From 39f6d4cf50ab2b68f61c5c7a8046213cbe26153d Mon Sep 17 00:00:00 2001
From: teo_sarca <devnull@localhost>
Date: Fri, 2 Nov 2007 06:11:31 +0000
Subject: [PATCH] BF [ 1824260 ] TRUNC function not working like in Oracle

---
 db/ddlutils/postgresql/functions/trunc.sql    |  4 +--
 migration/330-trunk/028_BF_1824260.sql        |  4 +++
 .../330-trunk/postgresql/028_BF_1824260.sql   | 35 +++++++++++++++++++
 3 files changed, 41 insertions(+), 2 deletions(-)
 create mode 100644 migration/330-trunk/028_BF_1824260.sql
 create mode 100644 migration/330-trunk/postgresql/028_BF_1824260.sql

diff --git a/db/ddlutils/postgresql/functions/trunc.sql b/db/ddlutils/postgresql/functions/trunc.sql
index 27d5a3c117..d344d18bdb 100644
--- a/db/ddlutils/postgresql/functions/trunc.sql
+++ b/db/ddlutils/postgresql/functions/trunc.sql
@@ -31,9 +31,9 @@ RETURNS DATE AS $$
 BEGIN
 	IF format = 'Q' THEN
 		RETURN CAST(DATE_Trunc('quarter',datetime) as DATE);
-	ELSIF format = 'Y' THEN
+	ELSIF format = 'Y' or format = 'YEAR' THEN
 		RETURN CAST(DATE_Trunc('year',datetime) as DATE);
-	ELSIF format = 'MM' THEN
+	ELSIF format = 'MM' or format = 'MONTH' THEN
 		RETURN CAST(DATE_Trunc('month',datetime) as DATE);
 	ELSIF format = 'DD' THEN
 		RETURN CAST(DATE_Trunc('day',datetime) as DATE);
diff --git a/migration/330-trunk/028_BF_1824260.sql b/migration/330-trunk/028_BF_1824260.sql
new file mode 100644
index 0000000000..3140f756c6
--- /dev/null
+++ b/migration/330-trunk/028_BF_1824260.sql
@@ -0,0 +1,4 @@
+-- BF [ 1824260 ] TRUNC function not working like in Oracle
+-- http://sourceforge.net/tracker/?func=detail&atid=879332&aid=1824260&group_id=176962
+--
+-- Nothing to do for Oracle, this is just a sequence placeholder
diff --git a/migration/330-trunk/postgresql/028_BF_1824260.sql b/migration/330-trunk/postgresql/028_BF_1824260.sql
new file mode 100644
index 0000000000..033bd1a1d8
--- /dev/null
+++ b/migration/330-trunk/postgresql/028_BF_1824260.sql
@@ -0,0 +1,35 @@
+-- BF [ 1824260 ] TRUNC function not working like in Oracle
+-- http://sourceforge.net/tracker/?func=detail&atid=879332&aid=1824260&group_id=176962
+--
+CREATE OR REPLACE FUNCTION trunc(datetime TIMESTAMP WITH TIME ZONE)
+RETURNS DATE AS $$
+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' or format = 'YEAR' THEN
+		RETURN CAST(DATE_Trunc('year',datetime) as DATE);
+	ELSIF format = 'MM' or format = 'MONTH' 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;