mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-09-13 17:39:36 +02:00
6456810078
Implement TIME WITH TIME ZONE type (timetz internal type). Remap length() for character strings to CHAR_LENGTH() for SQL92 and to remove the ambiguity with geometric length() functions. Keep length() for character strings for backward compatibility. Shrink stored views by removing internal column name list from visible rte. Implement min(), max() for time and timetz data types. Implement conversion of TIME to INTERVAL. Implement abs(), mod(), fac() for the int8 data type. Rename some math functions to generic names: round(), sqrt(), cbrt(), pow(), etc. Rename NUMERIC power() function to pow(). Fix int2 factorial to calculate result in int4. Enhance the Oracle compatibility function translate() to work with string arguments (from Edwin Ramirez). Modify pg_proc system table to remove OID holes.
298 lines
6.4 KiB
Plaintext
298 lines
6.4 KiB
Plaintext
--
|
|
-- INT4
|
|
-- WARNING: int4 operators never check for over/underflow!
|
|
-- Some of these answers are consequently numerically incorrect.
|
|
--
|
|
CREATE TABLE INT4_TBL(f1 int4);
|
|
INSERT INTO INT4_TBL(f1) VALUES ('0');
|
|
INSERT INTO INT4_TBL(f1) VALUES ('123456');
|
|
INSERT INTO INT4_TBL(f1) VALUES ('-123456');
|
|
INSERT INTO INT4_TBL(f1) VALUES ('34.5');
|
|
ERROR: pg_atoi: error in "34.5": can't parse ".5"
|
|
-- largest and smallest values
|
|
INSERT INTO INT4_TBL(f1) VALUES ('2147483647');
|
|
INSERT INTO INT4_TBL(f1) VALUES ('-2147483647');
|
|
-- bad input values -- should give warnings
|
|
INSERT INTO INT4_TBL(f1) VALUES ('1000000000000');
|
|
ERROR: pg_atoi: error reading "1000000000000": Numerical result out of range
|
|
INSERT INTO INT4_TBL(f1) VALUES ('asdf');
|
|
ERROR: pg_atoi: error in "asdf": can't parse "asdf"
|
|
SELECT '' AS five, INT4_TBL.*;
|
|
five | f1
|
|
------+-------------
|
|
| 0
|
|
| 123456
|
|
| -123456
|
|
| 2147483647
|
|
| -2147483647
|
|
(5 rows)
|
|
|
|
SELECT '' AS four, i.* FROM INT4_TBL i WHERE i.f1 <> int2 '0';
|
|
four | f1
|
|
------+-------------
|
|
| 123456
|
|
| -123456
|
|
| 2147483647
|
|
| -2147483647
|
|
(4 rows)
|
|
|
|
SELECT '' AS four, i.* FROM INT4_TBL i WHERE i.f1 <> int4 '0';
|
|
four | f1
|
|
------+-------------
|
|
| 123456
|
|
| -123456
|
|
| 2147483647
|
|
| -2147483647
|
|
(4 rows)
|
|
|
|
SELECT '' AS one, i.* FROM INT4_TBL i WHERE i.f1 = int2 '0';
|
|
one | f1
|
|
-----+----
|
|
| 0
|
|
(1 row)
|
|
|
|
SELECT '' AS one, i.* FROM INT4_TBL i WHERE i.f1 = int4 '0';
|
|
one | f1
|
|
-----+----
|
|
| 0
|
|
(1 row)
|
|
|
|
SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 < int2 '0';
|
|
two | f1
|
|
-----+-------------
|
|
| -123456
|
|
| -2147483647
|
|
(2 rows)
|
|
|
|
SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 < int4 '0';
|
|
two | f1
|
|
-----+-------------
|
|
| -123456
|
|
| -2147483647
|
|
(2 rows)
|
|
|
|
SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 <= int2 '0';
|
|
three | f1
|
|
-------+-------------
|
|
| 0
|
|
| -123456
|
|
| -2147483647
|
|
(3 rows)
|
|
|
|
SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 <= int4 '0';
|
|
three | f1
|
|
-------+-------------
|
|
| 0
|
|
| -123456
|
|
| -2147483647
|
|
(3 rows)
|
|
|
|
SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 > int2 '0';
|
|
two | f1
|
|
-----+------------
|
|
| 123456
|
|
| 2147483647
|
|
(2 rows)
|
|
|
|
SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 > int4 '0';
|
|
two | f1
|
|
-----+------------
|
|
| 123456
|
|
| 2147483647
|
|
(2 rows)
|
|
|
|
SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 >= int2 '0';
|
|
three | f1
|
|
-------+------------
|
|
| 0
|
|
| 123456
|
|
| 2147483647
|
|
(3 rows)
|
|
|
|
SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 >= int4 '0';
|
|
three | f1
|
|
-------+------------
|
|
| 0
|
|
| 123456
|
|
| 2147483647
|
|
(3 rows)
|
|
|
|
-- positive odds
|
|
SELECT '' AS one, i.* FROM INT4_TBL i WHERE (i.f1 % int2 '2') = int2 '1';
|
|
one | f1
|
|
-----+------------
|
|
| 2147483647
|
|
(1 row)
|
|
|
|
-- any evens
|
|
SELECT '' AS three, i.* FROM INT4_TBL i WHERE (i.f1 % int4 '2') = int2 '0';
|
|
three | f1
|
|
-------+---------
|
|
| 0
|
|
| 123456
|
|
| -123456
|
|
(3 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 * int2 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+---------
|
|
| 0 | 0
|
|
| 123456 | 246912
|
|
| -123456 | -246912
|
|
| 2147483647 | -2
|
|
| -2147483647 | 2
|
|
(5 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 * int4 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+---------
|
|
| 0 | 0
|
|
| 123456 | 246912
|
|
| -123456 | -246912
|
|
| 2147483647 | -2
|
|
| -2147483647 | 2
|
|
(5 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 + int2 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+-------------
|
|
| 0 | 2
|
|
| 123456 | 123458
|
|
| -123456 | -123454
|
|
| 2147483647 | -2147483647
|
|
| -2147483647 | -2147483645
|
|
(5 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 + int4 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+-------------
|
|
| 0 | 2
|
|
| 123456 | 123458
|
|
| -123456 | -123454
|
|
| 2147483647 | -2147483647
|
|
| -2147483647 | -2147483645
|
|
(5 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 - int2 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+------------
|
|
| 0 | -2
|
|
| 123456 | 123454
|
|
| -123456 | -123458
|
|
| 2147483647 | 2147483645
|
|
| -2147483647 | 2147483647
|
|
(5 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 - int4 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+------------
|
|
| 0 | -2
|
|
| 123456 | 123454
|
|
| -123456 | -123458
|
|
| 2147483647 | 2147483645
|
|
| -2147483647 | 2147483647
|
|
(5 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 / int2 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+-------------
|
|
| 0 | 0
|
|
| 123456 | 61728
|
|
| -123456 | -61728
|
|
| 2147483647 | 1073741823
|
|
| -2147483647 | -1073741823
|
|
(5 rows)
|
|
|
|
SELECT '' AS five, i.f1, i.f1 / int4 '2' AS x FROM INT4_TBL i;
|
|
five | f1 | x
|
|
------+-------------+-------------
|
|
| 0 | 0
|
|
| 123456 | 61728
|
|
| -123456 | -61728
|
|
| 2147483647 | 1073741823
|
|
| -2147483647 | -1073741823
|
|
(5 rows)
|
|
|
|
--
|
|
-- more complex expressions
|
|
--
|
|
-- variations on unary minus parsing
|
|
SELECT -2+3 AS one;
|
|
one
|
|
-----
|
|
1
|
|
(1 row)
|
|
|
|
SELECT 4-2 AS two;
|
|
two
|
|
-----
|
|
2
|
|
(1 row)
|
|
|
|
SELECT 2- -1 AS three;
|
|
three
|
|
-------
|
|
3
|
|
(1 row)
|
|
|
|
SELECT 2 - -2 AS four;
|
|
four
|
|
------
|
|
4
|
|
(1 row)
|
|
|
|
SELECT int2 '2' * int2 '2' = int2 '16' / int2 '4' AS true;
|
|
true
|
|
------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT int4 '2' * int2 '2' = int2 '16' / int4 '4' AS true;
|
|
true
|
|
------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT int2 '2' * int4 '2' = int4 '16' / int2 '4' AS true;
|
|
true
|
|
------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT int4 '1000' < int4 '999' AS false;
|
|
false
|
|
-------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT 4! AS twenty_four;
|
|
twenty_four
|
|
-------------
|
|
24
|
|
(1 row)
|
|
|
|
SELECT !!3 AS six;
|
|
six
|
|
-----
|
|
6
|
|
(1 row)
|
|
|
|
SELECT 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 AS ten;
|
|
ten
|
|
-----
|
|
10
|
|
(1 row)
|
|
|
|
SELECT 2 + 2 / 2 AS three;
|
|
three
|
|
-------
|
|
3
|
|
(1 row)
|
|
|
|
SELECT (2 + 2) / 2 AS two;
|
|
two
|
|
-----
|
|
2
|
|
(1 row)
|
|
|