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

4 files changed, 18 insertions, 2 deletions

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