1455 lines
27 KiB
Plaintext
1455 lines
27 KiB
Plaintext
--
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-- DATE
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--
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CREATE TABLE DATE_TBL (f1 date);
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INSERT INTO DATE_TBL VALUES ('1957-04-09');
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INSERT INTO DATE_TBL VALUES ('1957-06-13');
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INSERT INTO DATE_TBL VALUES ('1996-02-28');
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INSERT INTO DATE_TBL VALUES ('1996-02-29');
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INSERT INTO DATE_TBL VALUES ('1996-03-01');
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INSERT INTO DATE_TBL VALUES ('1996-03-02');
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INSERT INTO DATE_TBL VALUES ('1997-02-28');
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INSERT INTO DATE_TBL VALUES ('1997-02-29');
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ERROR: date/time field value out of range: "1997-02-29"
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LINE 1: INSERT INTO DATE_TBL VALUES ('1997-02-29');
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^
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INSERT INTO DATE_TBL VALUES ('1997-03-01');
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INSERT INTO DATE_TBL VALUES ('1997-03-02');
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INSERT INTO DATE_TBL VALUES ('2000-04-01');
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INSERT INTO DATE_TBL VALUES ('2000-04-02');
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INSERT INTO DATE_TBL VALUES ('2000-04-03');
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INSERT INTO DATE_TBL VALUES ('2038-04-08');
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INSERT INTO DATE_TBL VALUES ('2039-04-09');
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INSERT INTO DATE_TBL VALUES ('2040-04-10');
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SELECT f1 AS "Fifteen" FROM DATE_TBL;
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Fifteen
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------------
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04-09-1957
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06-13-1957
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02-28-1996
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02-29-1996
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03-01-1996
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03-02-1996
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02-28-1997
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03-01-1997
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03-02-1997
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04-01-2000
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04-02-2000
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04-03-2000
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04-08-2038
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04-09-2039
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04-10-2040
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(15 rows)
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SELECT f1 AS "Nine" FROM DATE_TBL WHERE f1 < '2000-01-01';
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Nine
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------------
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04-09-1957
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06-13-1957
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02-28-1996
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02-29-1996
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03-01-1996
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03-02-1996
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02-28-1997
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03-01-1997
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03-02-1997
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(9 rows)
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SELECT f1 AS "Three" FROM DATE_TBL
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WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01';
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Three
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------------
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04-01-2000
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04-02-2000
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04-03-2000
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(3 rows)
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--
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-- Check all the documented input formats
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--
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SET datestyle TO iso; -- display results in ISO
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SET datestyle TO ymd;
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SELECT date 'January 8, 1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999-01-08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999-01-18';
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date
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------------
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1999-01-18
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(1 row)
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SELECT date '1/8/1999';
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ERROR: date/time field value out of range: "1/8/1999"
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LINE 1: SELECT date '1/8/1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '1/18/1999';
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ERROR: date/time field value out of range: "1/18/1999"
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LINE 1: SELECT date '1/18/1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '18/1/1999';
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ERROR: date/time field value out of range: "18/1/1999"
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LINE 1: SELECT date '18/1/1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '01/02/03';
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date
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------------
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2001-02-03
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(1 row)
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SELECT date '19990108';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '990108';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999.008';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'J2451187';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'January 8, 99 BC';
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ERROR: date/time field value out of range: "January 8, 99 BC"
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LINE 1: SELECT date 'January 8, 99 BC';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '99-Jan-08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999-Jan-08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '08-Jan-99';
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ERROR: date/time field value out of range: "08-Jan-99"
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LINE 1: SELECT date '08-Jan-99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '08-Jan-1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'Jan-08-99';
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ERROR: date/time field value out of range: "Jan-08-99"
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LINE 1: SELECT date 'Jan-08-99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date 'Jan-08-1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '99-08-Jan';
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ERROR: invalid input syntax for type date: "99-08-Jan"
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LINE 1: SELECT date '99-08-Jan';
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^
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SELECT date '1999-08-Jan';
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ERROR: invalid input syntax for type date: "1999-08-Jan"
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LINE 1: SELECT date '1999-08-Jan';
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^
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SELECT date '99 Jan 08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999 Jan 08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '08 Jan 99';
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ERROR: date/time field value out of range: "08 Jan 99"
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LINE 1: SELECT date '08 Jan 99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '08 Jan 1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'Jan 08 99';
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ERROR: date/time field value out of range: "Jan 08 99"
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LINE 1: SELECT date 'Jan 08 99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date 'Jan 08 1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '99 08 Jan';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999 08 Jan';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '99-01-08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999-01-08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '08-01-99';
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ERROR: date/time field value out of range: "08-01-99"
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LINE 1: SELECT date '08-01-99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '08-01-1999';
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ERROR: date/time field value out of range: "08-01-1999"
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LINE 1: SELECT date '08-01-1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '01-08-99';
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ERROR: date/time field value out of range: "01-08-99"
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LINE 1: SELECT date '01-08-99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '01-08-1999';
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ERROR: date/time field value out of range: "01-08-1999"
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LINE 1: SELECT date '01-08-1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '99-08-01';
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date
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------------
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1999-08-01
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(1 row)
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SELECT date '1999-08-01';
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date
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------------
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1999-08-01
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(1 row)
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SELECT date '99 01 08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999 01 08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '08 01 99';
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ERROR: date/time field value out of range: "08 01 99"
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LINE 1: SELECT date '08 01 99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '08 01 1999';
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ERROR: date/time field value out of range: "08 01 1999"
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LINE 1: SELECT date '08 01 1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '01 08 99';
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ERROR: date/time field value out of range: "01 08 99"
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LINE 1: SELECT date '01 08 99';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '01 08 1999';
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ERROR: date/time field value out of range: "01 08 1999"
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LINE 1: SELECT date '01 08 1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '99 08 01';
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date
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------------
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1999-08-01
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(1 row)
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SELECT date '1999 08 01';
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date
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------------
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1999-08-01
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(1 row)
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SET datestyle TO dmy;
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SELECT date 'January 8, 1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999-01-08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999-01-18';
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date
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------------
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1999-01-18
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(1 row)
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SELECT date '1/8/1999';
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date
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------------
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1999-08-01
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(1 row)
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SELECT date '1/18/1999';
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ERROR: date/time field value out of range: "1/18/1999"
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LINE 1: SELECT date '1/18/1999';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '18/1/1999';
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date
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------------
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1999-01-18
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(1 row)
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SELECT date '01/02/03';
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date
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------------
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2003-02-01
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(1 row)
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SELECT date '19990108';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '990108';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '1999.008';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'J2451187';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'January 8, 99 BC';
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date
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---------------
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0099-01-08 BC
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(1 row)
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SELECT date '99-Jan-08';
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ERROR: date/time field value out of range: "99-Jan-08"
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LINE 1: SELECT date '99-Jan-08';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '1999-Jan-08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '08-Jan-99';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '08-Jan-1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'Jan-08-99';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date 'Jan-08-1999';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '99-08-Jan';
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ERROR: invalid input syntax for type date: "99-08-Jan"
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LINE 1: SELECT date '99-08-Jan';
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^
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SELECT date '1999-08-Jan';
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ERROR: invalid input syntax for type date: "1999-08-Jan"
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LINE 1: SELECT date '1999-08-Jan';
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^
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SELECT date '99 Jan 08';
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ERROR: date/time field value out of range: "99 Jan 08"
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LINE 1: SELECT date '99 Jan 08';
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^
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HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '1999 Jan 08';
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date
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------------
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1999-01-08
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(1 row)
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SELECT date '08 Jan 99';
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date
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------------
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1999-01-08
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(1 row)
|
|
|
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SELECT date '08 Jan 1999';
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date
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------------
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1999-01-08
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(1 row)
|
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|
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SELECT date 'Jan 08 99';
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date
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------------
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1999-01-08
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(1 row)
|
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|
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SELECT date 'Jan 08 1999';
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date
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------------
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1999-01-08
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(1 row)
|
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|
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SELECT date '99 08 Jan';
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ERROR: invalid input syntax for type date: "99 08 Jan"
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LINE 1: SELECT date '99 08 Jan';
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^
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SELECT date '1999 08 Jan';
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date
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------------
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1999-01-08
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(1 row)
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|
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SELECT date '99-01-08';
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ERROR: date/time field value out of range: "99-01-08"
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LINE 1: SELECT date '99-01-08';
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^
|
|
HINT: Perhaps you need a different "datestyle" setting.
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SELECT date '1999-01-08';
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|
date
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------------
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1999-01-08
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|
(1 row)
|
|
|
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SELECT date '08-01-99';
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|
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';
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|
^
|
|
HINT: Perhaps you need a different "datestyle" setting.
|
|
SELECT date '1999-08-01';
|
|
date
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|
------------
|
|
1999-08-01
|
|
(1 row)
|
|
|
|
SELECT date '99 01 08';
|
|
ERROR: date/time field value out of range: "99 01 08"
|
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LINE 1: SELECT date '99 01 08';
|
|
^
|
|
HINT: Perhaps you need a different "datestyle" setting.
|
|
SELECT date '1999 01 08';
|
|
date
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|
------------
|
|
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)
|
|
|
|
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_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_date(-44, 3, 15); -- perhaps we should allow this sometime?
|
|
ERROR: date field value out of range: -44-03-15
|
|
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
|