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b265aa1f39
If the first transaction block in these tests were entered exactly
at midnight (California time), they'd report a bogus failure due
to 'now' and 'midnight' having the same values. Commit 8c2ac75c5
had dismissed this as being of negligible probability, but we've
now seen it happen in the buildfarm, so let's prevent it. We can
get pretty much the same test coverage without an it's-not-midnight
assumption by moving the does-'now'-work cases into their own test step.
While here, apply commit 47169c255's s/DELETE/TRUNCATE/ change to
timestamptz as well as timestamp (not sure why that didn't
occur to me at the time; the risk of failure is the same).
Back-patch to all supported branches, since the main point is
to get rid of potential buildfarm failures.
Discussion: https://postgr.es/m/14821.1577031117@sss.pgh.pa.us
243 lines
9.8 KiB
PL/PgSQL
243 lines
9.8 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, and so these
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-- related values shouldn't either.
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BEGIN;
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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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COMMIT;
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DELETE FROM TIMESTAMP_TBL;
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-- Verify that 'now' *does* change over a reasonable interval such as 100 msec,
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-- and that it doesn't change over the same interval within a transaction block
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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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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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SELECT count(d1) AS three, count(DISTINCT d1) AS two FROM TIMESTAMP_TBL;
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COMMIT;
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TRUNCATE 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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-- 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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-- Check behavior at the lower boundary of the timestamp range
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SELECT '4714-11-24 00:00:00 BC'::timestamp;
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SELECT '4714-11-23 23:59:59 BC'::timestamp; -- out of range
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-- The upper boundary differs between integer and float timestamps, so no check
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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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-- DATE_PART (timestamp_part)
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SELECT 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;
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SELECT 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;
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SELECT 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( 'isodow', d1) AS isodow, date_part( 'dow', d1) AS dow,
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date_part( 'doy', d1) AS doy
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FROM TIMESTAMP_TBL;
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SELECT d1 as "timestamp",
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date_part( 'decade', d1) AS decade,
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date_part( 'century', d1) AS century,
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date_part( 'millennium', d1) AS millennium,
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round(date_part( 'julian', d1)) AS julian
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FROM TIMESTAMP_TBL;
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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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SELECT '' AS to_char_12, to_char(d, 'FF1 FF2 FF3 FF4 FF5 FF6 ff1 ff2 ff3 ff4 ff5 ff6 MS US')
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FROM (VALUES
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('2018-11-02 12:34:56'::timestamp),
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('2018-11-02 12:34:56.78'),
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('2018-11-02 12:34:56.78901'),
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('2018-11-02 12:34:56.78901234')
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) d(d);
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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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