279 lines
11 KiB
SQL
279 lines
11 KiB
SQL
--
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-- INTERVAL
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--
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SET DATESTYLE = 'ISO';
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SET IntervalStyle to postgres;
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-- check acceptance of "time zone style"
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SELECT INTERVAL '01:00' AS "One hour";
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SELECT INTERVAL '+02:00' AS "Two hours";
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SELECT INTERVAL '-08:00' AS "Eight hours";
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SELECT INTERVAL '-1 +02:03' AS "22 hours ago...";
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SELECT INTERVAL '-1 days +02:03' AS "22 hours ago...";
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SELECT INTERVAL '1.5 weeks' AS "Ten days twelve hours";
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SELECT INTERVAL '1.5 months' AS "One month 15 days";
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SELECT INTERVAL '10 years -11 month -12 days +13:14' AS "9 years...";
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CREATE TABLE INTERVAL_TBL (f1 interval);
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INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 1 minute');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 5 hour');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 10 day');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 34 year');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 3 months');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 14 seconds ago');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('1 day 2 hours 3 minutes 4 seconds');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('6 years');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('5 months');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('5 months 12 hours');
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-- badly formatted interval
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INSERT INTO INTERVAL_TBL (f1) VALUES ('badly formatted interval');
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INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 30 eons ago');
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-- test interval operators
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SELECT '' AS ten, * FROM INTERVAL_TBL;
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SELECT '' AS nine, * FROM INTERVAL_TBL
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WHERE INTERVAL_TBL.f1 <> interval '@ 10 days';
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SELECT '' AS three, * FROM INTERVAL_TBL
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WHERE INTERVAL_TBL.f1 <= interval '@ 5 hours';
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SELECT '' AS three, * FROM INTERVAL_TBL
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WHERE INTERVAL_TBL.f1 < interval '@ 1 day';
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SELECT '' AS one, * FROM INTERVAL_TBL
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WHERE INTERVAL_TBL.f1 = interval '@ 34 years';
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SELECT '' AS five, * FROM INTERVAL_TBL
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WHERE INTERVAL_TBL.f1 >= interval '@ 1 month';
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SELECT '' AS nine, * FROM INTERVAL_TBL
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WHERE INTERVAL_TBL.f1 > interval '@ 3 seconds ago';
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SELECT '' AS fortyfive, r1.*, r2.*
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FROM INTERVAL_TBL r1, INTERVAL_TBL r2
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WHERE r1.f1 > r2.f1
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ORDER BY r1.f1, r2.f1;
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-- Test multiplication and division with intervals.
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-- Floating point arithmetic rounding errors can lead to unexpected results,
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-- though the code attempts to do the right thing and round up to days and
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-- minutes to avoid results such as '3 days 24:00 hours' or '14:20:60'.
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-- Note that it is expected for some day components to be greater than 29 and
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-- some time components be greater than 23:59:59 due to how intervals are
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-- stored internally.
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CREATE TABLE INTERVAL_MULDIV_TBL (span interval);
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COPY INTERVAL_MULDIV_TBL FROM STDIN;
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41 mon 12 days 360:00
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-41 mon -12 days +360:00
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-12 days
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9 mon -27 days 12:34:56
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-3 years 482 days 76:54:32.189
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4 mon
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14 mon
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999 mon 999 days
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\.
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SELECT span * 0.3 AS product
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FROM INTERVAL_MULDIV_TBL;
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SELECT span * 8.2 AS product
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FROM INTERVAL_MULDIV_TBL;
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SELECT span / 10 AS quotient
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FROM INTERVAL_MULDIV_TBL;
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SELECT span / 100 AS quotient
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FROM INTERVAL_MULDIV_TBL;
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DROP TABLE INTERVAL_MULDIV_TBL;
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SET DATESTYLE = 'postgres';
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SET IntervalStyle to postgres_verbose;
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SELECT '' AS ten, * FROM INTERVAL_TBL;
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-- test avg(interval), which is somewhat fragile since people have been
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-- known to change the allowed input syntax for type interval without
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-- updating pg_aggregate.agginitval
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select avg(f1) from interval_tbl;
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-- test long interval input
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select '4 millenniums 5 centuries 4 decades 1 year 4 months 4 days 17 minutes 31 seconds'::interval;
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-- test long interval output
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-- Note: the actual maximum length of the interval output is longer,
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-- but we need the test to work for both integer and floating-point
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-- timestamps.
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select '100000000y 10mon -1000000000d -100000h -10min -10.000001s ago'::interval;
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-- test justify_hours() and justify_days()
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SELECT justify_hours(interval '6 months 3 days 52 hours 3 minutes 2 seconds') as "6 mons 5 days 4 hours 3 mins 2 seconds";
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SELECT justify_days(interval '6 months 36 days 5 hours 4 minutes 3 seconds') as "7 mons 6 days 5 hours 4 mins 3 seconds";
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-- test justify_interval()
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SELECT justify_interval(interval '1 month -1 hour') as "1 month -1 hour";
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-- test fractional second input, and detection of duplicate units
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SET DATESTYLE = 'ISO';
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SET IntervalStyle TO postgres;
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SELECT '1 millisecond'::interval, '1 microsecond'::interval,
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'500 seconds 99 milliseconds 51 microseconds'::interval;
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SELECT '3 days 5 milliseconds'::interval;
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SELECT '1 second 2 seconds'::interval; -- error
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SELECT '10 milliseconds 20 milliseconds'::interval; -- error
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SELECT '5.5 seconds 3 milliseconds'::interval; -- error
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SELECT '1:20:05 5 microseconds'::interval; -- error
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SELECT '1 day 1 day'::interval; -- error
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SELECT interval '1-2'; -- SQL year-month literal
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SELECT interval '999' second; -- oversize leading field is ok
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SELECT interval '999' minute;
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SELECT interval '999' hour;
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SELECT interval '999' day;
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SELECT interval '999' month;
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-- test SQL-spec syntaxes for restricted field sets
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SELECT interval '1' year;
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SELECT interval '2' month;
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SELECT interval '3' day;
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SELECT interval '4' hour;
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SELECT interval '5' minute;
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SELECT interval '6' second;
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SELECT interval '1' year to month;
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SELECT interval '1-2' year to month;
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SELECT interval '1 2' day to hour;
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SELECT interval '1 2:03' day to hour;
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SELECT interval '1 2:03:04' day to hour;
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SELECT interval '1 2' day to minute;
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SELECT interval '1 2:03' day to minute;
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SELECT interval '1 2:03:04' day to minute;
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SELECT interval '1 2' day to second;
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SELECT interval '1 2:03' day to second;
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SELECT interval '1 2:03:04' day to second;
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SELECT interval '1 2' hour to minute;
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SELECT interval '1 2:03' hour to minute;
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SELECT interval '1 2:03:04' hour to minute;
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SELECT interval '1 2' hour to second;
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SELECT interval '1 2:03' hour to second;
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SELECT interval '1 2:03:04' hour to second;
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SELECT interval '1 2' minute to second;
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SELECT interval '1 2:03' minute to second;
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SELECT interval '1 2:03:04' minute to second;
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SELECT interval '1 +2:03' minute to second;
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SELECT interval '1 +2:03:04' minute to second;
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SELECT interval '1 -2:03' minute to second;
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SELECT interval '1 -2:03:04' minute to second;
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SELECT interval '123 11' day to hour; -- ok
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SELECT interval '123 11' day; -- not ok
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SELECT interval '123 11'; -- not ok, too ambiguous
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SELECT interval '123 2:03 -2:04'; -- not ok, redundant hh:mm fields
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-- test syntaxes for restricted precision
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SELECT interval(0) '1 day 01:23:45.6789';
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SELECT interval(2) '1 day 01:23:45.6789';
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SELECT interval '12:34.5678' minute to second(2); -- per SQL spec
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SELECT interval '1.234' second;
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SELECT interval '1.234' second(2);
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SELECT interval '1 2.345' day to second(2);
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SELECT interval '1 2:03' day to second(2);
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SELECT interval '1 2:03.4567' day to second(2);
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SELECT interval '1 2:03:04.5678' day to second(2);
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SELECT interval '1 2.345' hour to second(2);
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SELECT interval '1 2:03.45678' hour to second(2);
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SELECT interval '1 2:03:04.5678' hour to second(2);
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SELECT interval '1 2.3456' minute to second(2);
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SELECT interval '1 2:03.5678' minute to second(2);
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SELECT interval '1 2:03:04.5678' minute to second(2);
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-- test inputting and outputting SQL standard interval literals
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SET IntervalStyle TO sql_standard;
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SELECT interval '0' AS "zero",
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interval '1-2' year to month AS "year-month",
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interval '1 2:03:04' day to second AS "day-time",
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- interval '1-2' AS "negative year-month",
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- interval '1 2:03:04' AS "negative day-time";
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-- test input of some not-quite-standard interval values in the sql style
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SET IntervalStyle TO postgres;
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SELECT interval '+1 -1:00:00',
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interval '-1 +1:00:00',
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interval '+1-2 -3 +4:05:06.789',
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interval '-1-2 +3 -4:05:06.789';
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-- test output of couple non-standard interval values in the sql style
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SET IntervalStyle TO sql_standard;
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SELECT interval '1 day -1 hours',
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interval '-1 days +1 hours',
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interval '1 years 2 months -3 days 4 hours 5 minutes 6.789 seconds',
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- interval '1 years 2 months -3 days 4 hours 5 minutes 6.789 seconds';
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-- test outputting iso8601 intervals
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SET IntervalStyle to iso_8601;
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select interval '0' AS "zero",
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interval '1-2' AS "a year 2 months",
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interval '1 2:03:04' AS "a bit over a day",
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interval '2:03:04.45679' AS "a bit over 2 hours",
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(interval '1-2' + interval '3 4:05:06.7') AS "all fields",
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(interval '1-2' - interval '3 4:05:06.7') AS "mixed sign",
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(- interval '1-2' + interval '3 4:05:06.7') AS "negative";
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-- test inputting ISO 8601 4.4.2.1 "Format With Time Unit Designators"
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SET IntervalStyle to sql_standard;
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select interval 'P0Y' AS "zero",
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interval 'P1Y2M' AS "a year 2 months",
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interval 'P1W' AS "a week",
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interval 'P1DT2H3M4S' AS "a bit over a day",
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interval 'P1Y2M3DT4H5M6.7S' AS "all fields",
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interval 'P-1Y-2M-3DT-4H-5M-6.7S' AS "negative",
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interval 'PT-0.1S' AS "fractional second";
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-- test inputting ISO 8601 4.4.2.2 "Alternative Format"
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SET IntervalStyle to postgres;
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select interval 'P00021015T103020' AS "ISO8601 Basic Format",
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interval 'P0002-10-15T10:30:20' AS "ISO8601 Extended Format";
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-- Make sure optional ISO8601 alternative format fields are optional.
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select interval 'P0002' AS "year only",
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interval 'P0002-10' AS "year month",
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interval 'P0002-10-15' AS "year month day",
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interval 'P0002T1S' AS "year only plus time",
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interval 'P0002-10T1S' AS "year month plus time",
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interval 'P0002-10-15T1S' AS "year month day plus time",
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interval 'PT10' AS "hour only",
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interval 'PT10:30' AS "hour minute";
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-- test a couple rounding cases that changed since 8.3 w/ HAVE_INT64_TIMESTAMP.
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SET IntervalStyle to postgres_verbose;
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select interval '-10 mons -3 days +03:55:06.70';
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select interval '1 year 2 mons 3 days 04:05:06.699999';
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select interval '0:0:0.7', interval '@ 0.70 secs', interval '0.7 seconds';
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-- check that '30 days' equals '1 month' according to the hash function
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select '30 days'::interval = '1 month'::interval as t;
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select interval_hash('30 days'::interval) = interval_hash('1 month'::interval) as t;
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-- numeric constructor
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select make_interval(years := 2);
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select make_interval(years := 1, months := 6);
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select make_interval(years := 1, months := -1, weeks := 5, days := -7, hours := 25, mins := -180);
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select make_interval() = make_interval(years := 0, months := 0, weeks := 0, days := 0, mins := 0, secs := 0.0);
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select make_interval(hours := -2, mins := -10, secs := -25.3);
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select make_interval(years := 'inf'::float::int);
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select make_interval(months := 'NaN'::float::int);
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select make_interval(secs := 'inf');
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select make_interval(secs := 'NaN');
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select make_interval(secs := 7e12);
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