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postgres/src/test/regress/sql/date.sql

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Add regression tests for date, time, and time with time zone types. Modify date->timestamp conversion to use mktime(). This should do better than before around Daylight Savings Time transitions.
26 years ago
--
-- 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');
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;
SELECT f1 AS "Nine" FROM DATE_TBL WHERE f1 < '2000-01-01';
SELECT f1 AS "Three" FROM DATE_TBL
WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01';
Fix datetime input parsing to accept YYYY-MONTHNAME-DD and related syntaxes, which had been unintentionally broken by recent changes to tighten up the DateStyle rules for all-numeric date input. Add documentation and regression tests for this, too.
22 years ago
--
-- Check all the documented input formats
--
SET datestyle TO iso; -- display results in ISO
SET datestyle TO ymd;
SELECT date 'January 8, 1999';
SELECT date '1999-01-08';
SELECT date '1999-01-18';
SELECT date '1/8/1999';
SELECT date '1/18/1999';
SELECT date '18/1/1999';
SELECT date '01/02/03';
SELECT date '19990108';
SELECT date '990108';
SELECT date '1999.008';
SELECT date 'J2451187';
SELECT date 'January 8, 99 BC';
SELECT date '99-Jan-08';
SELECT date '1999-Jan-08';
SELECT date '08-Jan-99';
SELECT date '08-Jan-1999';
SELECT date 'Jan-08-99';
SELECT date 'Jan-08-1999';
SELECT date '99-08-Jan';
SELECT date '1999-08-Jan';
SELECT date '99 Jan 08';
SELECT date '1999 Jan 08';
SELECT date '08 Jan 99';
SELECT date '08 Jan 1999';
SELECT date 'Jan 08 99';
SELECT date 'Jan 08 1999';
SELECT date '99 08 Jan';
SELECT date '1999 08 Jan';
SELECT date '99-01-08';
SELECT date '1999-01-08';
SELECT date '08-01-99';
SELECT date '08-01-1999';
SELECT date '01-08-99';
SELECT date '01-08-1999';
SELECT date '99-08-01';
SELECT date '1999-08-01';
SELECT date '99 01 08';
SELECT date '1999 01 08';
SELECT date '08 01 99';
SELECT date '08 01 1999';
SELECT date '01 08 99';
SELECT date '01 08 1999';
SELECT date '99 08 01';
SELECT date '1999 08 01';
SET datestyle TO dmy;
SELECT date 'January 8, 1999';
SELECT date '1999-01-08';
SELECT date '1999-01-18';
SELECT date '1/8/1999';
SELECT date '1/18/1999';
SELECT date '18/1/1999';
SELECT date '01/02/03';
SELECT date '19990108';
SELECT date '990108';
SELECT date '1999.008';
SELECT date 'J2451187';
SELECT date 'January 8, 99 BC';
SELECT date '99-Jan-08';
SELECT date '1999-Jan-08';
SELECT date '08-Jan-99';
SELECT date '08-Jan-1999';
SELECT date 'Jan-08-99';
SELECT date 'Jan-08-1999';
SELECT date '99-08-Jan';
SELECT date '1999-08-Jan';
SELECT date '99 Jan 08';
SELECT date '1999 Jan 08';
SELECT date '08 Jan 99';
SELECT date '08 Jan 1999';
SELECT date 'Jan 08 99';
SELECT date 'Jan 08 1999';
SELECT date '99 08 Jan';
SELECT date '1999 08 Jan';
SELECT date '99-01-08';
SELECT date '1999-01-08';
SELECT date '08-01-99';
SELECT date '08-01-1999';
SELECT date '01-08-99';
SELECT date '01-08-1999';
SELECT date '99-08-01';
SELECT date '1999-08-01';
SELECT date '99 01 08';
SELECT date '1999 01 08';
SELECT date '08 01 99';
SELECT date '08 01 1999';
SELECT date '01 08 99';
SELECT date '01 08 1999';
SELECT date '99 08 01';
SELECT date '1999 08 01';
SET datestyle TO mdy;
SELECT date 'January 8, 1999';
SELECT date '1999-01-08';
SELECT date '1999-01-18';
SELECT date '1/8/1999';
SELECT date '1/18/1999';
SELECT date '18/1/1999';
SELECT date '01/02/03';
SELECT date '19990108';
SELECT date '990108';
SELECT date '1999.008';
SELECT date 'J2451187';
SELECT date 'January 8, 99 BC';
SELECT date '99-Jan-08';
SELECT date '1999-Jan-08';
SELECT date '08-Jan-99';
SELECT date '08-Jan-1999';
SELECT date 'Jan-08-99';
SELECT date 'Jan-08-1999';
SELECT date '99-08-Jan';
SELECT date '1999-08-Jan';
SELECT date '99 Jan 08';
SELECT date '1999 Jan 08';
SELECT date '08 Jan 99';
SELECT date '08 Jan 1999';
SELECT date 'Jan 08 99';
SELECT date 'Jan 08 1999';
SELECT date '99 08 Jan';
SELECT date '1999 08 Jan';
SELECT date '99-01-08';
SELECT date '1999-01-08';
SELECT date '08-01-99';
SELECT date '08-01-1999';
SELECT date '01-08-99';
SELECT date '01-08-1999';
SELECT date '99-08-01';
SELECT date '1999-08-01';
SELECT date '99 01 08';
SELECT date '1999 01 08';
SELECT date '08 01 99';
SELECT date '08 01 1999';
SELECT date '01 08 99';
SELECT date '01 08 1999';
SELECT date '99 08 01';
SELECT date '1999 08 01';
RESET datestyle;
Add regression tests for date, time, and time with time zone types. Modify date->timestamp conversion to use mktime(). This should do better than before around Daylight Savings Time transitions.
26 years ago
--
-- Simple math
-- Leave most of it for the horology tests
--
SELECT f1 - date '2000-01-01' AS "Days From 2K" FROM DATE_TBL;
SELECT f1 - date 'epoch' AS "Days From Epoch" FROM DATE_TBL;
SELECT date 'yesterday' - date 'today' AS "One day";
SELECT date 'today' - date 'tomorrow' AS "One day";
SELECT date 'yesterday' - date 'tomorrow' AS "Two days";
SELECT date 'tomorrow' - date 'today' AS "One day";
SELECT date 'today' - date 'yesterday' AS "One day";
SELECT date 'tomorrow' - date 'yesterday' AS "Two days";
Please find a small patch to fix the brain damage "century" and "millennium" date part implementation in postgresql, both in the code and the documentation, so that it conforms to the official definition. If you do not agree with the official definition, please send your complaint to "pope@vatican.org". I'm not responsible for them;-) With the previous version, the centuries and millenniums had a wrong number and started the wrong year. Moreover century number 0, which does not exist in reality, lasted 200 years. Also, millennium number 0 lasted 2000 years. If you want postgresql to have it's own definition of "century" and "millennium" that does not conform to the one of the society, just give them another name. I would suggest "pgCENTURY" and "pgMILLENNIUM";-) IMO, if someone may use the options, it means that postgresql is used for historical data, so it make sense to have an historical definition. Also, I just want to divide the year by 100 or 1000, I can do that quite easily. BACKWARD INCOMPATIBLE CHANGE Fabien Coelho - coelho@cri.ensmp.fr
22 years ago
--
-- test extract!
--
-- century
--
SELECT EXTRACT(CENTURY FROM DATE '0101-12-31 BC'); -- -2
SELECT EXTRACT(CENTURY FROM DATE '0100-12-31 BC'); -- -1
SELECT EXTRACT(CENTURY FROM DATE '0001-12-31 BC'); -- -1
SELECT EXTRACT(CENTURY FROM DATE '0001-01-01'); -- 1
SELECT EXTRACT(CENTURY FROM DATE '0001-01-01 AD'); -- 1
SELECT EXTRACT(CENTURY FROM DATE '1900-12-31'); -- 19
SELECT EXTRACT(CENTURY FROM DATE '1901-01-01'); -- 20
SELECT EXTRACT(CENTURY FROM DATE '2000-12-31'); -- 20
SELECT EXTRACT(CENTURY FROM DATE '2001-01-01'); -- 21
SELECT EXTRACT(CENTURY FROM CURRENT_DATE)>=21 AS True; -- true
--
-- millennium
--
SELECT EXTRACT(MILLENNIUM FROM DATE '0001-12-31 BC'); -- -1
SELECT EXTRACT(MILLENNIUM FROM DATE '0001-01-01 AD'); -- 1
SELECT EXTRACT(MILLENNIUM FROM DATE '1000-12-31'); -- 1
SELECT EXTRACT(MILLENNIUM FROM DATE '1001-01-01'); -- 2
SELECT EXTRACT(MILLENNIUM FROM DATE '2000-12-31'); -- 2
SELECT EXTRACT(MILLENNIUM FROM DATE '2001-01-01'); -- 3
-- next test to be fixed on the turn of the next millennium;-)
SELECT EXTRACT(MILLENNIUM FROM CURRENT_DATE); -- 3