ydb/yql/essentials/tests/postgresql/original/cases/interval.out

--
-- 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 * FROM INTERVAL_TBL;
       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 * FROM INTERVAL_TBL
   WHERE INTERVAL_TBL.f1 <> interval '@ 10 days';
       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 * FROM INTERVAL_TBL
   WHERE INTERVAL_TBL.f1 <= interval '@ 5 hours';
    f1     
-----------
 00:01:00
 05:00:00
 -00:00:14
(3 rows)

SELECT * FROM INTERVAL_TBL
   WHERE INTERVAL_TBL.f1 < interval '@ 1 day';
    f1     
-----------
 00:01:00
 05:00:00
 -00:00:14
(3 rows)

SELECT * FROM INTERVAL_TBL
   WHERE INTERVAL_TBL.f1 = interval '@ 34 years';
    f1    
----------
 34 years
(1 row)

SELECT * FROM INTERVAL_TBL
   WHERE INTERVAL_TBL.f1 >= interval '@ 1 month';
       f1        
-----------------
 34 years
 3 mons
 6 years
 5 mons
 5 mons 12:00:00
(5 rows)

SELECT * FROM INTERVAL_TBL
   WHERE INTERVAL_TBL.f1 > interval '@ 3 seconds ago';
       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 r1.*, r2.*
   FROM INTERVAL_TBL r1, INTERVAL_TBL r2
   WHERE r1.f1 > r2.f1
   ORDER BY r1.f1, r2.f1;
       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 * FROM INTERVAL_TBL;
              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)

--
-- test EXTRACT
--
SELECT f1,
    EXTRACT(MICROSECOND FROM f1) AS MICROSECOND,
    EXTRACT(MILLISECOND FROM f1) AS MILLISECOND,
    EXTRACT(SECOND FROM f1) AS SECOND,
    EXTRACT(MINUTE FROM f1) AS MINUTE,
    EXTRACT(HOUR FROM f1) AS HOUR,
    EXTRACT(DAY FROM f1) AS DAY,
    EXTRACT(MONTH FROM f1) AS MONTH,
    EXTRACT(QUARTER FROM f1) AS QUARTER,
    EXTRACT(YEAR FROM f1) AS YEAR,
    EXTRACT(DECADE FROM f1) AS DECADE,
    EXTRACT(CENTURY FROM f1) AS CENTURY,
    EXTRACT(MILLENNIUM FROM f1) AS MILLENNIUM,
    EXTRACT(EPOCH FROM f1) AS EPOCH
    FROM INTERVAL_TBL;
              f1               | microsecond | millisecond |   second   | minute | hour | day | month | quarter | year | decade | century | millennium |       epoch       
-------------------------------+-------------+-------------+------------+--------+------+-----+-------+---------+------+--------+---------+------------+-------------------
 @ 1 min                       |           0 |       0.000 |   0.000000 |      1 |    0 |   0 |     0 |       1 |    0 |      0 |       0 |          0 |         60.000000
 @ 5 hours                     |           0 |       0.000 |   0.000000 |      0 |    5 |   0 |     0 |       1 |    0 |      0 |       0 |          0 |      18000.000000
 @ 10 days                     |           0 |       0.000 |   0.000000 |      0 |    0 |  10 |     0 |       1 |    0 |      0 |       0 |          0 |     864000.000000
 @ 34 years                    |           0 |       0.000 |   0.000000 |      0 |    0 |   0 |     0 |       1 |   34 |      3 |       0 |          0 | 1072958400.000000
 @ 3 mons                      |           0 |       0.000 |   0.000000 |      0 |    0 |   0 |     3 |       2 |    0 |      0 |       0 |          0 |    7776000.000000
 @ 14 secs ago                 |   -14000000 |  -14000.000 | -14.000000 |      0 |    0 |   0 |     0 |       1 |    0 |      0 |       0 |          0 |        -14.000000
 @ 1 day 2 hours 3 mins 4 secs |     4000000 |    4000.000 |   4.000000 |      3 |    2 |   1 |     0 |       1 |    0 |      0 |       0 |          0 |      93784.000000
 @ 6 years                     |           0 |       0.000 |   0.000000 |      0 |    0 |   0 |     0 |       1 |    6 |      0 |       0 |          0 |  189345600.000000
 @ 5 mons                      |           0 |       0.000 |   0.000000 |      0 |    0 |   0 |     5 |       2 |    0 |      0 |       0 |          0 |   12960000.000000
 @ 5 mons 12 hours             |           0 |       0.000 |   0.000000 |      0 |   12 |   0 |     5 |       2 |    0 |      0 |       0 |          0 |   13003200.000000
(10 rows)

SELECT EXTRACT(FORTNIGHT FROM INTERVAL '2 days');  -- error
ERROR:  interval units "fortnight" not recognized
SELECT EXTRACT(TIMEZONE FROM INTERVAL '2 days');  -- error
ERROR:  interval units "timezone" not supported
SELECT EXTRACT(DECADE FROM INTERVAL '100 y');
 extract 
---------
      10
(1 row)

SELECT EXTRACT(DECADE FROM INTERVAL '99 y');
 extract 
---------
       9
(1 row)

SELECT EXTRACT(DECADE FROM INTERVAL '-99 y');
 extract 
---------
      -9
(1 row)

SELECT EXTRACT(DECADE FROM INTERVAL '-100 y');
 extract 
---------
     -10
(1 row)

SELECT EXTRACT(CENTURY FROM INTERVAL '100 y');
 extract 
---------
       1
(1 row)

SELECT EXTRACT(CENTURY FROM INTERVAL '99 y');
 extract 
---------
       0
(1 row)

SELECT EXTRACT(CENTURY FROM INTERVAL '-99 y');
 extract 
---------
       0
(1 row)

SELECT EXTRACT(CENTURY FROM INTERVAL '-100 y');
 extract 
---------
      -1
(1 row)

-- date_part implementation is mostly the same as extract, so only
-- test a few cases for additional coverage.
SELECT f1,
    date_part('microsecond', f1) AS microsecond,
    date_part('millisecond', f1) AS millisecond,
    date_part('second', f1) AS second,
    date_part('epoch', f1) AS epoch
    FROM INTERVAL_TBL;
              f1               | microsecond | millisecond | second |   epoch    
-------------------------------+-------------+-------------+--------+------------
 @ 1 min                       |           0 |           0 |      0 |         60
 @ 5 hours                     |           0 |           0 |      0 |      18000
 @ 10 days                     |           0 |           0 |      0 |     864000
 @ 34 years                    |           0 |           0 |      0 | 1072958400
 @ 3 mons                      |           0 |           0 |      0 |    7776000
 @ 14 secs ago                 |   -14000000 |      -14000 |    -14 |        -14
 @ 1 day 2 hours 3 mins 4 secs |     4000000 |        4000 |      4 |      93784
 @ 6 years                     |           0 |           0 |      0 |  189345600
 @ 5 mons                      |           0 |           0 |      0 |   12960000
 @ 5 mons 12 hours             |           0 |           0 |      0 |   13003200
(10 rows)

-- internal overflow test case
SELECT extract(epoch from interval '1000000000 days');
        extract        
-----------------------
 86400000000000.000000
(1 row)