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9d402c73ad
Move from int4 to numeric test. (They were originally int4 functions, but were reimplemented for numeric in 04a4821adef38155b7920ba9eb83c4c3c29156f8.) Add some tests for edge cases. Discussion: https://www.postgresql.org/message-id/flat/6ce1df0e-86a3-e544-743a-f357ff663f68%402ndquadrant.com
179 lines
5.0 KiB
SQL
179 lines
5.0 KiB
SQL
--
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-- INT4
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--
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CREATE TABLE INT4_TBL(f1 int4);
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INSERT INTO INT4_TBL(f1) VALUES (' 0 ');
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INSERT INTO INT4_TBL(f1) VALUES ('123456 ');
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INSERT INTO INT4_TBL(f1) VALUES (' -123456');
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INSERT INTO INT4_TBL(f1) VALUES ('34.5');
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-- largest and smallest values
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INSERT INTO INT4_TBL(f1) VALUES ('2147483647');
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INSERT INTO INT4_TBL(f1) VALUES ('-2147483647');
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-- bad input values -- should give errors
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INSERT INTO INT4_TBL(f1) VALUES ('1000000000000');
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INSERT INTO INT4_TBL(f1) VALUES ('asdf');
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INSERT INTO INT4_TBL(f1) VALUES (' ');
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INSERT INTO INT4_TBL(f1) VALUES (' asdf ');
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INSERT INTO INT4_TBL(f1) VALUES ('- 1234');
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INSERT INTO INT4_TBL(f1) VALUES ('123 5');
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INSERT INTO INT4_TBL(f1) VALUES ('');
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SELECT '' AS five, * FROM INT4_TBL;
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SELECT '' AS four, i.* FROM INT4_TBL i WHERE i.f1 <> int2 '0';
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SELECT '' AS four, i.* FROM INT4_TBL i WHERE i.f1 <> int4 '0';
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SELECT '' AS one, i.* FROM INT4_TBL i WHERE i.f1 = int2 '0';
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SELECT '' AS one, i.* FROM INT4_TBL i WHERE i.f1 = int4 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 < int2 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 < int4 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 <= int2 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 <= int4 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 > int2 '0';
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SELECT '' AS two, i.* FROM INT4_TBL i WHERE i.f1 > int4 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 >= int2 '0';
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE i.f1 >= int4 '0';
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-- positive odds
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SELECT '' AS one, i.* FROM INT4_TBL i WHERE (i.f1 % int2 '2') = int2 '1';
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-- any evens
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SELECT '' AS three, i.* FROM INT4_TBL i WHERE (i.f1 % int4 '2') = int2 '0';
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SELECT '' AS five, i.f1, i.f1 * int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 * int2 '2' AS x FROM INT4_TBL i
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WHERE abs(f1) < 1073741824;
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SELECT '' AS five, i.f1, i.f1 * int4 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 * int4 '2' AS x FROM INT4_TBL i
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WHERE abs(f1) < 1073741824;
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SELECT '' AS five, i.f1, i.f1 + int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 + int2 '2' AS x FROM INT4_TBL i
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WHERE f1 < 2147483646;
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SELECT '' AS five, i.f1, i.f1 + int4 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 + int4 '2' AS x FROM INT4_TBL i
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WHERE f1 < 2147483646;
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SELECT '' AS five, i.f1, i.f1 - int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 - int2 '2' AS x FROM INT4_TBL i
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WHERE f1 > -2147483647;
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SELECT '' AS five, i.f1, i.f1 - int4 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 - int4 '2' AS x FROM INT4_TBL i
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WHERE f1 > -2147483647;
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SELECT '' AS five, i.f1, i.f1 / int2 '2' AS x FROM INT4_TBL i;
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SELECT '' AS five, i.f1, i.f1 / int4 '2' AS x FROM INT4_TBL i;
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--
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-- more complex expressions
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--
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-- variations on unary minus parsing
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SELECT -2+3 AS one;
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SELECT 4-2 AS two;
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SELECT 2- -1 AS three;
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SELECT 2 - -2 AS four;
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SELECT int2 '2' * int2 '2' = int2 '16' / int2 '4' AS true;
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SELECT int4 '2' * int2 '2' = int2 '16' / int4 '4' AS true;
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SELECT int2 '2' * int4 '2' = int4 '16' / int2 '4' AS true;
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SELECT int4 '1000' < int4 '999' AS false;
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SELECT 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 AS ten;
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SELECT 2 + 2 / 2 AS three;
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SELECT (2 + 2) / 2 AS two;
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-- corner case
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SELECT (-1::int4<<31)::text;
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SELECT ((-1::int4<<31)+1)::text;
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-- check sane handling of INT_MIN overflow cases
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SELECT (-2147483648)::int4 * (-1)::int4;
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SELECT (-2147483648)::int4 / (-1)::int4;
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SELECT (-2147483648)::int4 % (-1)::int4;
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SELECT (-2147483648)::int4 * (-1)::int2;
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SELECT (-2147483648)::int4 / (-1)::int2;
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SELECT (-2147483648)::int4 % (-1)::int2;
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-- check rounding when casting from float
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SELECT x, x::int4 AS int4_value
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FROM (VALUES (-2.5::float8),
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(-1.5::float8),
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(-0.5::float8),
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(0.0::float8),
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(0.5::float8),
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(1.5::float8),
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(2.5::float8)) t(x);
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-- check rounding when casting from numeric
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SELECT x, x::int4 AS int4_value
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FROM (VALUES (-2.5::numeric),
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(-1.5::numeric),
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(-0.5::numeric),
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(0.0::numeric),
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(0.5::numeric),
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(1.5::numeric),
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(2.5::numeric)) t(x);
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-- test gcd()
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SELECT a, b, gcd(a, b), gcd(a, -b), gcd(b, a), gcd(-b, a)
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FROM (VALUES (0::int4, 0::int4),
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(0::int4, 6410818::int4),
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(61866666::int4, 6410818::int4),
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(-61866666::int4, 6410818::int4),
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((-2147483648)::int4, 1::int4),
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((-2147483648)::int4, 2147483647::int4),
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((-2147483648)::int4, 1073741824::int4)) AS v(a, b);
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SELECT gcd((-2147483648)::int4, 0::int4); -- overflow
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SELECT gcd((-2147483648)::int4, (-2147483648)::int4); -- overflow
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-- test lcm()
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SELECT a, b, lcm(a, b), lcm(a, -b), lcm(b, a), lcm(-b, a)
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FROM (VALUES (0::int4, 0::int4),
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(0::int4, 42::int4),
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(42::int4, 42::int4),
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(330::int4, 462::int4),
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(-330::int4, 462::int4),
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((-2147483648)::int4, 0::int4)) AS v(a, b);
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SELECT lcm((-2147483648)::int4, 1::int4); -- overflow
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SELECT lcm(2147483647::int4, 2147483646::int4); -- overflow
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