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postgresql/src/test/regress/expected/date.out
Alvaro Herrera 30bcebbdcf Allow negative years in make_date to represent BC years 
There doesn't seem to be any reason not to allow negative years to be
interpreted as BC, so do that.

The documentation is pretty vague on the details of this function, so
nothing needs to change there.

Reported-by: Andy Abelisto, in bug #14446
2017-01-19 09:45:38 -03:00

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--
-- DATE
--
CREATE TABLE DATE_TBL (f1 date);
INSERT INTO DATE_TBL VALUES ('1957-04-09');
INSERT INTO DATE_TBL VALUES ('1957-06-13');
INSERT INTO DATE_TBL VALUES ('1996-02-28');
INSERT INTO DATE_TBL VALUES ('1996-02-29');
INSERT INTO DATE_TBL VALUES ('1996-03-01');
INSERT INTO DATE_TBL VALUES ('1996-03-02');
INSERT INTO DATE_TBL VALUES ('1997-02-28');
INSERT INTO DATE_TBL VALUES ('1997-02-29');
ERROR: date/time field value out of range: "1997-02-29"
LINE 1: INSERT INTO DATE_TBL VALUES ('1997-02-29');
^
INSERT INTO DATE_TBL VALUES ('1997-03-01');
INSERT INTO DATE_TBL VALUES ('1997-03-02');
INSERT INTO DATE_TBL VALUES ('2000-04-01');
INSERT INTO DATE_TBL VALUES ('2000-04-02');
INSERT INTO DATE_TBL VALUES ('2000-04-03');
INSERT INTO DATE_TBL VALUES ('2038-04-08');
INSERT INTO DATE_TBL VALUES ('2039-04-09');
INSERT INTO DATE_TBL VALUES ('2040-04-10');
SELECT f1 AS "Fifteen" FROM DATE_TBL;
Fifteen
------------
04-09-1957
06-13-1957
02-28-1996
02-29-1996
03-01-1996
03-02-1996
02-28-1997
03-01-1997
03-02-1997
04-01-2000
04-02-2000
04-03-2000
04-08-2038
04-09-2039
04-10-2040
(15 rows)
SELECT f1 AS "Nine" FROM DATE_TBL WHERE f1 < '2000-01-01';
Nine
------------
04-09-1957
06-13-1957
02-28-1996
02-29-1996
03-01-1996
03-02-1996
02-28-1997
03-01-1997
03-02-1997
(9 rows)
SELECT f1 AS "Three" FROM DATE_TBL
WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01';
Three
------------
04-01-2000
04-02-2000
04-03-2000
(3 rows)
--
-- Check all the documented input formats
--
SET datestyle TO iso; -- display results in ISO
SET datestyle TO ymd;
SELECT date 'January 8, 1999';
date
------------
1999-01-08
(1 row)
SELECT date '1999-01-08';
date
------------
1999-01-08
(1 row)
SELECT date '1999-01-18';
date
------------
1999-01-18
(1 row)
SELECT date '1/8/1999';
ERROR: date/time field value out of range: "1/8/1999"
LINE 1: SELECT date '1/8/1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1/18/1999';
ERROR: date/time field value out of range: "1/18/1999"
LINE 1: SELECT date '1/18/1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '18/1/1999';
ERROR: date/time field value out of range: "18/1/1999"
LINE 1: SELECT date '18/1/1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '01/02/03';
date
------------
2001-02-03
(1 row)
SELECT date '19990108';
date
------------
1999-01-08
(1 row)
SELECT date '990108';
date
------------
1999-01-08
(1 row)
SELECT date '1999.008';
date
------------
1999-01-08
(1 row)
SELECT date 'J2451187';
date
------------
1999-01-08
(1 row)
SELECT date 'January 8, 99 BC';
ERROR: date/time field value out of range: "January 8, 99 BC"
LINE 1: SELECT date 'January 8, 99 BC';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '99-Jan-08';
date
------------
1999-01-08
(1 row)
SELECT date '1999-Jan-08';
date
------------
1999-01-08
(1 row)
SELECT date '08-Jan-99';
ERROR: date/time field value out of range: "08-Jan-99"
LINE 1: SELECT date '08-Jan-99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '08-Jan-1999';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan-08-99';
ERROR: date/time field value out of range: "Jan-08-99"
LINE 1: SELECT date 'Jan-08-99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date 'Jan-08-1999';
date
------------
1999-01-08
(1 row)
SELECT date '99-08-Jan';
ERROR: invalid input syntax for type date: "99-08-Jan"
LINE 1: SELECT date '99-08-Jan';
^
SELECT date '1999-08-Jan';
ERROR: invalid input syntax for type date: "1999-08-Jan"
LINE 1: SELECT date '1999-08-Jan';
^
SELECT date '99 Jan 08';
date
------------
1999-01-08
(1 row)
SELECT date '1999 Jan 08';
date
------------
1999-01-08
(1 row)
SELECT date '08 Jan 99';
ERROR: date/time field value out of range: "08 Jan 99"
LINE 1: SELECT date '08 Jan 99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '08 Jan 1999';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan 08 99';
ERROR: date/time field value out of range: "Jan 08 99"
LINE 1: SELECT date 'Jan 08 99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date 'Jan 08 1999';
date
------------
1999-01-08
(1 row)
SELECT date '99 08 Jan';
date
------------
1999-01-08
(1 row)
SELECT date '1999 08 Jan';
date
------------
1999-01-08
(1 row)
SELECT date '99-01-08';
date
------------
1999-01-08
(1 row)
SELECT date '1999-01-08';
date
------------
1999-01-08
(1 row)
SELECT date '08-01-99';
ERROR: date/time field value out of range: "08-01-99"
LINE 1: SELECT date '08-01-99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '08-01-1999';
ERROR: date/time field value out of range: "08-01-1999"
LINE 1: SELECT date '08-01-1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '01-08-99';
ERROR: date/time field value out of range: "01-08-99"
LINE 1: SELECT date '01-08-99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '01-08-1999';
ERROR: date/time field value out of range: "01-08-1999"
LINE 1: SELECT date '01-08-1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '99-08-01';
date
------------
1999-08-01
(1 row)
SELECT date '1999-08-01';
date
------------
1999-08-01
(1 row)
SELECT date '99 01 08';
date
------------
1999-01-08
(1 row)
SELECT date '1999 01 08';
date
------------
1999-01-08
(1 row)
SELECT date '08 01 99';
ERROR: date/time field value out of range: "08 01 99"
LINE 1: SELECT date '08 01 99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '08 01 1999';
ERROR: date/time field value out of range: "08 01 1999"
LINE 1: SELECT date '08 01 1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '01 08 99';
ERROR: date/time field value out of range: "01 08 99"
LINE 1: SELECT date '01 08 99';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '01 08 1999';
ERROR: date/time field value out of range: "01 08 1999"
LINE 1: SELECT date '01 08 1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '99 08 01';
date
------------
1999-08-01
(1 row)
SELECT date '1999 08 01';
date
------------
1999-08-01
(1 row)
SET datestyle TO dmy;
SELECT date 'January 8, 1999';
date
------------
1999-01-08
(1 row)
SELECT date '1999-01-08';
date
------------
1999-01-08
(1 row)
SELECT date '1999-01-18';
date
------------
1999-01-18
(1 row)
SELECT date '1/8/1999';
date
------------
1999-08-01
(1 row)
SELECT date '1/18/1999';
ERROR: date/time field value out of range: "1/18/1999"
LINE 1: SELECT date '1/18/1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '18/1/1999';
date
------------
1999-01-18
(1 row)
SELECT date '01/02/03';
date
------------
2003-02-01
(1 row)
SELECT date '19990108';
date
------------
1999-01-08
(1 row)
SELECT date '990108';
date
------------
1999-01-08
(1 row)
SELECT date '1999.008';
date
------------
1999-01-08
(1 row)
SELECT date 'J2451187';
date
------------
1999-01-08
(1 row)
SELECT date 'January 8, 99 BC';
date
---------------
0099-01-08 BC
(1 row)
SELECT date '99-Jan-08';
ERROR: date/time field value out of range: "99-Jan-08"
LINE 1: SELECT date '99-Jan-08';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999-Jan-08';
date
------------
1999-01-08
(1 row)
SELECT date '08-Jan-99';
date
------------
1999-01-08
(1 row)
SELECT date '08-Jan-1999';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan-08-99';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan-08-1999';
date
------------
1999-01-08
(1 row)
SELECT date '99-08-Jan';
ERROR: invalid input syntax for type date: "99-08-Jan"
LINE 1: SELECT date '99-08-Jan';
^
SELECT date '1999-08-Jan';
ERROR: invalid input syntax for type date: "1999-08-Jan"
LINE 1: SELECT date '1999-08-Jan';
^
SELECT date '99 Jan 08';
ERROR: date/time field value out of range: "99 Jan 08"
LINE 1: SELECT date '99 Jan 08';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999 Jan 08';
date
------------
1999-01-08
(1 row)
SELECT date '08 Jan 99';
date
------------
1999-01-08
(1 row)
SELECT date '08 Jan 1999';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan 08 99';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan 08 1999';
date
------------
1999-01-08
(1 row)
SELECT date '99 08 Jan';
ERROR: invalid input syntax for type date: "99 08 Jan"
LINE 1: SELECT date '99 08 Jan';
^
SELECT date '1999 08 Jan';
date
------------
1999-01-08
(1 row)
SELECT date '99-01-08';
ERROR: date/time field value out of range: "99-01-08"
LINE 1: SELECT date '99-01-08';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999-01-08';
date
------------
1999-01-08
(1 row)
SELECT date '08-01-99';
date
------------
1999-01-08
(1 row)
SELECT date '08-01-1999';
date
------------
1999-01-08
(1 row)
SELECT date '01-08-99';
date
------------
1999-08-01
(1 row)
SELECT date '01-08-1999';
date
------------
1999-08-01
(1 row)
SELECT date '99-08-01';
ERROR: date/time field value out of range: "99-08-01"
LINE 1: SELECT date '99-08-01';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999-08-01';
date
------------
1999-08-01
(1 row)
SELECT date '99 01 08';
ERROR: date/time field value out of range: "99 01 08"
LINE 1: SELECT date '99 01 08';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999 01 08';
date
------------
1999-01-08
(1 row)
SELECT date '08 01 99';
date
------------
1999-01-08
(1 row)
SELECT date '08 01 1999';
date
------------
1999-01-08
(1 row)
SELECT date '01 08 99';
date
------------
1999-08-01
(1 row)
SELECT date '01 08 1999';
date
------------
1999-08-01
(1 row)
SELECT date '99 08 01';
ERROR: date/time field value out of range: "99 08 01"
LINE 1: SELECT date '99 08 01';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999 08 01';
date
------------
1999-08-01
(1 row)
SET datestyle TO mdy;
SELECT date 'January 8, 1999';
date
------------
1999-01-08
(1 row)
SELECT date '1999-01-08';
date
------------
1999-01-08
(1 row)
SELECT date '1999-01-18';
date
------------
1999-01-18
(1 row)
SELECT date '1/8/1999';
date
------------
1999-01-08
(1 row)
SELECT date '1/18/1999';
date
------------
1999-01-18
(1 row)
SELECT date '18/1/1999';
ERROR: date/time field value out of range: "18/1/1999"
LINE 1: SELECT date '18/1/1999';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '01/02/03';
date
------------
2003-01-02
(1 row)
SELECT date '19990108';
date
------------
1999-01-08
(1 row)
SELECT date '990108';
date
------------
1999-01-08
(1 row)
SELECT date '1999.008';
date
------------
1999-01-08
(1 row)
SELECT date 'J2451187';
date
------------
1999-01-08
(1 row)
SELECT date 'January 8, 99 BC';
date
---------------
0099-01-08 BC
(1 row)
SELECT date '99-Jan-08';
ERROR: date/time field value out of range: "99-Jan-08"
LINE 1: SELECT date '99-Jan-08';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999-Jan-08';
date
------------
1999-01-08
(1 row)
SELECT date '08-Jan-99';
date
------------
1999-01-08
(1 row)
SELECT date '08-Jan-1999';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan-08-99';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan-08-1999';
date
------------
1999-01-08
(1 row)
SELECT date '99-08-Jan';
ERROR: invalid input syntax for type date: "99-08-Jan"
LINE 1: SELECT date '99-08-Jan';
^
SELECT date '1999-08-Jan';
ERROR: invalid input syntax for type date: "1999-08-Jan"
LINE 1: SELECT date '1999-08-Jan';
^
SELECT date '99 Jan 08';
ERROR: invalid input syntax for type date: "99 Jan 08"
LINE 1: SELECT date '99 Jan 08';
^
SELECT date '1999 Jan 08';
date
------------
1999-01-08
(1 row)
SELECT date '08 Jan 99';
date
------------
1999-01-08
(1 row)
SELECT date '08 Jan 1999';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan 08 99';
date
------------
1999-01-08
(1 row)
SELECT date 'Jan 08 1999';
date
------------
1999-01-08
(1 row)
SELECT date '99 08 Jan';
ERROR: invalid input syntax for type date: "99 08 Jan"
LINE 1: SELECT date '99 08 Jan';
^
SELECT date '1999 08 Jan';
date
------------
1999-01-08
(1 row)
SELECT date '99-01-08';
ERROR: date/time field value out of range: "99-01-08"
LINE 1: SELECT date '99-01-08';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999-01-08';
date
------------
1999-01-08
(1 row)
SELECT date '08-01-99';
date
------------
1999-08-01
(1 row)
SELECT date '08-01-1999';
date
------------
1999-08-01
(1 row)
SELECT date '01-08-99';
date
------------
1999-01-08
(1 row)
SELECT date '01-08-1999';
date
------------
1999-01-08
(1 row)
SELECT date '99-08-01';
ERROR: date/time field value out of range: "99-08-01"
LINE 1: SELECT date '99-08-01';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999-08-01';
date
------------
1999-08-01
(1 row)
SELECT date '99 01 08';
ERROR: date/time field value out of range: "99 01 08"
LINE 1: SELECT date '99 01 08';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999 01 08';
date
------------
1999-01-08
(1 row)
SELECT date '08 01 99';
date
------------
1999-08-01
(1 row)
SELECT date '08 01 1999';
date
------------
1999-08-01
(1 row)
SELECT date '01 08 99';
date
------------
1999-01-08
(1 row)
SELECT date '01 08 1999';
date
------------
1999-01-08
(1 row)
SELECT date '99 08 01';
ERROR: date/time field value out of range: "99 08 01"
LINE 1: SELECT date '99 08 01';
^
HINT: Perhaps you need a different "datestyle" setting.
SELECT date '1999 08 01';
date
------------
1999-08-01
(1 row)
-- Check upper and lower limits of date range
SELECT date '4714-11-24 BC';
date
---------------
4714-11-24 BC
(1 row)
SELECT date '4714-11-23 BC'; -- out of range
ERROR: date out of range: "4714-11-23 BC"
LINE 1: SELECT date '4714-11-23 BC';
^
SELECT date '5874897-12-31';
date
---------------
5874897-12-31
(1 row)
SELECT date '5874898-01-01'; -- out of range
ERROR: date out of range: "5874898-01-01"
LINE 1: SELECT date '5874898-01-01';
^
RESET datestyle;
--
-- Simple math
-- Leave most of it for the horology tests
--
SELECT f1 - date '2000-01-01' AS "Days From 2K" FROM DATE_TBL;
Days From 2K
--------------
-15607
-15542
-1403
-1402
-1401
-1400
-1037
-1036
-1035
91
92
93
13977
14343
14710
(15 rows)
SELECT f1 - date 'epoch' AS "Days From Epoch" FROM DATE_TBL;
Days From Epoch
-----------------
-4650
-4585
9554
9555
9556
9557
9920
9921
9922
11048
11049
11050
24934
25300
25667
(15 rows)
SELECT date 'yesterday' - date 'today' AS "One day";
One day
---------
-1
(1 row)
SELECT date 'today' - date 'tomorrow' AS "One day";
One day
---------
-1
(1 row)
SELECT date 'yesterday' - date 'tomorrow' AS "Two days";
Two days
----------
-2
(1 row)
SELECT date 'tomorrow' - date 'today' AS "One day";
One day
---------
1
(1 row)
SELECT date 'today' - date 'yesterday' AS "One day";
One day
---------
1
(1 row)
SELECT date 'tomorrow' - date 'yesterday' AS "Two days";
Two days
----------
2
(1 row)
--
-- test extract!
--
-- epoch
--
SELECT EXTRACT(EPOCH FROM DATE '1970-01-01'); -- 0
date_part
-----------
0
(1 row)
SELECT EXTRACT(EPOCH FROM TIMESTAMP '1970-01-01'); -- 0
date_part
-----------
0
(1 row)
SELECT EXTRACT(EPOCH FROM TIMESTAMPTZ '1970-01-01+00'); -- 0
date_part
-----------
0
(1 row)
--
-- century
--
SELECT EXTRACT(CENTURY FROM DATE '0101-12-31 BC'); -- -2
date_part
-----------
-2
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '0100-12-31 BC'); -- -1
date_part
-----------
-1
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '0001-12-31 BC'); -- -1
date_part
-----------
-1
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '0001-01-01'); -- 1
date_part
-----------
1
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '0001-01-01 AD'); -- 1
date_part
-----------
1
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '1900-12-31'); -- 19
date_part
-----------
19
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '1901-01-01'); -- 20
date_part
-----------
20
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '2000-12-31'); -- 20
date_part
-----------
20
(1 row)
SELECT EXTRACT(CENTURY FROM DATE '2001-01-01'); -- 21
date_part
-----------
21
(1 row)
SELECT EXTRACT(CENTURY FROM CURRENT_DATE)>=21 AS True; -- true
true
------
t
(1 row)
--
-- millennium
--
SELECT EXTRACT(MILLENNIUM FROM DATE '0001-12-31 BC'); -- -1
date_part
-----------
-1
(1 row)
SELECT EXTRACT(MILLENNIUM FROM DATE '0001-01-01 AD'); -- 1
date_part
-----------
1
(1 row)
SELECT EXTRACT(MILLENNIUM FROM DATE '1000-12-31'); -- 1
date_part
-----------
1
(1 row)
SELECT EXTRACT(MILLENNIUM FROM DATE '1001-01-01'); -- 2
date_part
-----------
2
(1 row)
SELECT EXTRACT(MILLENNIUM FROM DATE '2000-12-31'); -- 2
date_part
-----------
2
(1 row)
SELECT EXTRACT(MILLENNIUM FROM DATE '2001-01-01'); -- 3
date_part
-----------
3
(1 row)
-- next test to be fixed on the turn of the next millennium;-)
SELECT EXTRACT(MILLENNIUM FROM CURRENT_DATE); -- 3
date_part
-----------
3
(1 row)
--
-- decade
--
SELECT EXTRACT(DECADE FROM DATE '1994-12-25'); -- 199
date_part
-----------
199
(1 row)
SELECT EXTRACT(DECADE FROM DATE '0010-01-01'); -- 1
date_part
-----------
1
(1 row)
SELECT EXTRACT(DECADE FROM DATE '0009-12-31'); -- 0
date_part
-----------
0
(1 row)
SELECT EXTRACT(DECADE FROM DATE '0001-01-01 BC'); -- 0
date_part
-----------
0
(1 row)
SELECT EXTRACT(DECADE FROM DATE '0002-12-31 BC'); -- -1
date_part
-----------
-1
(1 row)
SELECT EXTRACT(DECADE FROM DATE '0011-01-01 BC'); -- -1
date_part
-----------
-1
(1 row)
SELECT EXTRACT(DECADE FROM DATE '0012-12-31 BC'); -- -2
date_part
-----------
-2
(1 row)
--
-- some other types:
--
-- on a timestamp.
SELECT EXTRACT(CENTURY FROM NOW())>=21 AS True; -- true
true
------
t
(1 row)
SELECT EXTRACT(CENTURY FROM TIMESTAMP '1970-03-20 04:30:00.00000'); -- 20
date_part
-----------
20
(1 row)
-- on an interval
SELECT EXTRACT(CENTURY FROM INTERVAL '100 y'); -- 1
date_part
-----------
1
(1 row)
SELECT EXTRACT(CENTURY FROM INTERVAL '99 y'); -- 0
date_part
-----------
0
(1 row)
SELECT EXTRACT(CENTURY FROM INTERVAL '-99 y'); -- 0
date_part
-----------
0
(1 row)
SELECT EXTRACT(CENTURY FROM INTERVAL '-100 y'); -- -1
date_part
-----------
-1
(1 row)
--
-- test trunc function!
--
SELECT DATE_TRUNC('MILLENNIUM', TIMESTAMP '1970-03-20 04:30:00.00000'); -- 1001
date_trunc
--------------------------
Thu Jan 01 00:00:00 1001
(1 row)
SELECT DATE_TRUNC('MILLENNIUM', DATE '1970-03-20'); -- 1001-01-01
date_trunc
------------------------------
Thu Jan 01 00:00:00 1001 PST
(1 row)
SELECT DATE_TRUNC('CENTURY', TIMESTAMP '1970-03-20 04:30:00.00000'); -- 1901
date_trunc
--------------------------
Tue Jan 01 00:00:00 1901
(1 row)
SELECT DATE_TRUNC('CENTURY', DATE '1970-03-20'); -- 1901
date_trunc
------------------------------
Tue Jan 01 00:00:00 1901 PST
(1 row)
SELECT DATE_TRUNC('CENTURY', DATE '2004-08-10'); -- 2001-01-01
date_trunc
------------------------------
Mon Jan 01 00:00:00 2001 PST
(1 row)
SELECT DATE_TRUNC('CENTURY', DATE '0002-02-04'); -- 0001-01-01
date_trunc
------------------------------
Mon Jan 01 00:00:00 0001 PST
(1 row)
SELECT DATE_TRUNC('CENTURY', DATE '0055-08-10 BC'); -- 0100-01-01 BC
date_trunc
---------------------------------
Tue Jan 01 00:00:00 0100 PST BC
(1 row)
SELECT DATE_TRUNC('DECADE', DATE '1993-12-25'); -- 1990-01-01
date_trunc
------------------------------
Mon Jan 01 00:00:00 1990 PST
(1 row)
SELECT DATE_TRUNC('DECADE', DATE '0004-12-25'); -- 0001-01-01 BC
date_trunc
---------------------------------
Sat Jan 01 00:00:00 0001 PST BC
(1 row)
SELECT DATE_TRUNC('DECADE', DATE '0002-12-31 BC'); -- 0011-01-01 BC
date_trunc
---------------------------------
Mon Jan 01 00:00:00 0011 PST BC
(1 row)
--
-- test infinity
--
select 'infinity'::date, '-infinity'::date;
date | date
----------+-----------
infinity | -infinity
(1 row)
select 'infinity'::date > 'today'::date as t;
t
---
t
(1 row)
select '-infinity'::date < 'today'::date as t;
t
---
t
(1 row)
select isfinite('infinity'::date), isfinite('-infinity'::date), isfinite('today'::date);
isfinite | isfinite | isfinite
----------+----------+----------
f | f | t
(1 row)
--
-- oscillating fields from non-finite date/timestamptz:
--
SELECT EXTRACT(HOUR FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(HOUR FROM DATE '-infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(HOUR FROM TIMESTAMP 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(HOUR FROM TIMESTAMP '-infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(HOUR FROM TIMESTAMPTZ 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(HOUR FROM TIMESTAMPTZ '-infinity'); -- NULL
date_part
-----------
(1 row)
-- all possible fields
SELECT EXTRACT(MICROSECONDS FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(MILLISECONDS FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(SECOND FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(MINUTE FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(HOUR FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(DAY FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(MONTH FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(QUARTER FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(WEEK FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(DOW FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(ISODOW FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(DOY FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(TIMEZONE FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(TIMEZONE_M FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
SELECT EXTRACT(TIMEZONE_H FROM DATE 'infinity'); -- NULL
date_part
-----------
(1 row)
--
-- monotonic fields from non-finite date/timestamptz:
--
SELECT EXTRACT(EPOCH FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(EPOCH FROM DATE '-infinity'); -- -Infinity
date_part
-----------
-Infinity
(1 row)
SELECT EXTRACT(EPOCH FROM TIMESTAMP 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(EPOCH FROM TIMESTAMP '-infinity'); -- -Infinity
date_part
-----------
-Infinity
(1 row)
SELECT EXTRACT(EPOCH FROM TIMESTAMPTZ 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(EPOCH FROM TIMESTAMPTZ '-infinity'); -- -Infinity
date_part
-----------
-Infinity
(1 row)
-- all possible fields
SELECT EXTRACT(YEAR FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(DECADE FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(CENTURY FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(MILLENNIUM FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(JULIAN FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(ISOYEAR FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
SELECT EXTRACT(EPOCH FROM DATE 'infinity'); -- Infinity
date_part
-----------
Infinity
(1 row)
--
-- wrong fields from non-finite date:
--
SELECT EXTRACT(MICROSEC FROM DATE 'infinity'); -- ERROR: timestamp units "microsec" not recognized
ERROR: timestamp units "microsec" not recognized
CONTEXT: SQL function "date_part" statement 1
SELECT EXTRACT(UNDEFINED FROM DATE 'infinity'); -- ERROR: timestamp units "undefined" not supported
ERROR: timestamp units "undefined" not supported
CONTEXT: SQL function "date_part" statement 1
-- test constructors
select make_date(2013, 7, 15);
make_date
------------
07-15-2013
(1 row)
select make_date(-44, 3, 15);
make_date
---------------
03-15-0044 BC
(1 row)
select make_time(8, 20, 0.0);
make_time
-----------
08:20:00
(1 row)
-- should fail
select make_date(2013, 2, 30);
ERROR: date field value out of range: 2013-02-30
select make_date(2013, 13, 1);
ERROR: date field value out of range: 2013-13-01
select make_date(2013, 11, -1);
ERROR: date field value out of range: 2013-11--1
select make_time(10, 55, 100.1);
ERROR: time field value out of range: 10:55:100.1
select make_time(24, 0, 2.1);
ERROR: time field value out of range: 24:00:2.1
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