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- --
- -- INT2
- --
- CREATE TABLE INT2_TBL(f1 int2);
- INSERT INTO INT2_TBL(f1) VALUES ('0 ');
- INSERT INTO INT2_TBL(f1) VALUES (' 1234 ');
- INSERT INTO INT2_TBL(f1) VALUES (' -1234');
- INSERT INTO INT2_TBL(f1) VALUES ('34.5');
- ERROR: invalid input syntax for type smallint: "34.5"
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES ('34.5');
- ^
- -- largest and smallest values
- INSERT INTO INT2_TBL(f1) VALUES ('32767');
- INSERT INTO INT2_TBL(f1) VALUES ('-32767');
- -- bad input values -- should give errors
- INSERT INTO INT2_TBL(f1) VALUES ('100000');
- ERROR: value "100000" is out of range for type smallint
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES ('100000');
- ^
- INSERT INTO INT2_TBL(f1) VALUES ('asdf');
- ERROR: invalid input syntax for type smallint: "asdf"
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES ('asdf');
- ^
- INSERT INTO INT2_TBL(f1) VALUES (' ');
- ERROR: invalid input syntax for type smallint: " "
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES (' ');
- ^
- INSERT INTO INT2_TBL(f1) VALUES ('- 1234');
- ERROR: invalid input syntax for type smallint: "- 1234"
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES ('- 1234');
- ^
- INSERT INTO INT2_TBL(f1) VALUES ('4 444');
- ERROR: invalid input syntax for type smallint: "4 444"
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES ('4 444');
- ^
- INSERT INTO INT2_TBL(f1) VALUES ('123 dt');
- ERROR: invalid input syntax for type smallint: "123 dt"
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES ('123 dt');
- ^
- INSERT INTO INT2_TBL(f1) VALUES ('');
- ERROR: invalid input syntax for type smallint: ""
- LINE 1: INSERT INTO INT2_TBL(f1) VALUES ('');
- ^
- SELECT * FROM INT2_TBL;
- f1
- --------
- 0
- 1234
- -1234
- 32767
- -32767
- (5 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 <> int2 '0';
- f1
- --------
- 1234
- -1234
- 32767
- -32767
- (4 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 <> int4 '0';
- f1
- --------
- 1234
- -1234
- 32767
- -32767
- (4 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 = int2 '0';
- f1
- ----
- 0
- (1 row)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 = int4 '0';
- f1
- ----
- 0
- (1 row)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 < int2 '0';
- f1
- --------
- -1234
- -32767
- (2 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 < int4 '0';
- f1
- --------
- -1234
- -32767
- (2 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 <= int2 '0';
- f1
- --------
- 0
- -1234
- -32767
- (3 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 <= int4 '0';
- f1
- --------
- 0
- -1234
- -32767
- (3 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 > int2 '0';
- f1
- -------
- 1234
- 32767
- (2 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 > int4 '0';
- f1
- -------
- 1234
- 32767
- (2 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 >= int2 '0';
- f1
- -------
- 0
- 1234
- 32767
- (3 rows)
- SELECT i.* FROM INT2_TBL i WHERE i.f1 >= int4 '0';
- f1
- -------
- 0
- 1234
- 32767
- (3 rows)
- -- positive odds
- SELECT i.* FROM INT2_TBL i WHERE (i.f1 % int2 '2') = int2 '1';
- f1
- -------
- 32767
- (1 row)
- -- any evens
- SELECT i.* FROM INT2_TBL i WHERE (i.f1 % int4 '2') = int2 '0';
- f1
- -------
- 0
- 1234
- -1234
- (3 rows)
- SELECT i.f1, i.f1 * int2 '2' AS x FROM INT2_TBL i;
- ERROR: smallint out of range
- SELECT i.f1, i.f1 * int2 '2' AS x FROM INT2_TBL i
- WHERE abs(f1) < 16384;
- f1 | x
- -------+-------
- 0 | 0
- 1234 | 2468
- -1234 | -2468
- (3 rows)
- SELECT i.f1, i.f1 * int4 '2' AS x FROM INT2_TBL i;
- f1 | x
- --------+--------
- 0 | 0
- 1234 | 2468
- -1234 | -2468
- 32767 | 65534
- -32767 | -65534
- (5 rows)
- SELECT i.f1, i.f1 + int2 '2' AS x FROM INT2_TBL i;
- ERROR: smallint out of range
- SELECT i.f1, i.f1 + int2 '2' AS x FROM INT2_TBL i
- WHERE f1 < 32766;
- f1 | x
- --------+--------
- 0 | 2
- 1234 | 1236
- -1234 | -1232
- -32767 | -32765
- (4 rows)
- SELECT i.f1, i.f1 + int4 '2' AS x FROM INT2_TBL i;
- f1 | x
- --------+--------
- 0 | 2
- 1234 | 1236
- -1234 | -1232
- 32767 | 32769
- -32767 | -32765
- (5 rows)
- SELECT i.f1, i.f1 - int2 '2' AS x FROM INT2_TBL i;
- ERROR: smallint out of range
- SELECT i.f1, i.f1 - int2 '2' AS x FROM INT2_TBL i
- WHERE f1 > -32767;
- f1 | x
- -------+-------
- 0 | -2
- 1234 | 1232
- -1234 | -1236
- 32767 | 32765
- (4 rows)
- SELECT i.f1, i.f1 - int4 '2' AS x FROM INT2_TBL i;
- f1 | x
- --------+--------
- 0 | -2
- 1234 | 1232
- -1234 | -1236
- 32767 | 32765
- -32767 | -32769
- (5 rows)
- SELECT i.f1, i.f1 / int2 '2' AS x FROM INT2_TBL i;
- f1 | x
- --------+--------
- 0 | 0
- 1234 | 617
- -1234 | -617
- 32767 | 16383
- -32767 | -16383
- (5 rows)
- SELECT i.f1, i.f1 / int4 '2' AS x FROM INT2_TBL i;
- f1 | x
- --------+--------
- 0 | 0
- 1234 | 617
- -1234 | -617
- 32767 | 16383
- -32767 | -16383
- (5 rows)
- -- corner cases
- SELECT (-1::int2<<15)::text;
- text
- --------
- -32768
- (1 row)
- SELECT ((-1::int2<<15)+1::int2)::text;
- text
- --------
- -32767
- (1 row)
- -- check sane handling of INT16_MIN overflow cases
- SELECT (-32768)::int2 * (-1)::int2;
- ERROR: smallint out of range
- SELECT (-32768)::int2 / (-1)::int2;
- ERROR: smallint out of range
- SELECT (-32768)::int2 % (-1)::int2;
- ?column?
- ----------
- 0
- (1 row)
- -- check rounding when casting from float
- SELECT x, x::int2 AS int2_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 | int2_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::int2 AS int2_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 | int2_value
- ------+------------
- -2.5 | -3
- -1.5 | -2
- -0.5 | -1
- 0.0 | 0
- 0.5 | 1
- 1.5 | 2
- 2.5 | 3
- (7 rows)
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