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| -rw-r--r-- | src/test/regress/expected/interval.out | 932 |
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diff --git a/src/test/regress/expected/interval.out b/src/test/regress/expected/interval.out new file mode 100644 index 0000000..f772909 --- /dev/null +++ b/src/test/regress/expected/interval.out @@ -0,0 +1,932 @@ +-- +-- INTERVAL +-- +SET DATESTYLE = 'ISO'; +SET IntervalStyle to postgres; +-- check acceptance of "time zone style" +SELECT INTERVAL '01:00' AS "One hour"; + One hour +---------- + 01:00:00 +(1 row) + +SELECT INTERVAL '+02:00' AS "Two hours"; + Two hours +----------- + 02:00:00 +(1 row) + +SELECT INTERVAL '-08:00' AS "Eight hours"; + Eight hours +------------- + -08:00:00 +(1 row) + +SELECT INTERVAL '-1 +02:03' AS "22 hours ago..."; + 22 hours ago... +------------------- + -1 days +02:03:00 +(1 row) + +SELECT INTERVAL '-1 days +02:03' AS "22 hours ago..."; + 22 hours ago... +------------------- + -1 days +02:03:00 +(1 row) + +SELECT INTERVAL '1.5 weeks' AS "Ten days twelve hours"; + Ten days twelve hours +----------------------- + 10 days 12:00:00 +(1 row) + +SELECT INTERVAL '1.5 months' AS "One month 15 days"; + One month 15 days +------------------- + 1 mon 15 days +(1 row) + +SELECT INTERVAL '10 years -11 month -12 days +13:14' AS "9 years..."; + 9 years... +---------------------------------- + 9 years 1 mon -12 days +13:14:00 +(1 row) + +CREATE TABLE INTERVAL_TBL (f1 interval); +INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 1 minute'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 5 hour'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 10 day'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 34 year'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 3 months'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 14 seconds ago'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('1 day 2 hours 3 minutes 4 seconds'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('6 years'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('5 months'); +INSERT INTO INTERVAL_TBL (f1) VALUES ('5 months 12 hours'); +-- badly formatted interval +INSERT INTO INTERVAL_TBL (f1) VALUES ('badly formatted interval'); +ERROR: invalid input syntax for type interval: "badly formatted interval" +LINE 1: INSERT INTO INTERVAL_TBL (f1) VALUES ('badly formatted inter... + ^ +INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 30 eons ago'); +ERROR: invalid input syntax for type interval: "@ 30 eons ago" +LINE 1: INSERT INTO INTERVAL_TBL (f1) VALUES ('@ 30 eons ago'); + ^ +-- test interval operators +SELECT '' AS ten, * FROM INTERVAL_TBL; + ten | f1 +-----+----------------- + | 00:01:00 + | 05:00:00 + | 10 days + | 34 years + | 3 mons + | -00:00:14 + | 1 day 02:03:04 + | 6 years + | 5 mons + | 5 mons 12:00:00 +(10 rows) + +SELECT '' AS nine, * FROM INTERVAL_TBL + WHERE INTERVAL_TBL.f1 <> interval '@ 10 days'; + nine | f1 +------+----------------- + | 00:01:00 + | 05:00:00 + | 34 years + | 3 mons + | -00:00:14 + | 1 day 02:03:04 + | 6 years + | 5 mons + | 5 mons 12:00:00 +(9 rows) + +SELECT '' AS three, * FROM INTERVAL_TBL + WHERE INTERVAL_TBL.f1 <= interval '@ 5 hours'; + three | f1 +-------+----------- + | 00:01:00 + | 05:00:00 + | -00:00:14 +(3 rows) + +SELECT '' AS three, * FROM INTERVAL_TBL + WHERE INTERVAL_TBL.f1 < interval '@ 1 day'; + three | f1 +-------+----------- + | 00:01:00 + | 05:00:00 + | -00:00:14 +(3 rows) + +SELECT '' AS one, * FROM INTERVAL_TBL + WHERE INTERVAL_TBL.f1 = interval '@ 34 years'; + one | f1 +-----+---------- + | 34 years +(1 row) + +SELECT '' AS five, * FROM INTERVAL_TBL + WHERE INTERVAL_TBL.f1 >= interval '@ 1 month'; + five | f1 +------+----------------- + | 34 years + | 3 mons + | 6 years + | 5 mons + | 5 mons 12:00:00 +(5 rows) + +SELECT '' AS nine, * FROM INTERVAL_TBL + WHERE INTERVAL_TBL.f1 > interval '@ 3 seconds ago'; + nine | f1 +------+----------------- + | 00:01:00 + | 05:00:00 + | 10 days + | 34 years + | 3 mons + | 1 day 02:03:04 + | 6 years + | 5 mons + | 5 mons 12:00:00 +(9 rows) + +SELECT '' AS fortyfive, r1.*, r2.* + FROM INTERVAL_TBL r1, INTERVAL_TBL r2 + WHERE r1.f1 > r2.f1 + ORDER BY r1.f1, r2.f1; + fortyfive | f1 | f1 +-----------+-----------------+----------------- + | 00:01:00 | -00:00:14 + | 05:00:00 | -00:00:14 + | 05:00:00 | 00:01:00 + | 1 day 02:03:04 | -00:00:14 + | 1 day 02:03:04 | 00:01:00 + | 1 day 02:03:04 | 05:00:00 + | 10 days | -00:00:14 + | 10 days | 00:01:00 + | 10 days | 05:00:00 + | 10 days | 1 day 02:03:04 + | 3 mons | -00:00:14 + | 3 mons | 00:01:00 + | 3 mons | 05:00:00 + | 3 mons | 1 day 02:03:04 + | 3 mons | 10 days + | 5 mons | -00:00:14 + | 5 mons | 00:01:00 + | 5 mons | 05:00:00 + | 5 mons | 1 day 02:03:04 + | 5 mons | 10 days + | 5 mons | 3 mons + | 5 mons 12:00:00 | -00:00:14 + | 5 mons 12:00:00 | 00:01:00 + | 5 mons 12:00:00 | 05:00:00 + | 5 mons 12:00:00 | 1 day 02:03:04 + | 5 mons 12:00:00 | 10 days + | 5 mons 12:00:00 | 3 mons + | 5 mons 12:00:00 | 5 mons + | 6 years | -00:00:14 + | 6 years | 00:01:00 + | 6 years | 05:00:00 + | 6 years | 1 day 02:03:04 + | 6 years | 10 days + | 6 years | 3 mons + | 6 years | 5 mons + | 6 years | 5 mons 12:00:00 + | 34 years | -00:00:14 + | 34 years | 00:01:00 + | 34 years | 05:00:00 + | 34 years | 1 day 02:03:04 + | 34 years | 10 days + | 34 years | 3 mons + | 34 years | 5 mons + | 34 years | 5 mons 12:00:00 + | 34 years | 6 years +(45 rows) + +-- Test intervals that are large enough to overflow 64 bits in comparisons +CREATE TEMP TABLE INTERVAL_TBL_OF (f1 interval); +INSERT INTO INTERVAL_TBL_OF (f1) VALUES + ('2147483647 days 2147483647 months'), + ('2147483647 days -2147483648 months'), + ('1 year'), + ('-2147483648 days 2147483647 months'), + ('-2147483648 days -2147483648 months'); +-- these should fail as out-of-range +INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('2147483648 days'); +ERROR: interval field value out of range: "2147483648 days" +LINE 1: INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('2147483648 days'); + ^ +INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('-2147483649 days'); +ERROR: interval field value out of range: "-2147483649 days" +LINE 1: INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('-2147483649 days')... + ^ +INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('2147483647 years'); +ERROR: interval out of range +LINE 1: INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('2147483647 years')... + ^ +INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('-2147483648 years'); +ERROR: interval out of range +LINE 1: INSERT INTO INTERVAL_TBL_OF (f1) VALUES ('-2147483648 years'... + ^ +-- Test edge-case overflow detection in interval multiplication +select extract(epoch from '256 microseconds'::interval * (2^55)::float8); +ERROR: interval out of range +SELECT r1.*, r2.* + FROM INTERVAL_TBL_OF r1, INTERVAL_TBL_OF r2 + WHERE r1.f1 > r2.f1 + ORDER BY r1.f1, r2.f1; + f1 | f1 +-------------------------------------------+------------------------------------------- + -178956970 years -8 mons +2147483647 days | -178956970 years -8 mons -2147483648 days + 1 year | -178956970 years -8 mons -2147483648 days + 1 year | -178956970 years -8 mons +2147483647 days + 178956970 years 7 mons -2147483648 days | -178956970 years -8 mons -2147483648 days + 178956970 years 7 mons -2147483648 days | -178956970 years -8 mons +2147483647 days + 178956970 years 7 mons -2147483648 days | 1 year + 178956970 years 7 mons 2147483647 days | -178956970 years -8 mons -2147483648 days + 178956970 years 7 mons 2147483647 days | -178956970 years -8 mons +2147483647 days + 178956970 years 7 mons 2147483647 days | 1 year + 178956970 years 7 mons 2147483647 days | 178956970 years 7 mons -2147483648 days +(10 rows) + +CREATE INDEX ON INTERVAL_TBL_OF USING btree (f1); +SET enable_seqscan TO false; +EXPLAIN (COSTS OFF) +SELECT f1 FROM INTERVAL_TBL_OF r1 ORDER BY f1; + QUERY PLAN +-------------------------------------------------------------------- + Index Only Scan using interval_tbl_of_f1_idx on interval_tbl_of r1 +(1 row) + +SELECT f1 FROM INTERVAL_TBL_OF r1 ORDER BY f1; + f1 +------------------------------------------- + -178956970 years -8 mons -2147483648 days + -178956970 years -8 mons +2147483647 days + 1 year + 178956970 years 7 mons -2147483648 days + 178956970 years 7 mons 2147483647 days +(5 rows) + +RESET enable_seqscan; +DROP TABLE INTERVAL_TBL_OF; +-- Test multiplication and division with intervals. +-- Floating point arithmetic rounding errors can lead to unexpected results, +-- though the code attempts to do the right thing and round up to days and +-- minutes to avoid results such as '3 days 24:00 hours' or '14:20:60'. +-- Note that it is expected for some day components to be greater than 29 and +-- some time components be greater than 23:59:59 due to how intervals are +-- stored internally. +CREATE TABLE INTERVAL_MULDIV_TBL (span interval); +COPY INTERVAL_MULDIV_TBL FROM STDIN; +SELECT span * 0.3 AS product +FROM INTERVAL_MULDIV_TBL; + product +------------------------------------ + 1 year 12 days 122:24:00 + -1 years -12 days +93:36:00 + -3 days -14:24:00 + 2 mons 13 days 01:22:28.8 + -10 mons +120 days 37:28:21.6567 + 1 mon 6 days + 4 mons 6 days + 24 years 11 mons 320 days 16:48:00 +(8 rows) + +SELECT span * 8.2 AS product +FROM INTERVAL_MULDIV_TBL; + product +--------------------------------------------- + 28 years 104 days 2961:36:00 + -28 years -104 days +2942:24:00 + -98 days -09:36:00 + 6 years 1 mon -197 days +93:34:27.2 + -24 years -7 mons +3946 days 640:15:11.9498 + 2 years 8 mons 24 days + 9 years 6 mons 24 days + 682 years 7 mons 8215 days 19:12:00 +(8 rows) + +SELECT span / 10 AS quotient +FROM INTERVAL_MULDIV_TBL; + quotient +---------------------------------- + 4 mons 4 days 40:48:00 + -4 mons -4 days +31:12:00 + -1 days -04:48:00 + 25 days -15:32:30.4 + -3 mons +30 days 12:29:27.2189 + 12 days + 1 mon 12 days + 8 years 3 mons 126 days 21:36:00 +(8 rows) + +SELECT span / 100 AS quotient +FROM INTERVAL_MULDIV_TBL; + quotient +------------------------- + 12 days 13:40:48 + -12 days -06:28:48 + -02:52:48 + 2 days 10:26:44.96 + -6 days +01:14:56.72189 + 1 day 04:48:00 + 4 days 04:48:00 + 9 mons 39 days 16:33:36 +(8 rows) + +DROP TABLE INTERVAL_MULDIV_TBL; +SET DATESTYLE = 'postgres'; +SET IntervalStyle to postgres_verbose; +SELECT '' AS ten, * FROM INTERVAL_TBL; + ten | f1 +-----+------------------------------- + | @ 1 min + | @ 5 hours + | @ 10 days + | @ 34 years + | @ 3 mons + | @ 14 secs ago + | @ 1 day 2 hours 3 mins 4 secs + | @ 6 years + | @ 5 mons + | @ 5 mons 12 hours +(10 rows) + +-- test avg(interval), which is somewhat fragile since people have been +-- known to change the allowed input syntax for type interval without +-- updating pg_aggregate.agginitval +select avg(f1) from interval_tbl; + avg +------------------------------------------------- + @ 4 years 1 mon 10 days 4 hours 18 mins 23 secs +(1 row) + +-- test long interval input +select '4 millenniums 5 centuries 4 decades 1 year 4 months 4 days 17 minutes 31 seconds'::interval; + interval +-------------------------------------------- + @ 4541 years 4 mons 4 days 17 mins 31 secs +(1 row) + +-- test long interval output +-- Note: the actual maximum length of the interval output is longer, +-- but we need the test to work for both integer and floating-point +-- timestamps. +select '100000000y 10mon -1000000000d -100000h -10min -10.000001s ago'::interval; + interval +--------------------------------------------------------------------------------------- + @ 100000000 years 10 mons -1000000000 days -100000 hours -10 mins -10.000001 secs ago +(1 row) + +-- test justify_hours() and justify_days() +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"; + 6 mons 5 days 4 hours 3 mins 2 seconds +---------------------------------------- + @ 6 mons 5 days 4 hours 3 mins 2 secs +(1 row) + +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"; + 7 mons 6 days 5 hours 4 mins 3 seconds +---------------------------------------- + @ 7 mons 6 days 5 hours 4 mins 3 secs +(1 row) + +-- test justify_interval() +SELECT justify_interval(interval '1 month -1 hour') as "1 month -1 hour"; + 1 month -1 hour +-------------------- + @ 29 days 23 hours +(1 row) + +-- test fractional second input, and detection of duplicate units +SET DATESTYLE = 'ISO'; +SET IntervalStyle TO postgres; +SELECT '1 millisecond'::interval, '1 microsecond'::interval, + '500 seconds 99 milliseconds 51 microseconds'::interval; + interval | interval | interval +--------------+-----------------+----------------- + 00:00:00.001 | 00:00:00.000001 | 00:08:20.099051 +(1 row) + +SELECT '3 days 5 milliseconds'::interval; + interval +--------------------- + 3 days 00:00:00.005 +(1 row) + +SELECT '1 second 2 seconds'::interval; -- error +ERROR: invalid input syntax for type interval: "1 second 2 seconds" +LINE 1: SELECT '1 second 2 seconds'::interval; + ^ +SELECT '10 milliseconds 20 milliseconds'::interval; -- error +ERROR: invalid input syntax for type interval: "10 milliseconds 20 milliseconds" +LINE 1: SELECT '10 milliseconds 20 milliseconds'::interval; + ^ +SELECT '5.5 seconds 3 milliseconds'::interval; -- error +ERROR: invalid input syntax for type interval: "5.5 seconds 3 milliseconds" +LINE 1: SELECT '5.5 seconds 3 milliseconds'::interval; + ^ +SELECT '1:20:05 5 microseconds'::interval; -- error +ERROR: invalid input syntax for type interval: "1:20:05 5 microseconds" +LINE 1: SELECT '1:20:05 5 microseconds'::interval; + ^ +SELECT '1 day 1 day'::interval; -- error +ERROR: invalid input syntax for type interval: "1 day 1 day" +LINE 1: SELECT '1 day 1 day'::interval; + ^ +SELECT interval '1-2'; -- SQL year-month literal + interval +--------------- + 1 year 2 mons +(1 row) + +SELECT interval '999' second; -- oversize leading field is ok + interval +---------- + 00:16:39 +(1 row) + +SELECT interval '999' minute; + interval +---------- + 16:39:00 +(1 row) + +SELECT interval '999' hour; + interval +----------- + 999:00:00 +(1 row) + +SELECT interval '999' day; + interval +---------- + 999 days +(1 row) + +SELECT interval '999' month; + interval +----------------- + 83 years 3 mons +(1 row) + +-- test SQL-spec syntaxes for restricted field sets +SELECT interval '1' year; + interval +---------- + 1 year +(1 row) + +SELECT interval '2' month; + interval +---------- + 2 mons +(1 row) + +SELECT interval '3' day; + interval +---------- + 3 days +(1 row) + +SELECT interval '4' hour; + interval +---------- + 04:00:00 +(1 row) + +SELECT interval '5' minute; + interval +---------- + 00:05:00 +(1 row) + +SELECT interval '6' second; + interval +---------- + 00:00:06 +(1 row) + +SELECT interval '1' year to month; + interval +---------- + 1 mon +(1 row) + +SELECT interval '1-2' year to month; + interval +--------------- + 1 year 2 mons +(1 row) + +SELECT interval '1 2' day to hour; + interval +---------------- + 1 day 02:00:00 +(1 row) + +SELECT interval '1 2:03' day to hour; + interval +---------------- + 1 day 02:00:00 +(1 row) + +SELECT interval '1 2:03:04' day to hour; + interval +---------------- + 1 day 02:00:00 +(1 row) + +SELECT interval '1 2' day to minute; +ERROR: invalid input syntax for type interval: "1 2" +LINE 1: SELECT interval '1 2' day to minute; + ^ +SELECT interval '1 2:03' day to minute; + interval +---------------- + 1 day 02:03:00 +(1 row) + +SELECT interval '1 2:03:04' day to minute; + interval +---------------- + 1 day 02:03:00 +(1 row) + +SELECT interval '1 2' day to second; +ERROR: invalid input syntax for type interval: "1 2" +LINE 1: SELECT interval '1 2' day to second; + ^ +SELECT interval '1 2:03' day to second; + interval +---------------- + 1 day 02:03:00 +(1 row) + +SELECT interval '1 2:03:04' day to second; + interval +---------------- + 1 day 02:03:04 +(1 row) + +SELECT interval '1 2' hour to minute; +ERROR: invalid input syntax for type interval: "1 2" +LINE 1: SELECT interval '1 2' hour to minute; + ^ +SELECT interval '1 2:03' hour to minute; + interval +---------------- + 1 day 02:03:00 +(1 row) + +SELECT interval '1 2:03:04' hour to minute; + interval +---------------- + 1 day 02:03:00 +(1 row) + +SELECT interval '1 2' hour to second; +ERROR: invalid input syntax for type interval: "1 2" +LINE 1: SELECT interval '1 2' hour to second; + ^ +SELECT interval '1 2:03' hour to second; + interval +---------------- + 1 day 02:03:00 +(1 row) + +SELECT interval '1 2:03:04' hour to second; + interval +---------------- + 1 day 02:03:04 +(1 row) + +SELECT interval '1 2' minute to second; +ERROR: invalid input syntax for type interval: "1 2" +LINE 1: SELECT interval '1 2' minute to second; + ^ +SELECT interval '1 2:03' minute to second; + interval +---------------- + 1 day 00:02:03 +(1 row) + +SELECT interval '1 2:03:04' minute to second; + interval +---------------- + 1 day 02:03:04 +(1 row) + +SELECT interval '1 +2:03' minute to second; + interval +---------------- + 1 day 00:02:03 +(1 row) + +SELECT interval '1 +2:03:04' minute to second; + interval +---------------- + 1 day 02:03:04 +(1 row) + +SELECT interval '1 -2:03' minute to second; + interval +----------------- + 1 day -00:02:03 +(1 row) + +SELECT interval '1 -2:03:04' minute to second; + interval +----------------- + 1 day -02:03:04 +(1 row) + +SELECT interval '123 11' day to hour; -- ok + interval +------------------- + 123 days 11:00:00 +(1 row) + +SELECT interval '123 11' day; -- not ok +ERROR: invalid input syntax for type interval: "123 11" +LINE 1: SELECT interval '123 11' day; + ^ +SELECT interval '123 11'; -- not ok, too ambiguous +ERROR: invalid input syntax for type interval: "123 11" +LINE 1: SELECT interval '123 11'; + ^ +SELECT interval '123 2:03 -2:04'; -- not ok, redundant hh:mm fields +ERROR: invalid input syntax for type interval: "123 2:03 -2:04" +LINE 1: SELECT interval '123 2:03 -2:04'; + ^ +-- test syntaxes for restricted precision +SELECT interval(0) '1 day 01:23:45.6789'; + interval +---------------- + 1 day 01:23:46 +(1 row) + +SELECT interval(2) '1 day 01:23:45.6789'; + interval +------------------- + 1 day 01:23:45.68 +(1 row) + +SELECT interval '12:34.5678' minute to second(2); -- per SQL spec + interval +------------- + 00:12:34.57 +(1 row) + +SELECT interval '1.234' second; + interval +-------------- + 00:00:01.234 +(1 row) + +SELECT interval '1.234' second(2); + interval +------------- + 00:00:01.23 +(1 row) + +SELECT interval '1 2.345' day to second(2); +ERROR: invalid input syntax for type interval: "1 2.345" +LINE 1: SELECT interval '1 2.345' day to second(2); + ^ +SELECT interval '1 2:03' day to second(2); + interval +---------------- + 1 day 02:03:00 +(1 row) + +SELECT interval '1 2:03.4567' day to second(2); + interval +------------------- + 1 day 00:02:03.46 +(1 row) + +SELECT interval '1 2:03:04.5678' day to second(2); + interval +------------------- + 1 day 02:03:04.57 +(1 row) + +SELECT interval '1 2.345' hour to second(2); +ERROR: invalid input syntax for type interval: "1 2.345" +LINE 1: SELECT interval '1 2.345' hour to second(2); + ^ +SELECT interval '1 2:03.45678' hour to second(2); + interval +------------------- + 1 day 00:02:03.46 +(1 row) + +SELECT interval '1 2:03:04.5678' hour to second(2); + interval +------------------- + 1 day 02:03:04.57 +(1 row) + +SELECT interval '1 2.3456' minute to second(2); +ERROR: invalid input syntax for type interval: "1 2.3456" +LINE 1: SELECT interval '1 2.3456' minute to second(2); + ^ +SELECT interval '1 2:03.5678' minute to second(2); + interval +------------------- + 1 day 00:02:03.57 +(1 row) + +SELECT interval '1 2:03:04.5678' minute to second(2); + interval +------------------- + 1 day 02:03:04.57 +(1 row) + +-- test casting to restricted precision (bug #14479) +SELECT f1, f1::INTERVAL DAY TO MINUTE AS "minutes", + (f1 + INTERVAL '1 month')::INTERVAL MONTH::INTERVAL YEAR AS "years" + FROM interval_tbl; + f1 | minutes | years +-----------------+-----------------+---------- + 00:01:00 | 00:01:00 | 00:00:00 + 05:00:00 | 05:00:00 | 00:00:00 + 10 days | 10 days | 00:00:00 + 34 years | 34 years | 34 years + 3 mons | 3 mons | 00:00:00 + -00:00:14 | 00:00:00 | 00:00:00 + 1 day 02:03:04 | 1 day 02:03:00 | 00:00:00 + 6 years | 6 years | 6 years + 5 mons | 5 mons | 00:00:00 + 5 mons 12:00:00 | 5 mons 12:00:00 | 00:00:00 +(10 rows) + +-- test inputting and outputting SQL standard interval literals +SET IntervalStyle TO sql_standard; +SELECT interval '0' AS "zero", + interval '1-2' year to month AS "year-month", + interval '1 2:03:04' day to second AS "day-time", + - interval '1-2' AS "negative year-month", + - interval '1 2:03:04' AS "negative day-time"; + zero | year-month | day-time | negative year-month | negative day-time +------+------------+-----------+---------------------+------------------- + 0 | 1-2 | 1 2:03:04 | -1-2 | -1 2:03:04 +(1 row) + +-- test input of some not-quite-standard interval values in the sql style +SET IntervalStyle TO postgres; +SELECT interval '+1 -1:00:00', + interval '-1 +1:00:00', + interval '+1-2 -3 +4:05:06.789', + interval '-1-2 +3 -4:05:06.789'; + interval | interval | interval | interval +-----------------+-------------------+-------------------------------------+---------------------------------------- + 1 day -01:00:00 | -1 days +01:00:00 | 1 year 2 mons -3 days +04:05:06.789 | -1 years -2 mons +3 days -04:05:06.789 +(1 row) + +-- test output of couple non-standard interval values in the sql style +SET IntervalStyle TO sql_standard; +SELECT interval '1 day -1 hours', + interval '-1 days +1 hours', + interval '1 years 2 months -3 days 4 hours 5 minutes 6.789 seconds', + - interval '1 years 2 months -3 days 4 hours 5 minutes 6.789 seconds'; + interval | interval | interval | ?column? +------------------+------------------+----------------------+---------------------- + +0-0 +1 -1:00:00 | +0-0 -1 +1:00:00 | +1-2 -3 +4:05:06.789 | -1-2 +3 -4:05:06.789 +(1 row) + +-- test outputting iso8601 intervals +SET IntervalStyle to iso_8601; +select interval '0' AS "zero", + interval '1-2' AS "a year 2 months", + interval '1 2:03:04' AS "a bit over a day", + interval '2:03:04.45679' AS "a bit over 2 hours", + (interval '1-2' + interval '3 4:05:06.7') AS "all fields", + (interval '1-2' - interval '3 4:05:06.7') AS "mixed sign", + (- interval '1-2' + interval '3 4:05:06.7') AS "negative"; + zero | a year 2 months | a bit over a day | a bit over 2 hours | all fields | mixed sign | negative +------+-----------------+------------------+--------------------+------------------+----------------------+-------------------- + PT0S | P1Y2M | P1DT2H3M4S | PT2H3M4.45679S | P1Y2M3DT4H5M6.7S | P1Y2M-3DT-4H-5M-6.7S | P-1Y-2M3DT4H5M6.7S +(1 row) + +-- test inputting ISO 8601 4.4.2.1 "Format With Time Unit Designators" +SET IntervalStyle to sql_standard; +select interval 'P0Y' AS "zero", + interval 'P1Y2M' AS "a year 2 months", + interval 'P1W' AS "a week", + interval 'P1DT2H3M4S' AS "a bit over a day", + interval 'P1Y2M3DT4H5M6.7S' AS "all fields", + interval 'P-1Y-2M-3DT-4H-5M-6.7S' AS "negative", + interval 'PT-0.1S' AS "fractional second"; + zero | a year 2 months | a week | a bit over a day | all fields | negative | fractional second +------+-----------------+-----------+------------------+--------------------+--------------------+------------------- + 0 | 1-2 | 7 0:00:00 | 1 2:03:04 | +1-2 +3 +4:05:06.7 | -1-2 -3 -4:05:06.7 | -0:00:00.1 +(1 row) + +-- test inputting ISO 8601 4.4.2.2 "Alternative Format" +SET IntervalStyle to postgres; +select interval 'P00021015T103020' AS "ISO8601 Basic Format", + interval 'P0002-10-15T10:30:20' AS "ISO8601 Extended Format"; + ISO8601 Basic Format | ISO8601 Extended Format +----------------------------------+---------------------------------- + 2 years 10 mons 15 days 10:30:20 | 2 years 10 mons 15 days 10:30:20 +(1 row) + +-- Make sure optional ISO8601 alternative format fields are optional. +select interval 'P0002' AS "year only", + interval 'P0002-10' AS "year month", + interval 'P0002-10-15' AS "year month day", + interval 'P0002T1S' AS "year only plus time", + interval 'P0002-10T1S' AS "year month plus time", + interval 'P0002-10-15T1S' AS "year month day plus time", + interval 'PT10' AS "hour only", + interval 'PT10:30' AS "hour minute"; + year only | year month | year month day | year only plus time | year month plus time | year month day plus time | hour only | hour minute +-----------+-----------------+-------------------------+---------------------+--------------------------+----------------------------------+-----------+------------- + 2 years | 2 years 10 mons | 2 years 10 mons 15 days | 2 years 00:00:01 | 2 years 10 mons 00:00:01 | 2 years 10 mons 15 days 00:00:01 | 10:00:00 | 10:30:00 +(1 row) + +-- test a couple rounding cases that changed since 8.3 w/ HAVE_INT64_TIMESTAMP. +SET IntervalStyle to postgres_verbose; +select interval '-10 mons -3 days +03:55:06.70'; + interval +-------------------------------------------------- + @ 10 mons 3 days -3 hours -55 mins -6.7 secs ago +(1 row) + +select interval '1 year 2 mons 3 days 04:05:06.699999'; + interval +----------------------------------------------------- + @ 1 year 2 mons 3 days 4 hours 5 mins 6.699999 secs +(1 row) + +select interval '0:0:0.7', interval '@ 0.70 secs', interval '0.7 seconds'; + interval | interval | interval +------------+------------+------------ + @ 0.7 secs | @ 0.7 secs | @ 0.7 secs +(1 row) + +-- check that '30 days' equals '1 month' according to the hash function +select '30 days'::interval = '1 month'::interval as t; + t +--- + t +(1 row) + +select interval_hash('30 days'::interval) = interval_hash('1 month'::interval) as t; + t +--- + t +(1 row) + +-- numeric constructor +select make_interval(years := 2); + make_interval +--------------- + @ 2 years +(1 row) + +select make_interval(years := 1, months := 6); + make_interval +----------------- + @ 1 year 6 mons +(1 row) + +select make_interval(years := 1, months := -1, weeks := 5, days := -7, hours := 25, mins := -180); + make_interval +---------------------------- + @ 11 mons 28 days 22 hours +(1 row) + +select make_interval() = make_interval(years := 0, months := 0, weeks := 0, days := 0, mins := 0, secs := 0.0); + ?column? +---------- + t +(1 row) + +select make_interval(hours := -2, mins := -10, secs := -25.3); + make_interval +--------------------------------- + @ 2 hours 10 mins 25.3 secs ago +(1 row) + +select make_interval(years := 'inf'::float::int); +ERROR: integer out of range +select make_interval(months := 'NaN'::float::int); +ERROR: integer out of range +select make_interval(secs := 'inf'); +ERROR: interval out of range +select make_interval(secs := 'NaN'); +ERROR: interval out of range +select make_interval(secs := 7e12); + make_interval +------------------------------------ + @ 1944444444 hours 26 mins 40 secs +(1 row) + |