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-rw-r--r--src/test/regress/sql/timestamp.sql399
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diff --git a/src/test/regress/sql/timestamp.sql b/src/test/regress/sql/timestamp.sql
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+--
+-- TIMESTAMP
+--
+
+CREATE TABLE TIMESTAMP_TBL (d1 timestamp(2) without time zone);
+
+-- Test shorthand input values
+-- We can't just "select" the results since they aren't constants; test for
+-- equality instead. We can do that by running the test inside a transaction
+-- block, within which the value of 'now' shouldn't change, and so these
+-- related values shouldn't either.
+
+BEGIN;
+
+INSERT INTO TIMESTAMP_TBL VALUES ('today');
+INSERT INTO TIMESTAMP_TBL VALUES ('yesterday');
+INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow');
+-- time zone should be ignored by this data type
+INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow EST');
+INSERT INTO TIMESTAMP_TBL VALUES ('tomorrow zulu');
+
+SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'today';
+SELECT count(*) AS Three FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'tomorrow';
+SELECT count(*) AS One FROM TIMESTAMP_TBL WHERE d1 = timestamp without time zone 'yesterday';
+
+COMMIT;
+
+DELETE FROM TIMESTAMP_TBL;
+
+-- Verify that 'now' *does* change over a reasonable interval such as 100 msec,
+-- and that it doesn't change over the same interval within a transaction block
+
+INSERT INTO TIMESTAMP_TBL VALUES ('now');
+SELECT pg_sleep(0.1);
+
+BEGIN;
+INSERT INTO TIMESTAMP_TBL VALUES ('now');
+SELECT pg_sleep(0.1);
+INSERT INTO TIMESTAMP_TBL VALUES ('now');
+SELECT pg_sleep(0.1);
+SELECT count(*) AS two FROM TIMESTAMP_TBL WHERE d1 = timestamp(2) without time zone 'now';
+SELECT count(d1) AS three, count(DISTINCT d1) AS two FROM TIMESTAMP_TBL;
+COMMIT;
+
+TRUNCATE TIMESTAMP_TBL;
+
+-- Special values
+INSERT INTO TIMESTAMP_TBL VALUES ('-infinity');
+INSERT INTO TIMESTAMP_TBL VALUES ('infinity');
+INSERT INTO TIMESTAMP_TBL VALUES ('epoch');
+
+SELECT timestamp 'infinity' = timestamp '+infinity' AS t;
+
+-- Postgres v6.0 standard output format
+INSERT INTO TIMESTAMP_TBL VALUES ('Mon Feb 10 17:32:01 1997 PST');
+
+-- 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');
+INSERT INTO TIMESTAMP_TBL VALUES ('2001-09-22T18:19:20');
+
+-- POSIX format (note that the timezone abbrev is just decoration here)
+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 PST+8');
+INSERT INTO TIMESTAMP_TBL VALUES ('2000-03-15 02:14:05 MST+7:00');
+
+-- 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');
+set datestyle to ymd;
+INSERT INTO TIMESTAMP_TBL VALUES ('97FEB10 5:32:01PM UTC');
+INSERT INTO TIMESTAMP_TBL VALUES ('97/02/10 17:32:01 UTC');
+reset datestyle;
+INSERT INTO TIMESTAMP_TBL VALUES ('1997.041 17:32:01 UTC');
+INSERT INTO TIMESTAMP_TBL VALUES ('19970210 173201 America/New_York');
+-- this fails (even though TZ is a no-op, we still look it up)
+INSERT INTO TIMESTAMP_TBL VALUES ('19970710 173201 America/Does_not_exist');
+
+-- Test non-error-throwing API
+SELECT pg_input_is_valid('now', 'timestamp');
+SELECT pg_input_is_valid('garbage', 'timestamp');
+SELECT pg_input_is_valid('2001-01-01 00:00 Nehwon/Lankhmar', 'timestamp');
+SELECT * FROM pg_input_error_info('garbage', 'timestamp');
+SELECT * FROM pg_input_error_info('2001-01-01 00:00 Nehwon/Lankhmar', 'timestamp');
+
+-- 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 d1 FROM TIMESTAMP_TBL;
+
+-- Check behavior at the boundaries of the timestamp range
+SELECT '4714-11-24 00:00:00 BC'::timestamp;
+SELECT '4714-11-23 23:59:59 BC'::timestamp; -- out of range
+SELECT '294276-12-31 23:59:59'::timestamp;
+SELECT '294277-01-01 00:00:00'::timestamp; -- out of range
+
+-- Demonstrate functions and operators
+SELECT d1 FROM TIMESTAMP_TBL
+ WHERE d1 > timestamp without time zone '1997-01-02';
+
+SELECT d1 FROM TIMESTAMP_TBL
+ WHERE d1 < timestamp without time zone '1997-01-02';
+
+SELECT d1 FROM TIMESTAMP_TBL
+ WHERE d1 = timestamp without time zone '1997-01-02';
+
+SELECT d1 FROM TIMESTAMP_TBL
+ WHERE d1 != timestamp without time zone '1997-01-02';
+
+SELECT d1 FROM TIMESTAMP_TBL
+ WHERE d1 <= timestamp without time zone '1997-01-02';
+
+SELECT d1 FROM TIMESTAMP_TBL
+ WHERE d1 >= timestamp without time zone '1997-01-02';
+
+SELECT d1 - timestamp without time zone '1997-01-02' AS diff
+ FROM TIMESTAMP_TBL WHERE d1 BETWEEN '1902-01-01' AND '2038-01-01';
+
+SELECT date_trunc( 'week', timestamp '2004-02-29 15:44:17.71393' ) AS week_trunc;
+
+-- verify date_bin behaves the same as date_trunc for relevant intervals
+
+-- case 1: AD dates, origin < input
+SELECT
+ str,
+ interval,
+ date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '2001-01-01') AS equal
+FROM (
+ VALUES
+ ('week', '7 d'),
+ ('day', '1 d'),
+ ('hour', '1 h'),
+ ('minute', '1 m'),
+ ('second', '1 s'),
+ ('millisecond', '1 ms'),
+ ('microsecond', '1 us')
+) intervals (str, interval),
+(VALUES (timestamp '2020-02-29 15:44:17.71393')) ts (ts);
+
+-- case 2: BC dates, origin < input
+SELECT
+ str,
+ interval,
+ date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '2000-01-01 BC') AS equal
+FROM (
+ VALUES
+ ('week', '7 d'),
+ ('day', '1 d'),
+ ('hour', '1 h'),
+ ('minute', '1 m'),
+ ('second', '1 s'),
+ ('millisecond', '1 ms'),
+ ('microsecond', '1 us')
+) intervals (str, interval),
+(VALUES (timestamp '0055-6-10 15:44:17.71393 BC')) ts (ts);
+
+-- case 3: AD dates, origin > input
+SELECT
+ str,
+ interval,
+ date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '2020-03-02') AS equal
+FROM (
+ VALUES
+ ('week', '7 d'),
+ ('day', '1 d'),
+ ('hour', '1 h'),
+ ('minute', '1 m'),
+ ('second', '1 s'),
+ ('millisecond', '1 ms'),
+ ('microsecond', '1 us')
+) intervals (str, interval),
+(VALUES (timestamp '2020-02-29 15:44:17.71393')) ts (ts);
+
+-- case 4: BC dates, origin > input
+SELECT
+ str,
+ interval,
+ date_trunc(str, ts) = date_bin(interval::interval, ts, timestamp '0055-06-17 BC') AS equal
+FROM (
+ VALUES
+ ('week', '7 d'),
+ ('day', '1 d'),
+ ('hour', '1 h'),
+ ('minute', '1 m'),
+ ('second', '1 s'),
+ ('millisecond', '1 ms'),
+ ('microsecond', '1 us')
+) intervals (str, interval),
+(VALUES (timestamp '0055-6-10 15:44:17.71393 BC')) ts (ts);
+
+-- bin timestamps into arbitrary intervals
+SELECT
+ interval,
+ ts,
+ origin,
+ date_bin(interval::interval, ts, origin)
+FROM (
+ VALUES
+ ('15 days'),
+ ('2 hours'),
+ ('1 hour 30 minutes'),
+ ('15 minutes'),
+ ('10 seconds'),
+ ('100 milliseconds'),
+ ('250 microseconds')
+) intervals (interval),
+(VALUES (timestamp '2020-02-11 15:44:17.71393')) ts (ts),
+(VALUES (timestamp '2001-01-01')) origin (origin);
+
+-- shift bins using the origin parameter:
+SELECT date_bin('5 min'::interval, timestamp '2020-02-01 01:01:01', timestamp '2020-02-01 00:02:30');
+
+-- disallow intervals with months or years
+SELECT date_bin('5 months'::interval, timestamp '2020-02-01 01:01:01', timestamp '2001-01-01');
+SELECT date_bin('5 years'::interval, timestamp '2020-02-01 01:01:01', timestamp '2001-01-01');
+
+-- disallow zero intervals
+SELECT date_bin('0 days'::interval, timestamp '1970-01-01 01:00:00' , timestamp '1970-01-01 00:00:00');
+
+-- disallow negative intervals
+SELECT date_bin('-2 days'::interval, timestamp '1970-01-01 01:00:00' , timestamp '1970-01-01 00:00:00');
+
+-- Test casting within a BETWEEN qualifier
+SELECT d1 - timestamp without time zone '1997-01-02' AS diff
+ FROM TIMESTAMP_TBL
+ WHERE d1 BETWEEN timestamp without time zone '1902-01-01'
+ AND timestamp without time zone '2038-01-01';
+
+-- DATE_PART (timestamp_part)
+SELECT d1 as "timestamp",
+ 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;
+
+SELECT d1 as "timestamp",
+ date_part( 'quarter', d1) AS quarter, date_part( 'msec', d1) AS msec,
+ date_part( 'usec', d1) AS usec
+ FROM TIMESTAMP_TBL;
+
+SELECT d1 as "timestamp",
+ date_part( 'isoyear', d1) AS isoyear, date_part( 'week', d1) AS week,
+ date_part( 'isodow', d1) AS isodow, date_part( 'dow', d1) AS dow,
+ date_part( 'doy', d1) AS doy
+ FROM TIMESTAMP_TBL;
+
+SELECT d1 as "timestamp",
+ date_part( 'decade', d1) AS decade,
+ date_part( 'century', d1) AS century,
+ date_part( 'millennium', d1) AS millennium,
+ round(date_part( 'julian', d1)) AS julian,
+ date_part( 'epoch', d1) AS epoch
+ FROM TIMESTAMP_TBL;
+
+-- extract implementation is mostly the same as date_part, so only
+-- test a few cases for additional coverage.
+SELECT d1 as "timestamp",
+ extract(microseconds from d1) AS microseconds,
+ extract(milliseconds from d1) AS milliseconds,
+ extract(seconds from d1) AS seconds,
+ round(extract(julian from d1)) AS julian,
+ extract(epoch from d1) AS epoch
+ FROM TIMESTAMP_TBL;
+
+-- value near upper bound uses special case in code
+SELECT date_part('epoch', '294270-01-01 00:00:00'::timestamp);
+SELECT extract(epoch from '294270-01-01 00:00:00'::timestamp);
+-- another internal overflow test case
+SELECT extract(epoch from '5000-01-01 00:00:00'::timestamp);
+
+-- test edge-case overflow in timestamp subtraction
+SELECT timestamp '294276-12-31 23:59:59' - timestamp '1999-12-23 19:59:04.224193' AS ok;
+SELECT timestamp '294276-12-31 23:59:59' - timestamp '1999-12-23 19:59:04.224192' AS overflows;
+
+-- TO_CHAR()
+SELECT to_char(d1, 'DAY Day day DY Dy dy MONTH Month month RM MON Mon mon')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, 'FMDAY FMDay FMday FMMONTH FMMonth FMmonth FMRM')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, 'Y,YYY YYYY YYY YY Y CC Q MM WW DDD DD D J')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, 'FMY,YYY FMYYYY FMYYY FMYY FMY FMCC FMQ FMMM FMWW FMDDD FMDD FMD FMJ')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, 'HH HH12 HH24 MI SS SSSS')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, E'"HH:MI:SS is" HH:MI:SS "\\"text between quote marks\\""')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, 'HH24--text--MI--text--SS')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, 'YYYYTH YYYYth Jth')
+ FROM TIMESTAMP_TBL;
+
+SELECT 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;
+
+SELECT to_char(d1, 'IYYY IYY IY I IW IDDD ID')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d1, 'FMIYYY FMIYY FMIY FMI FMIW FMIDDD FMID')
+ FROM TIMESTAMP_TBL;
+
+SELECT to_char(d, 'FF1 FF2 FF3 FF4 FF5 FF6 ff1 ff2 ff3 ff4 ff5 ff6 MS US')
+ FROM (VALUES
+ ('2018-11-02 12:34:56'::timestamp),
+ ('2018-11-02 12:34:56.78'),
+ ('2018-11-02 12:34:56.78901'),
+ ('2018-11-02 12:34:56.78901234')
+ ) d(d);
+
+-- Roman months, with upper and lower case.
+SELECT i,
+ to_char(i * interval '1mon', 'rm'),
+ to_char(i * interval '1mon', 'RM')
+ FROM generate_series(-13, 13) i;
+
+-- timestamp numeric fields constructor
+SELECT make_timestamp(2014, 12, 28, 6, 30, 45.887);
+SELECT make_timestamp(-44, 3, 15, 12, 30, 15);
+-- should fail
+select make_timestamp(0, 7, 15, 12, 30, 15);
+
+-- generate_series for timestamp
+select * from generate_series('2020-01-01 00:00'::timestamp,
+ '2020-01-02 03:00'::timestamp,
+ '1 hour'::interval);
+-- the LIMIT should allow this to terminate in a reasonable amount of time
+-- (but that unfortunately doesn't work yet for SELECT * FROM ...)
+select generate_series('2022-01-01 00:00'::timestamp,
+ 'infinity'::timestamp,
+ '1 month'::interval) limit 10;
+-- errors
+select * from generate_series('2020-01-01 00:00'::timestamp,
+ '2020-01-02 03:00'::timestamp,
+ '0 hour'::interval);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 05:14:27 +0000