From 1973971821672447d30bda6f12736a7e5987569f Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Fri, 5 Mar 2004 02:41:14 +0000
Subject: [PATCH] Per a brief conversation with Tom, I've created a patch for
adding support for 'week' within the date_trunc function.
Within the patch I added a couple of test cases and associated target
output, and changed the documentation to add 'week' appropriately.
Robert Creager
---
doc/src/sgml/func.sgml | 3 ++-
src/backend/utils/adt/timestamp.c | 16 +++++++++++++++-
src/test/regress/expected/timestamp.out | 6 ++++++
src/test/regress/expected/timestamptz.out | 10 ++++++++--
src/test/regress/sql/timestamp.sql | 2 ++
src/test/regress/sql/timestamptz.sql | 2 ++
6 files changed, 35 insertions(+), 4 deletions(-)
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 66dae9bbdde..6c3856d26f7 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,5 +1,5 @@
<!--
-$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.190 2004/03/04 20:09:29 dennis Exp $
+$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.191 2004/03/05 02:41:14 momjian Exp $
PostgreSQL documentation
-->
@@ -5309,6 +5309,7 @@ date_trunc('<replaceable>field</replaceable>', <replaceable>source</replaceable>
<member><literal>minute</literal></member>
<member><literal>hour</literal></member>
<member><literal>day</literal></member>
+ <member><literal>week</literal></member>
<member><literal>month</literal></member>
<member><literal>year</literal></member>
<member><literal>decade</literal></member>
diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
index ad79025ebc0..4fb5f743b03 100644
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.99 2004/02/14 20:16:17 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/timestamp.c,v 1.100 2004/03/05 02:41:14 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -2564,6 +2564,13 @@ timestamp_trunc(PG_FUNCTION_ARGS)
switch (val)
{
+ case DTK_WEEK:
+ isoweek2date( date2isoweek( tm->tm_year, tm->tm_mon, tm->tm_mday ), &(tm->tm_year), &(tm->tm_mon), &(tm->tm_mday) );
+ tm->tm_hour = 0;
+ tm->tm_min = 0;
+ tm->tm_sec = 0;
+ fsec = 0;
+ break;
case DTK_MILLENNIUM:
tm->tm_year = (tm->tm_year / 1000) * 1000;
case DTK_CENTURY:
@@ -2672,6 +2679,13 @@ timestamptz_trunc(PG_FUNCTION_ARGS)
switch (val)
{
+ case DTK_WEEK:
+ isoweek2date( date2isoweek( tm->tm_year, tm->tm_mon, tm->tm_mday ), &(tm->tm_year), &(tm->tm_mon), &(tm->tm_mday) );
+ tm->tm_hour = 0;
+ tm->tm_min = 0;
+ tm->tm_sec = 0;
+ fsec = 0;
+ break;
case DTK_MILLENNIUM:
tm->tm_year = (tm->tm_year / 1000) * 1000;
case DTK_CENTURY:
diff --git a/src/test/regress/expected/timestamp.out b/src/test/regress/expected/timestamp.out
index f037d576ec8..7557bf2900e 100644
--- a/src/test/regress/expected/timestamp.out
+++ b/src/test/regress/expected/timestamp.out
@@ -499,6 +499,12 @@ SELECT '' AS "54", d1 - timestamp without time zone '1997-01-02' AS diff
| @ 1460 days 17 hours 32 mins 1 sec
(54 rows)
+SELECT '' AS date_trunc_week, date_trunc( 'week', timestamp '2004-02-29 15:44:17.71393' ) AS week_trunc;
+ date_trunc_week | week_trunc
+-----------------+--------------------------
+ | Mon Feb 23 00:00:00 2004
+(1 row)
+
-- Test casting within a BETWEEN qualifier
SELECT '' AS "54", d1 - timestamp without time zone '1997-01-02' AS diff
FROM TIMESTAMP_TBL
diff --git a/src/test/regress/expected/timestamptz.out b/src/test/regress/expected/timestamptz.out
index a76e09a0f54..8a9bccf0a34 100644
--- a/src/test/regress/expected/timestamptz.out
+++ b/src/test/regress/expected/timestamptz.out
@@ -494,6 +494,12 @@ SELECT '' AS "54", d1 - timestamp with time zone '1997-01-02' AS diff
| @ 1460 days 17 hours 32 mins 1 sec
(54 rows)
+SELECT '' AS date_trunc_week, date_trunc( 'week', timestamp with time zone '2004-02-29 15:44:17.71393' ) AS week_trunc;
+ date_trunc_week | week_trunc
+-----------------+------------------------------
+ | Mon Feb 23 00:00:00 2004 PST
+(1 row)
+
-- Test casting within a BETWEEN qualifier
SELECT '' AS "54", d1 - timestamp with time zone '1997-01-02' AS diff
FROM TIMESTAMPTZ_TBL
@@ -1317,9 +1323,9 @@ SELECT '' AS to_char_9, to_char(d1, 'YYYY A.D. YYYY a.d. YYYY bc HH:MI:SS P.M. H
| 2001 A.D. 2001 a.d. 2001 ad 05:32:01 P.M. 05:32:01 p.m. 05:32:01 pm
(64 rows)
-SELECT '' AS to_char_10, to_char(d1, 'YYYY WW IYYY IYY IY I IW')
+SELECT '' AS to_char_10, to_char(d1, 'YYYY WW IYYY IYY IY I IW')
FROM TIMESTAMPTZ_TBL;
- to_char_10 | to_char
+ to_char_10 | to_char
------------+--------------------------
|
|
diff --git a/src/test/regress/sql/timestamp.sql b/src/test/regress/sql/timestamp.sql
index 48a9151a703..ceda76f546a 100644
--- a/src/test/regress/sql/timestamp.sql
+++ b/src/test/regress/sql/timestamp.sql
@@ -151,6 +151,8 @@ SELECT '' AS "49", d1 FROM TIMESTAMP_TBL
SELECT '' AS "54", d1 - timestamp without time zone '1997-01-02' AS diff
FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';
+SELECT '' AS date_trunc_week, date_trunc( 'week', timestamp '2004-02-29 15:44:17.71393' ) AS week_trunc;
+
-- Test casting within a BETWEEN qualifier
SELECT '' AS "54", d1 - timestamp without time zone '1997-01-02' AS diff
FROM TIMESTAMP_TBL
diff --git a/src/test/regress/sql/timestamptz.sql b/src/test/regress/sql/timestamptz.sql
index 2a789b87bd2..12572fa7ce4 100644
--- a/src/test/regress/sql/timestamptz.sql
+++ b/src/test/regress/sql/timestamptz.sql
@@ -145,6 +145,8 @@ SELECT '' AS "49", d1 FROM TIMESTAMPTZ_TBL
SELECT '' AS "54", d1 - timestamp with time zone '1997-01-02' AS diff
FROM TIMESTAMPTZ_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';
+SELECT '' AS date_trunc_week, date_trunc( 'week', timestamp with time zone '2004-02-29 15:44:17.71393' ) AS week_trunc;
+
-- Test casting within a BETWEEN qualifier
SELECT '' AS "54", d1 - timestamp with time zone '1997-01-02' AS diff
FROM TIMESTAMPTZ_TBL
--
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