-- -- 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'); INSERT INTO DATE_TBL VALUES ('2040-04-10 BC'); -- -- 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 '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 '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 '1999-Jan-08'; date ------------ 1999-01-08 (1 row) SELECT date '08-Jan-1999'; 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 '1999 Jan 08'; date ------------ 1999-01-08 (1 row) SELECT date '08 Jan 1999'; date ------------ 1999-01-08 (1 row) SELECT date 'Jan 08 1999'; date ------------ 1999-01-08 (1 row) SELECT date '1999 08 Jan'; date ------------ 1999-01-08 (1 row) SELECT date '1999-01-08'; date ------------ 1999-01-08 (1 row) SELECT date '1999-08-01'; date ------------ 1999-08-01 (1 row) SELECT date '1999 01 08'; date ------------ 1999-01-08 (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 '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 '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 '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 '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 -1475115 (16 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 -1464158 (16 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) -- -- century -- SELECT EXTRACT(CENTURY FROM DATE '0101-12-31 BC'); -- -2 extract --------- -2 (1 row) SELECT EXTRACT(CENTURY FROM DATE '0100-12-31 BC'); -- -1 extract --------- -1 (1 row) SELECT EXTRACT(CENTURY FROM DATE '0001-12-31 BC'); -- -1 extract --------- -1 (1 row) SELECT EXTRACT(CENTURY FROM DATE '0001-01-01'); -- 1 extract --------- 1 (1 row) SELECT EXTRACT(CENTURY FROM DATE '0001-01-01 AD'); -- 1 extract --------- 1 (1 row) SELECT EXTRACT(CENTURY FROM DATE '1900-12-31'); -- 19 extract --------- 19 (1 row) SELECT EXTRACT(CENTURY FROM DATE '1901-01-01'); -- 20 extract --------- 20 (1 row) SELECT EXTRACT(CENTURY FROM DATE '2000-12-31'); -- 20 extract --------- 20 (1 row) SELECT EXTRACT(CENTURY FROM DATE '2001-01-01'); -- 21 extract --------- 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 extract --------- -1 (1 row) SELECT EXTRACT(MILLENNIUM FROM DATE '0001-01-01 AD'); -- 1 extract --------- 1 (1 row) SELECT EXTRACT(MILLENNIUM FROM DATE '1000-12-31'); -- 1 extract --------- 1 (1 row) SELECT EXTRACT(MILLENNIUM FROM DATE '1001-01-01'); -- 2 extract --------- 2 (1 row) SELECT EXTRACT(MILLENNIUM FROM DATE '2000-12-31'); -- 2 extract --------- 2 (1 row) SELECT EXTRACT(MILLENNIUM FROM DATE '2001-01-01'); -- 3 extract --------- 3 (1 row) -- next test to be fixed on the turn of the next millennium;-) SELECT EXTRACT(MILLENNIUM FROM CURRENT_DATE); -- 3 extract --------- 3 (1 row) -- -- decade -- SELECT EXTRACT(DECADE FROM DATE '1994-12-25'); -- 199 extract --------- 199 (1 row) SELECT EXTRACT(DECADE FROM DATE '0010-01-01'); -- 1 extract --------- 1 (1 row) SELECT EXTRACT(DECADE FROM DATE '0002-12-31 BC'); -- -1 extract --------- -1 (1 row) SELECT EXTRACT(DECADE FROM DATE '0011-01-01 BC'); -- -1 extract --------- -1 (1 row) SELECT EXTRACT(DECADE FROM DATE '0012-12-31 BC'); -- -2 extract --------- -2 (1 row) -- -- all possible fields -- SELECT EXTRACT(MICROSECONDS FROM DATE '2020-08-11'); ERROR: date units "microseconds" not supported SELECT EXTRACT(MILLISECONDS FROM DATE '2020-08-11'); ERROR: date units "milliseconds" not supported SELECT EXTRACT(SECOND FROM DATE '2020-08-11'); ERROR: date units "second" not supported SELECT EXTRACT(MINUTE FROM DATE '2020-08-11'); ERROR: date units "minute" not supported SELECT EXTRACT(HOUR FROM DATE '2020-08-11'); ERROR: date units "hour" not supported SELECT EXTRACT(DAY FROM DATE '2020-08-11'); extract --------- 11 (1 row) SELECT EXTRACT(MONTH FROM DATE '2020-08-11'); extract --------- 8 (1 row) SELECT EXTRACT(YEAR FROM DATE '2020-08-11'); extract --------- 2020 (1 row) SELECT EXTRACT(YEAR FROM DATE '2020-08-11 BC'); extract --------- -2020 (1 row) SELECT EXTRACT(DECADE FROM DATE '2020-08-11'); extract --------- 202 (1 row) SELECT EXTRACT(CENTURY FROM DATE '2020-08-11'); extract --------- 21 (1 row) SELECT EXTRACT(MILLENNIUM FROM DATE '2020-08-11'); extract --------- 3 (1 row) SELECT EXTRACT(ISOYEAR FROM DATE '2020-08-11'); extract --------- 2020 (1 row) SELECT EXTRACT(ISOYEAR FROM DATE '2020-08-11 BC'); extract --------- -2020 (1 row) SELECT EXTRACT(QUARTER FROM DATE '2020-08-11'); extract --------- 3 (1 row) SELECT EXTRACT(WEEK FROM DATE '2020-08-11'); extract --------- 33 (1 row) SELECT EXTRACT(DOW FROM DATE '2020-08-11'); extract --------- 2 (1 row) SELECT EXTRACT(ISODOW FROM DATE '2020-08-11'); extract --------- 2 (1 row) SELECT EXTRACT(ISODOW FROM DATE '2020-08-16'); extract --------- 7 (1 row) SELECT EXTRACT(DOY FROM DATE '2020-08-11'); extract --------- 224 (1 row) SELECT EXTRACT(TIMEZONE FROM DATE '2020-08-11'); ERROR: date units "timezone" not supported SELECT EXTRACT(TIMEZONE_M FROM DATE '2020-08-11'); ERROR: date units "timezone_m" not supported SELECT EXTRACT(TIMEZONE_H FROM DATE '2020-08-11'); ERROR: date units "timezone_h" not supported SELECT EXTRACT(EPOCH FROM DATE '2020-08-11'); extract ------------ 1597104000 (1 row) SELECT EXTRACT(JULIAN FROM DATE '2020-08-11'); extract --------- 2459073 (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) -- -- oscillating fields from non-finite date: -- SELECT EXTRACT(DAY FROM DATE 'infinity'); -- NULL extract --------- (1 row) SELECT EXTRACT(DAY FROM DATE '-infinity'); -- NULL extract --------- (1 row) -- all supported fields SELECT EXTRACT(DAY FROM DATE 'infinity'); -- NULL extract --------- (1 row) SELECT EXTRACT(MONTH FROM DATE 'infinity'); -- NULL extract --------- (1 row) SELECT EXTRACT(QUARTER FROM DATE 'infinity'); -- NULL extract --------- (1 row) SELECT EXTRACT(WEEK FROM DATE 'infinity'); -- NULL extract --------- (1 row) SELECT EXTRACT(DOW FROM DATE 'infinity'); -- NULL extract --------- (1 row) SELECT EXTRACT(ISODOW FROM DATE 'infinity'); -- NULL extract --------- (1 row) SELECT EXTRACT(DOY FROM DATE 'infinity'); -- NULL extract --------- (1 row) -- -- monotonic fields from non-finite date: -- SELECT EXTRACT(EPOCH FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) SELECT EXTRACT(EPOCH FROM DATE '-infinity'); -- -Infinity extract ----------- -Infinity (1 row) -- all supported fields SELECT EXTRACT(YEAR FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) SELECT EXTRACT(DECADE FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) SELECT EXTRACT(CENTURY FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) SELECT EXTRACT(MILLENNIUM FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) SELECT EXTRACT(JULIAN FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) SELECT EXTRACT(ISOYEAR FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) SELECT EXTRACT(EPOCH FROM DATE 'infinity'); -- Infinity extract ---------- Infinity (1 row) -- -- wrong fields from non-finite date: -- SELECT EXTRACT(MICROSEC FROM DATE 'infinity'); -- error ERROR: date units "microsec" not recognized select make_time(8, 20, 0.0); make_time ----------- 08:20:00 (1 row) -- should fail select make_date(0, 7, 15); ERROR: date field value out of range: 0-07-15 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