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--
-- ABSTIME
-- testing built-in time type abstime
-- uses reltime and tinterval
--
--
-- timezones may vary based not only on location but the operating
-- system. the main correctness issue is that the OS may not get
-- daylight savings time right for times prior to Unix epoch (jan 1 1970).
--
CREATE TABLE ABSTIME_TBL (f1 abstime);
INSERT INTO ABSTIME_TBL (f1) VALUES ('Jan 14, 1973 03:14:21');
-- was INSERT INTO ABSTIME_TBL (f1) VALUES (abstime 'now'):
INSERT INTO ABSTIME_TBL (f1) VALUES (abstime 'Mon May 1 00:30:30 1995');
INSERT INTO ABSTIME_TBL (f1) VALUES (abstime 'epoch');
INSERT INTO ABSTIME_TBL (f1) VALUES (abstime 'current');
INSERT INTO ABSTIME_TBL (f1) VALUES (abstime 'infinity');
INSERT INTO ABSTIME_TBL (f1) VALUES (abstime '-infinity');
INSERT INTO ABSTIME_TBL (f1) VALUES (abstime 'May 10, 1947 23:59:12');
-- what happens if we specify slightly misformatted abstime?
INSERT INTO ABSTIME_TBL (f1) VALUES ('Feb 35, 1946 10:00:00');
INSERT INTO ABSTIME_TBL (f1) VALUES ('Feb 28, 1984 25:08:10');
-- badly formatted abstimes: these should result in invalid abstimes
INSERT INTO ABSTIME_TBL (f1) VALUES ('bad date format');
INSERT INTO ABSTIME_TBL (f1) VALUES ('Jun 10, 1843');
-- test abstime operators
SELECT '' AS eight, ABSTIME_TBL.*;
SELECT '' AS six, ABSTIME_TBL.*
WHERE ABSTIME_TBL.f1 < abstime 'Jun 30, 2001';
SELECT '' AS six, ABSTIME_TBL.*
WHERE ABSTIME_TBL.f1 > abstime '-infinity';
SELECT '' AS six, ABSTIME_TBL.*
WHERE abstime 'May 10, 1947 23:59:12' <> ABSTIME_TBL.f1;
SELECT '' AS one, ABSTIME_TBL.*
WHERE abstime 'current' = ABSTIME_TBL.f1;
SELECT '' AS three, ABSTIME_TBL.*
WHERE abstime 'epoch' >= ABSTIME_TBL.f1;
SELECT '' AS four, ABSTIME_TBL.*
WHERE ABSTIME_TBL.f1 <= abstime 'Jan 14, 1973 03:14:21';
SELECT '' AS four, ABSTIME_TBL.*
WHERE ABSTIME_TBL.f1 <?>
tinterval '["Apr 1 1950 00:00:00" "Dec 30 1999 23:00:00"]';
-- these four queries should return the same answer
-- the "infinity" and "-infinity" tuples in ABSTIME_TBL cannot be added and
-- therefore, should not show up in the results.
SELECT '' AS three, ABSTIME_TBL.*
WHERE (ABSTIME_TBL.f1 + reltime '@ 3 year') -- +3 years
< abstime 'Jan 14 14:00:00 1977';
SELECT '' AS three, ABSTIME_TBL.*
WHERE (ABSTIME_TBL.f1 + reltime '@ 3 year ago') -- -3 years
< abstime 'Jan 14 14:00:00 1971';
SELECT '' AS three, ABSTIME_TBL.*
WHERE (ABSTIME_TBL.f1 - reltime '@ 3 year') -- -(+3) years
< abstime 'Jan 14 14:00:00 1971';
SELECT '' AS three, ABSTIME_TBL.*
WHERE (ABSTIME_TBL.f1 - reltime '@ 3 year ago') -- -(-3) years
< abstime 'Jan 14 14:00:00 1977';
SELECT '' AS ten, ABSTIME_TBL.f1 AS abstime, RELTIME_TBL.f1 AS reltime
WHERE (ABSTIME_TBL.f1 + RELTIME_TBL.f1)
< abstime 'Jan 14 14:00:00 1971'
ORDER BY abstime, reltime;
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