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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 * FROM INT2_TBL AS f(a, b);
ERROR: table "f" has 1 columns available but 2 columns specified
SELECT * FROM (TABLE int2_tbl) AS s (a, b);
ERROR: table "s" has 1 columns available but 2 columns specified
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)
|
