IN ('') THEN
datepart = 'century';
ELSEIF $2 IN ('') THEN
datepart = 'decade';
ELSEIF $2 IN ('IYYY','IY','I') THEN
datepart = 'year';
ELSEIF $2 IN ('SYYYY','YYYY','YEAR','SYEAR','YYY','YY','Y') THEN
datepart = 'year';
ELSEIF $2 IN ('Q') THEN
datepart = 'quarter';
ELSEIF $2 IN ('MONTH','MON','MM','RM') THEN
datepart = 'month';
ELSEIF $2 IN ('IW') THEN
datepart = 'week';
ELSEIF $2 IN ('W') THEN
datepart = 'week';
ELSEIF $2 IN ('DDD','DD','J') THEN
datepart = 'day';
ELSEIF $2 IN ('DAY','DY','D') THEN
datepart = 'day';
ELSEIF $2 IN ('HH','HH12','HH24') THEN
datepart = 'hour';
ELSEIF $2 IN ('MI') THEN
datepart = 'minute';
ELSEIF $2 IN ('') THEN
datepart = 'second';
ELSEIF $2 IN ('') THEN
datepart = 'milliseconds';
ELSEIF $2 IN ('') THEN
datepart = 'microseconds';
END IF;
RETURN date_trunc(datepart, CAST($1 AS DATE));
datepart = $2;
IF $2 IN ('') THEN
datepart = 'millennium';
ELSEIF $2 IN ('') THEN
datepart = 'century';
ELSEIF $2 IN ('') THEN
datepart = 'decade';
ELSEIF $2 IN ('IYYY','IY','I') THEN
datepart = 'year';
ELSEIF $2 IN ('SYYYY','YYYY','YEAR','SYEAR','YYY','YY','Y') THEN
datepart = 'year';
ELSEIF $2 IN ('Q') THEN
datepart = 'quarter';
ELSEIF $2 IN ('MONTH','MON','MM','RM') THEN
datepart = 'month';
ELSEIF $2 IN ('IW') THEN
datepart = 'week';
ELSEIF $2 IN ('W') THEN
datepart = 'week';
ELSEIF $2 IN ('DDD','DD','J') THEN
datepart = 'day';
ELSEIF $2 IN ('DAY','DY','D') THEN
datepart = 'day';
ELSEIF $2 IN ('HH','HH12','HH24') THEN
datepart = 'hour';
ELSEIF $2 IN ('MI') THEN
datepart = 'minute';
ELSEIF $2 IN ('') THEN
datepart = 'second';
ELSEIF $2 IN ('') THEN
datepart = 'milliseconds';
ELSEIF $2 IN ('') THEN
datepart = 'microseconds';
END IF;
datetime = date_trunc(datepart, $1);
RETURN cast(datetime as date);
END;
$$ LANGUAGE plpgsql;

6
db/ddlutils/postgresql/functions/getDate.sql Normal file
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CREATE OR REPLACE FUNCTION getDate()
RETURNS TIMESTAMP WITH TIME ZONE AS $$
BEGIN
RETURN now();
END;
$$ LANGUAGE plpgsql VOLATILE;

53
db/ddlutils/postgresql/functions/trunc.sql Normal file
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/*
*This file is part of Adempiere ERP Bazaar
*http://www.adempiere.org
*
*Copyright (C) 2007 Low Heng Sin
*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
*/
CREATE OR REPLACE FUNCTION trunc(datetime TIMESTAMP WITH TIME ZONE)
RETURNS DATE AS $$
BEGIN
RETURN CAST(datetime AS DATE);
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION trunc(datetime TIMESTAMP WITH TIME ZONE, format varchar)
RETURNS DATE AS $$
BEGIN
IF format = 'Q' THEN
RETURN CAST(DATE_Trunc('quarter',datetime) as DATE);
ELSIF format = 'Y' THEN
RETURN CAST(DATE_Trunc('year',datetime) as DATE);
ELSIF format = 'MM' THEN
RETURN CAST(DATE_Trunc('month',datetime) as DATE);
ELSIF format = 'DD' THEN
RETURN CAST(DATE_Trunc('day',datetime) as DATE);
ELSIF format = 'DY' THEN
RETURN CAST(DATE_Trunc('day',datetime) as DATE);
ELSE
RETURN CAST(datetime AS DATE);
END IF;
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION trunc(i INTERVAL)
RETURNS INTEGER AS $$
BEGIN
RETURN EXTRACT(DAY FROM i);
END;
$$ LANGUAGE plpgsql;