228 lines
9.5 KiB
PL/PgSQL
228 lines
9.5 KiB
PL/PgSQL
--
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-- TIMESTAMP
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--
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CREATE TABLE TIMESTAMP_TBL (d1 timestamp(2) without time zone);
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-- Test shorthand input values
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-- We can't just "select" the results since they aren't constants; test for
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-- equality instead. We can do that by running the test inside a transaction
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-- block, within which the value of 'now' shouldn't change. We also check
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-- that 'now' *does* change over a reasonable interval such as 100 msec.
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-- NOTE: it is possible for this part of the test to fail if the transaction
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-- block is entered exactly at local midnight; then 'now' and 'today' have
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-- the same values and the counts will come out different.
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INSERT INTO TIMESTAMP_TBL VALUES ('now');
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SELECT pg_sleep(0.1);
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BEGIN;
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INSERT INTO TIMESTAMP_TBL VALUES ('now');
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INSERT INTO TIMESTAMP_TBL VALUES ('today');
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INSERT INTO TIMESTAMP_TBL VALUES ('yesterday');
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INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow');
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-- time zone should be ignored by this data type
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INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow EST');
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INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow zulu');
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SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'today';
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SELECT count(*) AS Three FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'tomorrow';
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SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'yesterday';
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SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp(2) without time zone 'now';
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COMMIT;
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DELETE FROM TIMESTAMP_TBL;
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-- verify uniform transaction time within transaction block
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BEGIN;
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INSERT INTO TIMESTAMP_TBL VALUES ('now');
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SELECT pg_sleep(0.1);
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INSERT INTO TIMESTAMP_TBL VALUES ('now');
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SELECT pg_sleep(0.1);
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SELECT count(*) AS two FROM TIMESTAMP_TBL WHERE d1 = timestamp(2) without time zone 'now';
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COMMIT;
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DELETE FROM TIMESTAMP_TBL;
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-- Special values
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INSERT INTO TIMESTAMP_TBL VALUES ('-infinity');
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INSERT INTO TIMESTAMP_TBL VALUES ('infinity');
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INSERT INTO TIMESTAMP_TBL VALUES ('epoch');
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-- Obsolete special values
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INSERT INTO TIMESTAMP_TBL VALUES ('invalid');
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INSERT INTO TIMESTAMP_TBL VALUES ('undefined');
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INSERT INTO TIMESTAMP_TBL VALUES ('current');
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-- Postgres v6.0 standard output format
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INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');
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-- Variations on Postgres v6.1 standard output format
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INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.000001 1997 PST');
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INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.999999 1997 PST');
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INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.4 1997 PST');
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INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.5 1997 PST');
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INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01.6 1997 PST');
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-- ISO 8601 format
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-01-02');
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-01-02 03:04:05');
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01-08');
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01-0800');
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01 -08:00');
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INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 -0800');
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-06-10 17:32:01 -07:00');
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INSERT INTO TIMESTAMP_TBL VALUES ('2001-09-22T18:19:20');
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-- POSIX format (note that the timezone abbrev is just decoration here)
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INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 08:14:01 GMT+8');
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INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 13:14:02 GMT-1');
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INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 12:14:03 GMT-2');
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INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 03:14:04 PST+8');
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INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 02:14:05 MST+7:00');
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-- Variations for acceptable input formats
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997 -0800');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 5:32PM 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('1997/02/10 17:32:01-0800');
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-02-10 17:32:01 PST');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb-10-1997 17:32:01 PST');
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INSERT INTO TIMESTAMP_TBL VALUES ('02-10-1997 17:32:01 PST');
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INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 PST');
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set datestyle to ymd;
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INSERT INTO TIMESTAMP_TBL VALUES ('97FEB10 5:32:01PM UTC');
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INSERT INTO TIMESTAMP_TBL VALUES ('97/02/10 17:32:01 UTC');
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reset datestyle;
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INSERT INTO TIMESTAMP_TBL VALUES ('1997.041 17:32:01 UTC');
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INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 America/New_York');
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-- this fails (even though TZ is a no-op, we still look it up)
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INSERT INTO TIMESTAMP_TBL VALUES ('19970710 173201 America/Does_not_exist');
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-- Check date conversion and date arithmetic
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INSERT INTO TIMESTAMP_TBL VALUES ('1997-06-10 18:32:01 PDT');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 10 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 11 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 12 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 13 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 14 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 15 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0097 BC');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0097');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 0597');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1097');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1697');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1797');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1897');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 2097');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 28 17:32:01 1996');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 29 17:32:01 1996');
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INSERT INTO TIMESTAMP_TBL VALUES ('Mar 01 17:32:01 1996');
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INSERT INTO TIMESTAMP_TBL VALUES ('Dec 30 17:32:01 1996');
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INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1996');
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INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 28 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 29 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Mar 01 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Dec 30 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1997');
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INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 1999');
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INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 2000');
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INSERT INTO TIMESTAMP_TBL VALUES ('Dec 31 17:32:01 2000');
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INSERT INTO TIMESTAMP_TBL VALUES ('Jan 01 17:32:01 2001');
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-- Currently unsupported syntax and ranges
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 -0097');
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INSERT INTO TIMESTAMP_TBL VALUES ('Feb 16 17:32:01 5097 BC');
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SELECT '' AS "64", d1 FROM TIMESTAMP_TBL;
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-- Demonstrate functions and operators
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SELECT '' AS "48", d1 FROM TIMESTAMP_TBL
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WHERE d1 > timestamp without time zone '1997-01-02';
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SELECT '' AS "15", d1 FROM TIMESTAMP_TBL
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WHERE d1 < timestamp without time zone '1997-01-02';
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SELECT '' AS one, d1 FROM TIMESTAMP_TBL
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WHERE d1 = timestamp without time zone '1997-01-02';
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SELECT '' AS "63", d1 FROM TIMESTAMP_TBL
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WHERE d1 != timestamp without time zone '1997-01-02';
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SELECT '' AS "16", d1 FROM TIMESTAMP_TBL
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WHERE d1 <= timestamp without time zone '1997-01-02';
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SELECT '' AS "49", d1 FROM TIMESTAMP_TBL
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WHERE d1 >= timestamp without time zone '1997-01-02';
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SELECT '' AS "54", d1 - timestamp without time zone '1997-01-02' AS diff
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FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';
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SELECT '' AS date_trunc_week, date_trunc( 'week', timestamp '2004-02-29 15:44:17.71393' ) AS week_trunc;
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-- Test casting within a BETWEEN qualifier
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SELECT '' AS "54", d1 - timestamp without time zone '1997-01-02' AS diff
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FROM TIMESTAMP_TBL
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WHERE d1 BETWEEN timestamp without time zone '1902-01-01'
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AND timestamp without time zone '2038-01-01';
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SELECT '' AS "54", d1 as "timestamp",
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date_part( 'year', d1) AS year, date_part( 'month', d1) AS month,
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date_part( 'day', d1) AS day, date_part( 'hour', d1) AS hour,
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date_part( 'minute', d1) AS minute, date_part( 'second', d1) AS second
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FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';
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SELECT '' AS "54", d1 as "timestamp",
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date_part( 'quarter', d1) AS quarter, date_part( 'msec', d1) AS msec,
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date_part( 'usec', d1) AS usec
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FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';
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SELECT '' AS "54", d1 as "timestamp",
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date_part( 'isoyear', d1) AS isoyear, date_part( 'week', d1) AS week,
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date_part( 'dow', d1) AS dow
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FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';
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-- TO_CHAR()
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SELECT '' AS to_char_1, to_char(d1, 'DAY Day day DY Dy dy MONTH Month month RM MON Mon mon')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_2, to_char(d1, 'FMDAY FMDay FMday FMMONTH FMMonth FMmonth FMRM')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_3, to_char(d1, 'Y,YYY YYYY YYY YY Y CC Q MM WW DDD DD D J')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_4, to_char(d1, 'FMY,YYY FMYYYY FMYYY FMYY FMY FMCC FMQ FMMM FMWW FMDDD FMDD FMD FMJ')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_5, to_char(d1, 'HH HH12 HH24 MI SS SSSS')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_6, to_char(d1, E'"HH:MI:SS is" HH:MI:SS "\\"text between quote marks\\""')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_7, to_char(d1, 'HH24--text--MI--text--SS')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_8, to_char(d1, 'YYYYTH YYYYth Jth')
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FROM TIMESTAMP_TBL;
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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')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_10, to_char(d1, 'IYYY IYY IY I IW IDDD ID')
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FROM TIMESTAMP_TBL;
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SELECT '' AS to_char_11, to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
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FROM TIMESTAMP_TBL;
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-- timestamp numeric fields constructor
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SELECT make_timestamp(2014,12,28,6,30,45.887);
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