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- --
- -- INT4
- --
- 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: invalid input syntax for type integer: "34.5"
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES ('34.5');
- ^
- -- largest and smallest values
- INSERT INTO INT4_TBL(f1) VALUES ('2147483647');
- INSERT INTO INT4_TBL(f1) VALUES ('-2147483647');
- -- bad input values -- should give errors
- INSERT INTO INT4_TBL(f1) VALUES ('1000000000000');
- ERROR: value "1000000000000" is out of range for type integer
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES ('1000000000000');
- ^
- INSERT INTO INT4_TBL(f1) VALUES ('asdf');
- ERROR: invalid input syntax for type integer: "asdf"
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES ('asdf');
- ^
- INSERT INTO INT4_TBL(f1) VALUES (' ');
- ERROR: invalid input syntax for type integer: " "
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES (' ');
- ^
- INSERT INTO INT4_TBL(f1) VALUES (' asdf ');
- ERROR: invalid input syntax for type integer: " asdf "
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES (' asdf ');
- ^
- INSERT INTO INT4_TBL(f1) VALUES ('- 1234');
- ERROR: invalid input syntax for type integer: "- 1234"
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES ('- 1234');
- ^
- INSERT INTO INT4_TBL(f1) VALUES ('123 5');
- ERROR: invalid input syntax for type integer: "123 5"
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES ('123 5');
- ^
- INSERT INTO INT4_TBL(f1) VALUES ('');
- ERROR: invalid input syntax for type integer: ""
- LINE 1: INSERT INTO INT4_TBL(f1) VALUES ('');
- ^
- SELECT * FROM INT4_TBL;
- f1
- -------------
- 0
- 123456
- -123456
- 2147483647
- -2147483647
- (5 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 <> int2 '0';
- f1
- -------------
- 123456
- -123456
- 2147483647
- -2147483647
- (4 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 <> int4 '0';
- f1
- -------------
- 123456
- -123456
- 2147483647
- -2147483647
- (4 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 = int2 '0';
- f1
- ----
- 0
- (1 row)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 = int4 '0';
- f1
- ----
- 0
- (1 row)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 < int2 '0';
- f1
- -------------
- -123456
- -2147483647
- (2 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 < int4 '0';
- f1
- -------------
- -123456
- -2147483647
- (2 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 <= int2 '0';
- f1
- -------------
- 0
- -123456
- -2147483647
- (3 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 <= int4 '0';
- f1
- -------------
- 0
- -123456
- -2147483647
- (3 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 > int2 '0';
- f1
- ------------
- 123456
- 2147483647
- (2 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 > int4 '0';
- f1
- ------------
- 123456
- 2147483647
- (2 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 >= int2 '0';
- f1
- ------------
- 0
- 123456
- 2147483647
- (3 rows)
- SELECT i.* FROM INT4_TBL i WHERE i.f1 >= int4 '0';
- f1
- ------------
- 0
- 123456
- 2147483647
- (3 rows)
- -- positive odds
- SELECT i.* FROM INT4_TBL i WHERE (i.f1 % int2 '2') = int2 '1';
- f1
- ------------
- 2147483647
- (1 row)
- -- any evens
- SELECT i.* FROM INT4_TBL i WHERE (i.f1 % int4 '2') = int2 '0';
- f1
- ---------
- 0
- 123456
- -123456
- (3 rows)
- SELECT i.f1, i.f1 * int2 '2' AS x FROM INT4_TBL i;
- ERROR: integer out of range
- SELECT i.f1, i.f1 * int2 '2' AS x FROM INT4_TBL i
- WHERE abs(f1) < 1073741824;
- f1 | x
- ---------+---------
- 0 | 0
- 123456 | 246912
- -123456 | -246912
- (3 rows)
- SELECT i.f1, i.f1 * int4 '2' AS x FROM INT4_TBL i;
- ERROR: integer out of range
- SELECT i.f1, i.f1 * int4 '2' AS x FROM INT4_TBL i
- WHERE abs(f1) < 1073741824;
- f1 | x
- ---------+---------
- 0 | 0
- 123456 | 246912
- -123456 | -246912
- (3 rows)
- SELECT i.f1, i.f1 + int2 '2' AS x FROM INT4_TBL i;
- ERROR: integer out of range
- SELECT i.f1, i.f1 + int2 '2' AS x FROM INT4_TBL i
- WHERE f1 < 2147483646;
- f1 | x
- -------------+-------------
- 0 | 2
- 123456 | 123458
- -123456 | -123454
- -2147483647 | -2147483645
- (4 rows)
- SELECT i.f1, i.f1 + int4 '2' AS x FROM INT4_TBL i;
- ERROR: integer out of range
- SELECT i.f1, i.f1 + int4 '2' AS x FROM INT4_TBL i
- WHERE f1 < 2147483646;
- f1 | x
- -------------+-------------
- 0 | 2
- 123456 | 123458
- -123456 | -123454
- -2147483647 | -2147483645
- (4 rows)
- SELECT i.f1, i.f1 - int2 '2' AS x FROM INT4_TBL i;
- ERROR: integer out of range
- SELECT i.f1, i.f1 - int2 '2' AS x FROM INT4_TBL i
- WHERE f1 > -2147483647;
- f1 | x
- ------------+------------
- 0 | -2
- 123456 | 123454
- -123456 | -123458
- 2147483647 | 2147483645
- (4 rows)
- SELECT i.f1, i.f1 - int4 '2' AS x FROM INT4_TBL i;
- ERROR: integer out of range
- SELECT i.f1, i.f1 - int4 '2' AS x FROM INT4_TBL i
- WHERE f1 > -2147483647;
- f1 | x
- ------------+------------
- 0 | -2
- 123456 | 123454
- -123456 | -123458
- 2147483647 | 2147483645
- (4 rows)
- SELECT i.f1, i.f1 / int2 '2' AS x FROM INT4_TBL i;
- f1 | x
- -------------+-------------
- 0 | 0
- 123456 | 61728
- -123456 | -61728
- 2147483647 | 1073741823
- -2147483647 | -1073741823
- (5 rows)
- SELECT i.f1, i.f1 / int4 '2' AS x FROM INT4_TBL i;
- 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 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)
- -- corner case
- SELECT (-1::int4<<31)::text;
- text
- -------------
- -2147483648
- (1 row)
- SELECT ((-1::int4<<31)+1)::text;
- text
- -------------
- -2147483647
- (1 row)
- -- check sane handling of INT_MIN overflow cases
- SELECT (-2147483648)::int4 * (-1)::int4;
- ERROR: integer out of range
- SELECT (-2147483648)::int4 / (-1)::int4;
- ERROR: integer out of range
- SELECT (-2147483648)::int4 % (-1)::int4;
- ?column?
- ----------
- 0
- (1 row)
- SELECT (-2147483648)::int4 * (-1)::int2;
- ERROR: integer out of range
- SELECT (-2147483648)::int4 / (-1)::int2;
- ERROR: integer out of range
- SELECT (-2147483648)::int4 % (-1)::int2;
- ?column?
- ----------
- 0
- (1 row)
- -- check rounding when casting from float
- SELECT x, x::int4 AS int4_value
- FROM (VALUES (-2.5::float8),
- (-1.5::float8),
- (-0.5::float8),
- (0.0::float8),
- (0.5::float8),
- (1.5::float8),
- (2.5::float8)) t(x);
- x | int4_value
- ------+------------
- -2.5 | -2
- -1.5 | -2
- -0.5 | 0
- 0 | 0
- 0.5 | 0
- 1.5 | 2
- 2.5 | 2
- (7 rows)
- -- check rounding when casting from numeric
- SELECT x, x::int4 AS int4_value
- FROM (VALUES (-2.5::numeric),
- (-1.5::numeric),
- (-0.5::numeric),
- (0.0::numeric),
- (0.5::numeric),
- (1.5::numeric),
- (2.5::numeric)) t(x);
- x | int4_value
- ------+------------
- -2.5 | -3
- -1.5 | -2
- -0.5 | -1
- 0.0 | 0
- 0.5 | 1
- 1.5 | 2
- 2.5 | 3
- (7 rows)
- SELECT gcd((-2147483648)::int4, 0::int4); -- overflow
- ERROR: integer out of range
- SELECT gcd((-2147483648)::int4, (-2147483648)::int4); -- overflow
- ERROR: integer out of range
- SELECT lcm((-2147483648)::int4, 1::int4); -- overflow
- ERROR: integer out of range
- SELECT lcm(2147483647::int4, 2147483646::int4); -- overflow
- ERROR: integer out of range
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