--
-- DATETIME
--

-- Shorthand values
-- Not directly usable for regression testing since these are not constants.
-- So, just try to test parser and hope for the best - thomas 97/04/26

SELECT (timestamp 'today' = (timestamp 'yesterday' + interval '1 day')) as "True";
SELECT (timestamp 'today' = (timestamp 'tomorrow' - interval '1 day')) as "True";
SELECT (timestamp 'tomorrow' = (timestamp 'yesterday' + interval '2 days')) as "True";
SELECT (timestamp 'current' = 'now') as "True";
SELECT (timestamp 'now' - 'current') AS "ZeroSecs";

SET DateStyle = 'Postgres,NonEuropean';
SELECT timestamp(date '1994-01-01', time '11:00') AS "Jan_01_1994_11am";
SELECT timestamp(date '1994-01-01', time '10:00') AS "Jan_01_1994_10am";
SELECT timestamp(date '1994-01-01', time with time zone '11:00-5') AS "Jan_01_1994_8am";

CREATE TABLE TIMESTAMP_TBL ( d1 timestamp);

INSERT INTO TIMESTAMP_TBL VALUES ('current');
INSERT INTO TIMESTAMP_TBL VALUES ('today');
INSERT INTO TIMESTAMP_TBL VALUES ('yesterday');
INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow');
INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow EST');
INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow zulu');

SELECT count(*) AS one FROM TIMESTAMP_TBL WHERE d1 = timestamp 'today';
SELECT count(*) AS one FROM TIMESTAMP_TBL WHERE d1 = timestamp 'tomorrow';
SELECT count(*) AS one FROM TIMESTAMP_TBL WHERE d1 = timestamp 'yesterday';
SELECT count(*) AS one FROM TIMESTAMP_TBL WHERE d1 = timestamp 'today' + interval '1 day';
SELECT count(*) AS one FROM TIMESTAMP_TBL WHERE d1 = timestamp 'today' - interval '1 day';

SELECT count(*) AS one FROM TIMESTAMP_TBL WHERE d1 = timestamp 'now';

DELETE FROM TIMESTAMP_TBL;

-- verify uniform transaction time within transaction block
INSERT INTO TIMESTAMP_TBL VALUES ('current');
BEGIN;
INSERT INTO TIMESTAMP_TBL VALUES ('now');
SELECT count(*) AS two FROM TIMESTAMP_TBL WHERE d1 = timestamp 'now';
END;
DELETE FROM TIMESTAMP_TBL;

-- Special values
INSERT INTO TIMESTAMP_TBL VALUES ('invalid');
INSERT INTO TIMESTAMP_TBL VALUES ('-infinity');
INSERT INTO TIMESTAMP_TBL VALUES ('infinity');
INSERT INTO TIMESTAMP_TBL VALUES ('epoch');

-- Postgres v6.0 standard output format
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Invalid Abstime');
INSERT INTO TIMESTAMP_TBL VALUES ('Undefined Abstime');

-- Variations on Postgres v6.1 standard output format
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.000001 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.999999 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.4 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.5 1997 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.6 1997 PST');

-- ISO 8601 format
INSERT INTO TIMESTAMP_TBL VALUES ('1997-01-02');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-01-02 03:04:05');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01-08');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01-0800');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01 -08:00');
INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 -0800');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-06-10 17:32:01 -07:00');

-- POSIX format
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 08:14:01 GMT+8');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 13:14:02 GMT-1');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 12:14:03 GMT -2');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 03:14:04 EST+3');
INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 02:14:05 EST +2:00');

-- Variations for acceptable input formats
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997 -0800');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 5:32PM 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('1997/02/10 17:32:01-0800');
INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb-10-1997 17:32:01 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('02-10-1997 17:32:01 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 PST');
INSERT INTO TIMESTAMP_TBL VALUES ('97FEB10 5:32:01PM UTC');
INSERT INTO TIMESTAMP_TBL VALUES ('97/02/10 17:32:01 UTC');
INSERT INTO TIMESTAMP_TBL VALUES ('97.041 17:32:01 UTC');

-- Check date conversion and date arithmetic
INSERT INTO TIMESTAMP_TBL VALUES ('1997-06-10 18:32:01 PDT');

INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 11 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 12 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 13 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 14 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 15 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1997');

INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0097 BC');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0097');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0597');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1097');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1697');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1797');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1897');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 2097');

INSERT INTO TIMESTAMP_TBL VALUES ('Feb 28 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 29 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Mar 01 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 30 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1996');
INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 28 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 29 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Mar 01 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 30 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1997');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1999');
INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 2000');
INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 2000');
INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 2001');

-- Currently unsupported syntax and ranges
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 -0097');
INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 5097 BC');

SELECT '' AS "66", d1 FROM TIMESTAMP_TBL; 

-- Demonstrate functions and operators
SELECT '' AS "47", d1 FROM TIMESTAMP_TBL
   WHERE d1 > timestamp '1997-01-02' and d1 != timestamp 'current';

SELECT '' AS "15", d1 FROM TIMESTAMP_TBL
   WHERE d1 < timestamp '1997-01-02' and d1 != timestamp 'current';

SELECT '' AS one, d1 FROM TIMESTAMP_TBL
   WHERE d1 = timestamp '1997-01-02' and d1 != timestamp 'current';

SELECT '' AS "62", d1 FROM TIMESTAMP_TBL
   WHERE d1 != timestamp '1997-01-02' and d1 != timestamp 'current';

SELECT '' AS "16", d1 FROM TIMESTAMP_TBL
   WHERE d1 <= timestamp '1997-01-02' and d1 != timestamp 'current';

SELECT '' AS "48", d1 FROM TIMESTAMP_TBL
   WHERE d1 >= timestamp '1997-01-02' and d1 != timestamp 'current';

SELECT '' AS "66", d1 + interval '1 year' AS one_year FROM TIMESTAMP_TBL;

SELECT '' AS "66", d1 - interval '1 year' AS one_year FROM TIMESTAMP_TBL;

SELECT '' AS "53", d1 - timestamp '1997-01-02' AS diff
   FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';

-- Test casting within a BETWEEN qualifier
SELECT '' AS "53", d1 - timestamp '1997-01-02' AS diff
  FROM TIMESTAMP_TBL
  WHERE d1 BETWEEN timestamp '1902-01-01' AND timestamp '2038-01-01';

SELECT '' AS "53", date_part( 'year', d1) AS year, date_part( 'month', d1) AS month,
   date_part( 'day', d1) AS day, date_part( 'hour', d1) AS hour,
   date_part( 'minute', d1) AS minute, date_part( 'second', d1) AS second
   FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';

SELECT '' AS "53", date_part( 'quarter', d1) AS quarter, date_part( 'msec', d1) AS msec,
   date_part( 'usec', d1) AS usec
   FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';

-- TO_CHAR()
--
SELECT '' AS to_char_1, to_char(d1, 'DAY Day day DY Dy dy MONTH Month month RM MON Mon mon') 
   FROM TIMESTAMP_TBL;
	
SELECT '' AS to_char_2, to_char(d1, 'FMDAY FMDay FMday FMMONTH FMMonth FMmonth FMRM')
   FROM TIMESTAMP_TBL;	

SELECT '' AS to_char_3, to_char(d1, 'Y,YYY YYYY YYY YY Y CC Q MM WW DDD DD D J')
   FROM TIMESTAMP_TBL;
	
SELECT '' AS to_char_4, to_char(d1, 'FMY,YYY FMYYYY FMYYY FMYY FMY FMCC FMQ FMMM FMWW FMDDD FMDD FMD FMJ') 
   FROM TIMESTAMP_TBL;	
	
SELECT '' AS to_char_5, to_char(d1, 'HH HH12 HH24 MI SS SSSS') 
   FROM TIMESTAMP_TBL;

SELECT '' AS to_char_6, to_char(d1, '"HH:MI:SS is" HH:MI:SS "\\"text bettween quote marks\\""') 
   FROM TIMESTAMP_TBL;		
		
SELECT '' AS to_char_7, to_char(d1, 'HH24--text--MI--text--SS')
   FROM TIMESTAMP_TBL;		

SELECT '' AS to_char_8, to_char(d1, 'YYYYTH YYYYth Jth') 
   FROM TIMESTAMP_TBL;
  
SELECT '' AS to_char_9, to_char(d1, 'YYYY A.D. YYYY a.d. YYYY bc HH:MI:SS P.M. HH:MI:SS p.m. HH:MI:SS pm') 
   FROM TIMESTAMP_TBL;   

-- TO_TIMESTAMP()
--
SELECT '' AS to_timestamp_1, to_timestamp('0097/Feb/16 --> 08:14:30', 'YYYY/Mon/DD --> HH:MI:SS');
	
SELECT '' AS to_timestamp_2, to_timestamp('97/2/16 8:14:30', 'FMYYYY/FMMM/FMDD FMHH:FMMI:FMSS');

SELECT '' AS to_timestamp_3, to_timestamp('1985 January 12', 'YYYY FMMonth DD');

SELECT '' AS to_timestamp_4, to_timestamp('My birthday-> Year: 1976, Month: May, Day: 16',
                    '"My birthday-> Year" YYYY, "Month:" FMMonth, "Day:" DD');

SELECT '' AS to_timestamp_5, to_timestamp('1,582nd VIII 21', 'Y,YYYth FMRM DD');

SELECT '' AS to_timestamp_6, to_timestamp('15 "text bettween quote marks" 98 54 45', 
                    'HH "\\text bettween quote marks\\"" YY MI SS');
    
SELECT '' AS to_timestamp_7, to_timestamp('05121445482000', 'MMDDHHMISSYYYY');    

SELECT '' AS to_timestamp_8, to_timestamp('2000January09Sunday', 'YYYYFMMonthDDFMDay');

SET DateStyle TO DEFAULT;
