376 lines
12 KiB
SQL
376 lines
12 KiB
SQL
--
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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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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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INSERT INTO DATE_TBL VALUES ('2040-04-10 BC');
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SELECT f1 FROM DATE_TBL;
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SELECT f1 FROM DATE_TBL WHERE f1 < '2000-01-01';
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SELECT f1 FROM DATE_TBL
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WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01';
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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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SELECT date '1999-01-08';
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SELECT date '1999-01-18';
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SELECT date '1/8/1999';
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SELECT date '1/18/1999';
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SELECT date '18/1/1999';
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SELECT date '01/02/03';
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SELECT date '19990108';
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SELECT date '990108';
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SELECT date '1999.008';
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SELECT date 'J2451187';
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SELECT date 'January 8, 99 BC';
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SELECT date '99-Jan-08';
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SELECT date '1999-Jan-08';
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SELECT date '08-Jan-99';
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SELECT date '08-Jan-1999';
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SELECT date 'Jan-08-99';
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SELECT date 'Jan-08-1999';
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SELECT date '99-08-Jan';
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SELECT date '1999-08-Jan';
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SELECT date '99 Jan 08';
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SELECT date '1999 Jan 08';
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SELECT date '08 Jan 99';
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SELECT date '08 Jan 1999';
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SELECT date 'Jan 08 99';
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SELECT date 'Jan 08 1999';
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SELECT date '99 08 Jan';
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SELECT date '1999 08 Jan';
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SELECT date '99-01-08';
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SELECT date '1999-01-08';
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SELECT date '08-01-99';
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SELECT date '08-01-1999';
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SELECT date '01-08-99';
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SELECT date '01-08-1999';
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SELECT date '99-08-01';
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SELECT date '1999-08-01';
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SELECT date '99 01 08';
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SELECT date '1999 01 08';
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SELECT date '08 01 99';
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SELECT date '08 01 1999';
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SELECT date '01 08 99';
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SELECT date '01 08 1999';
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SELECT date '99 08 01';
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SELECT date '1999 08 01';
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SET datestyle TO dmy;
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SELECT date 'January 8, 1999';
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SELECT date '1999-01-08';
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SELECT date '1999-01-18';
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SELECT date '1/8/1999';
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SELECT date '1/18/1999';
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SELECT date '18/1/1999';
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SELECT date '01/02/03';
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SELECT date '19990108';
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SELECT date '990108';
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SELECT date '1999.008';
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SELECT date 'J2451187';
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SELECT date 'January 8, 99 BC';
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SELECT date '99-Jan-08';
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SELECT date '1999-Jan-08';
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SELECT date '08-Jan-99';
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SELECT date '08-Jan-1999';
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SELECT date 'Jan-08-99';
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SELECT date 'Jan-08-1999';
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SELECT date '99-08-Jan';
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SELECT date '1999-08-Jan';
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SELECT date '99 Jan 08';
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SELECT date '1999 Jan 08';
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SELECT date '08 Jan 99';
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SELECT date '08 Jan 1999';
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SELECT date 'Jan 08 99';
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SELECT date 'Jan 08 1999';
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SELECT date '99 08 Jan';
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SELECT date '1999 08 Jan';
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SELECT date '99-01-08';
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SELECT date '1999-01-08';
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SELECT date '08-01-99';
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SELECT date '08-01-1999';
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SELECT date '01-08-99';
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SELECT date '01-08-1999';
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SELECT date '99-08-01';
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SELECT date '1999-08-01';
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SELECT date '99 01 08';
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SELECT date '1999 01 08';
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SELECT date '08 01 99';
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SELECT date '08 01 1999';
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SELECT date '01 08 99';
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SELECT date '01 08 1999';
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SELECT date '99 08 01';
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SELECT date '1999 08 01';
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SET datestyle TO mdy;
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SELECT date 'January 8, 1999';
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SELECT date '1999-01-08';
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SELECT date '1999-01-18';
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SELECT date '1/8/1999';
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SELECT date '1/18/1999';
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SELECT date '18/1/1999';
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SELECT date '01/02/03';
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SELECT date '19990108';
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SELECT date '990108';
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SELECT date '1999.008';
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SELECT date 'J2451187';
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SELECT date 'January 8, 99 BC';
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SELECT date '99-Jan-08';
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SELECT date '1999-Jan-08';
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SELECT date '08-Jan-99';
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SELECT date '08-Jan-1999';
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SELECT date 'Jan-08-99';
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SELECT date 'Jan-08-1999';
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SELECT date '99-08-Jan';
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SELECT date '1999-08-Jan';
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SELECT date '99 Jan 08';
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SELECT date '1999 Jan 08';
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SELECT date '08 Jan 99';
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SELECT date '08 Jan 1999';
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SELECT date 'Jan 08 99';
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SELECT date 'Jan 08 1999';
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SELECT date '99 08 Jan';
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SELECT date '1999 08 Jan';
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SELECT date '99-01-08';
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SELECT date '1999-01-08';
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SELECT date '08-01-99';
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SELECT date '08-01-1999';
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SELECT date '01-08-99';
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SELECT date '01-08-1999';
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SELECT date '99-08-01';
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SELECT date '1999-08-01';
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SELECT date '99 01 08';
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SELECT date '1999 01 08';
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SELECT date '08 01 99';
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SELECT date '08 01 1999';
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SELECT date '01 08 99';
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SELECT date '01 08 1999';
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SELECT date '99 08 01';
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SELECT date '1999 08 01';
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-- Check upper and lower limits of date range
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SELECT date '4714-11-24 BC';
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SELECT date '4714-11-23 BC'; -- out of range
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SELECT date '5874897-12-31';
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SELECT date '5874898-01-01'; -- out of range
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-- Test non-error-throwing API
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SELECT pg_input_is_valid('now', 'date');
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SELECT pg_input_is_valid('garbage', 'date');
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SELECT pg_input_is_valid('6874898-01-01', 'date');
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SELECT * FROM pg_input_error_info('garbage', 'date');
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SELECT * FROM pg_input_error_info('6874898-01-01', 'date');
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RESET datestyle;
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--
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-- Simple math
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-- Leave most of it for the horology tests
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--
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SELECT f1 - date '2000-01-01' AS "Days From 2K" FROM DATE_TBL;
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SELECT f1 - date 'epoch' AS "Days From Epoch" FROM DATE_TBL;
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SELECT date 'yesterday' - date 'today' AS "One day";
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SELECT date 'today' - date 'tomorrow' AS "One day";
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SELECT date 'yesterday' - date 'tomorrow' AS "Two days";
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SELECT date 'tomorrow' - date 'today' AS "One day";
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SELECT date 'today' - date 'yesterday' AS "One day";
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SELECT date 'tomorrow' - date 'yesterday' AS "Two days";
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--
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-- test extract!
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--
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SELECT f1 as "date",
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date_part('year', f1) AS year,
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date_part('month', f1) AS month,
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date_part('day', f1) AS day,
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date_part('quarter', f1) AS quarter,
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date_part('decade', f1) AS decade,
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date_part('century', f1) AS century,
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date_part('millennium', f1) AS millennium,
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date_part('isoyear', f1) AS isoyear,
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date_part('week', f1) AS week,
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date_part('dow', f1) AS dow,
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date_part('isodow', f1) AS isodow,
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date_part('doy', f1) AS doy,
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date_part('julian', f1) AS julian,
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date_part('epoch', f1) AS epoch
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FROM date_tbl;
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--
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-- epoch
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--
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SELECT EXTRACT(EPOCH FROM DATE '1970-01-01'); -- 0
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--
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-- century
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--
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SELECT EXTRACT(CENTURY FROM DATE '0101-12-31 BC'); -- -2
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SELECT EXTRACT(CENTURY FROM DATE '0100-12-31 BC'); -- -1
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SELECT EXTRACT(CENTURY FROM DATE '0001-12-31 BC'); -- -1
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SELECT EXTRACT(CENTURY FROM DATE '0001-01-01'); -- 1
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SELECT EXTRACT(CENTURY FROM DATE '0001-01-01 AD'); -- 1
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SELECT EXTRACT(CENTURY FROM DATE '1900-12-31'); -- 19
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SELECT EXTRACT(CENTURY FROM DATE '1901-01-01'); -- 20
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SELECT EXTRACT(CENTURY FROM DATE '2000-12-31'); -- 20
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SELECT EXTRACT(CENTURY FROM DATE '2001-01-01'); -- 21
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SELECT EXTRACT(CENTURY FROM CURRENT_DATE)>=21 AS True; -- true
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--
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-- millennium
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--
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SELECT EXTRACT(MILLENNIUM FROM DATE '0001-12-31 BC'); -- -1
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SELECT EXTRACT(MILLENNIUM FROM DATE '0001-01-01 AD'); -- 1
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SELECT EXTRACT(MILLENNIUM FROM DATE '1000-12-31'); -- 1
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SELECT EXTRACT(MILLENNIUM FROM DATE '1001-01-01'); -- 2
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SELECT EXTRACT(MILLENNIUM FROM DATE '2000-12-31'); -- 2
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SELECT EXTRACT(MILLENNIUM FROM DATE '2001-01-01'); -- 3
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-- next test to be fixed on the turn of the next millennium;-)
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SELECT EXTRACT(MILLENNIUM FROM CURRENT_DATE); -- 3
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--
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-- decade
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--
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SELECT EXTRACT(DECADE FROM DATE '1994-12-25'); -- 199
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SELECT EXTRACT(DECADE FROM DATE '0010-01-01'); -- 1
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SELECT EXTRACT(DECADE FROM DATE '0009-12-31'); -- 0
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SELECT EXTRACT(DECADE FROM DATE '0001-01-01 BC'); -- 0
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SELECT EXTRACT(DECADE FROM DATE '0002-12-31 BC'); -- -1
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SELECT EXTRACT(DECADE FROM DATE '0011-01-01 BC'); -- -1
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SELECT EXTRACT(DECADE FROM DATE '0012-12-31 BC'); -- -2
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--
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-- all possible fields
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--
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SELECT EXTRACT(MICROSECONDS FROM DATE '2020-08-11');
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SELECT EXTRACT(MILLISECONDS FROM DATE '2020-08-11');
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SELECT EXTRACT(SECOND FROM DATE '2020-08-11');
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SELECT EXTRACT(MINUTE FROM DATE '2020-08-11');
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SELECT EXTRACT(HOUR FROM DATE '2020-08-11');
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SELECT EXTRACT(DAY FROM DATE '2020-08-11');
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SELECT EXTRACT(MONTH FROM DATE '2020-08-11');
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SELECT EXTRACT(YEAR FROM DATE '2020-08-11');
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SELECT EXTRACT(YEAR FROM DATE '2020-08-11 BC');
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SELECT EXTRACT(DECADE FROM DATE '2020-08-11');
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SELECT EXTRACT(CENTURY FROM DATE '2020-08-11');
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SELECT EXTRACT(MILLENNIUM FROM DATE '2020-08-11');
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SELECT EXTRACT(ISOYEAR FROM DATE '2020-08-11');
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SELECT EXTRACT(ISOYEAR FROM DATE '2020-08-11 BC');
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SELECT EXTRACT(QUARTER FROM DATE '2020-08-11');
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SELECT EXTRACT(WEEK FROM DATE '2020-08-11');
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SELECT EXTRACT(DOW FROM DATE '2020-08-11');
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SELECT EXTRACT(DOW FROM DATE '2020-08-16');
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SELECT EXTRACT(ISODOW FROM DATE '2020-08-11');
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SELECT EXTRACT(ISODOW FROM DATE '2020-08-16');
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SELECT EXTRACT(DOY FROM DATE '2020-08-11');
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SELECT EXTRACT(TIMEZONE FROM DATE '2020-08-11');
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SELECT EXTRACT(TIMEZONE_M FROM DATE '2020-08-11');
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SELECT EXTRACT(TIMEZONE_H FROM DATE '2020-08-11');
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SELECT EXTRACT(EPOCH FROM DATE '2020-08-11');
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SELECT EXTRACT(JULIAN FROM DATE '2020-08-11');
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--
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-- test trunc function!
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--
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SELECT DATE_TRUNC('MILLENNIUM', TIMESTAMP '1970-03-20 04:30:00.00000'); -- 1001
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SELECT DATE_TRUNC('MILLENNIUM', DATE '1970-03-20'); -- 1001-01-01
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SELECT DATE_TRUNC('CENTURY', TIMESTAMP '1970-03-20 04:30:00.00000'); -- 1901
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SELECT DATE_TRUNC('CENTURY', DATE '1970-03-20'); -- 1901
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SELECT DATE_TRUNC('CENTURY', DATE '2004-08-10'); -- 2001-01-01
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SELECT DATE_TRUNC('CENTURY', DATE '0002-02-04'); -- 0001-01-01
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SELECT DATE_TRUNC('CENTURY', DATE '0055-08-10 BC'); -- 0100-01-01 BC
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SELECT DATE_TRUNC('DECADE', DATE '1993-12-25'); -- 1990-01-01
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SELECT DATE_TRUNC('DECADE', DATE '0004-12-25'); -- 0001-01-01 BC
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SELECT DATE_TRUNC('DECADE', DATE '0002-12-31 BC'); -- 0011-01-01 BC
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--
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-- test infinity
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--
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select 'infinity'::date, '-infinity'::date;
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select 'infinity'::date > 'today'::date as t;
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select '-infinity'::date < 'today'::date as t;
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select isfinite('infinity'::date), isfinite('-infinity'::date), isfinite('today'::date);
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select 'infinity'::date = '+infinity'::date as t;
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--
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-- oscillating fields from non-finite date:
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--
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SELECT EXTRACT(DAY FROM DATE 'infinity'); -- NULL
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SELECT EXTRACT(DAY FROM DATE '-infinity'); -- NULL
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-- all supported fields
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SELECT EXTRACT(DAY FROM DATE 'infinity'); -- NULL
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SELECT EXTRACT(MONTH FROM DATE 'infinity'); -- NULL
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SELECT EXTRACT(QUARTER FROM DATE 'infinity'); -- NULL
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SELECT EXTRACT(WEEK FROM DATE 'infinity'); -- NULL
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SELECT EXTRACT(DOW FROM DATE 'infinity'); -- NULL
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SELECT EXTRACT(ISODOW FROM DATE 'infinity'); -- NULL
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SELECT EXTRACT(DOY FROM DATE 'infinity'); -- NULL
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--
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-- monotonic fields from non-finite date:
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--
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SELECT EXTRACT(EPOCH FROM DATE 'infinity'); -- Infinity
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SELECT EXTRACT(EPOCH FROM DATE '-infinity'); -- -Infinity
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-- all supported fields
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SELECT EXTRACT(YEAR FROM DATE 'infinity'); -- Infinity
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SELECT EXTRACT(DECADE FROM DATE 'infinity'); -- Infinity
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SELECT EXTRACT(CENTURY FROM DATE 'infinity'); -- Infinity
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SELECT EXTRACT(MILLENNIUM FROM DATE 'infinity'); -- Infinity
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SELECT EXTRACT(JULIAN FROM DATE 'infinity'); -- Infinity
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SELECT EXTRACT(ISOYEAR FROM DATE 'infinity'); -- Infinity
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SELECT EXTRACT(EPOCH FROM DATE 'infinity'); -- Infinity
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--
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-- wrong fields from non-finite date:
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--
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SELECT EXTRACT(MICROSEC FROM DATE 'infinity'); -- error
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-- test constructors
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select make_date(2013, 7, 15);
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select make_date(-44, 3, 15);
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select make_time(8, 20, 0.0);
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-- should fail
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select make_date(0, 7, 15);
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select make_date(2013, 2, 30);
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select make_date(2013, 13, 1);
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select make_date(2013, 11, -1);
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select make_time(10, 55, 100.1);
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select make_time(24, 0, 2.1);
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