115 lines
3.2 KiB
SQL
115 lines
3.2 KiB
SQL
--
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-- INT2
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--
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CREATE TABLE INT2_TBL(f1 int2);
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INSERT INTO INT2_TBL(f1) VALUES ('0 ');
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INSERT INTO INT2_TBL(f1) VALUES (' 1234 ');
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INSERT INTO INT2_TBL(f1) VALUES (' -1234');
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INSERT INTO INT2_TBL(f1) VALUES ('34.5');
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-- largest and smallest values
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INSERT INTO INT2_TBL(f1) VALUES ('32767');
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INSERT INTO INT2_TBL(f1) VALUES ('-32767');
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-- bad input values -- should give errors
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INSERT INTO INT2_TBL(f1) VALUES ('100000');
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INSERT INTO INT2_TBL(f1) VALUES ('asdf');
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INSERT INTO INT2_TBL(f1) VALUES (' ');
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INSERT INTO INT2_TBL(f1) VALUES ('- 1234');
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INSERT INTO INT2_TBL(f1) VALUES ('4 444');
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INSERT INTO INT2_TBL(f1) VALUES ('123 dt');
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INSERT INTO INT2_TBL(f1) VALUES ('');
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SELECT '' AS five, * FROM INT2_TBL;
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SELECT '' AS four, i.* FROM INT2_TBL i WHERE i.f1 <> int2 '0';
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SELECT '' AS four, i.* FROM INT2_TBL i WHERE i.f1 <> int4 '0';
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SELECT '' AS one, i.* FROM INT2_TBL i WHERE i.f1 = int2 '0';
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SELECT '' AS one, i.* FROM INT2_TBL i WHERE i.f1 = int4 '0';
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SELECT '' AS two, i.* FROM INT2_TBL i WHERE i.f1 < int2 '0';
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SELECT '' AS two, i.* FROM INT2_TBL i WHERE i.f1 < int4 '0';
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SELECT '' AS three, i.* FROM INT2_TBL i WHERE i.f1 <= int2 '0';
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SELECT '' AS three, i.* FROM INT2_TBL i WHERE i.f1 <= int4 '0';
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SELECT '' AS two, i.* FROM INT2_TBL i WHERE i.f1 > int2 '0';
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SELECT '' AS two, i.* FROM INT2_TBL i WHERE i.f1 > int4 '0';
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SELECT '' AS three, i.* FROM INT2_TBL i WHERE i.f1 >= int2 '0';
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SELECT '' AS three, i.* FROM INT2_TBL i WHERE i.f1 >= int4 '0';
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-- positive odds
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SELECT '' AS one, i.* FROM INT2_TBL i WHERE (i.f1 % int2 '2') = int2 '1';
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-- any evens
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SELECT '' AS three, i.* FROM INT2_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 INT2_TBL i;
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SELECT '' AS five, i.f1, i.f1 * int2 '2' AS x FROM INT2_TBL i
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WHERE abs(f1) < 16384;
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SELECT '' AS five, i.f1, i.f1 * int4 '2' AS x FROM INT2_TBL i;
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SELECT '' AS five, i.f1, i.f1 + int2 '2' AS x FROM INT2_TBL i;
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SELECT '' AS five, i.f1, i.f1 + int2 '2' AS x FROM INT2_TBL i
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WHERE f1 < 32766;
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SELECT '' AS five, i.f1, i.f1 + int4 '2' AS x FROM INT2_TBL i;
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SELECT '' AS five, i.f1, i.f1 - int2 '2' AS x FROM INT2_TBL i;
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SELECT '' AS five, i.f1, i.f1 - int2 '2' AS x FROM INT2_TBL i
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WHERE f1 > -32767;
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SELECT '' AS five, i.f1, i.f1 - int4 '2' AS x FROM INT2_TBL i;
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SELECT '' AS five, i.f1, i.f1 / int2 '2' AS x FROM INT2_TBL i;
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SELECT '' AS five, i.f1, i.f1 / int4 '2' AS x FROM INT2_TBL i;
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-- corner cases
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SELECT (-1::int2<<15)::text;
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SELECT ((-1::int2<<15)+1::int2)::text;
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-- check sane handling of INT16_MIN overflow cases
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SELECT (-32768)::int2 * (-1)::int2;
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SELECT (-32768)::int2 / (-1)::int2;
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SELECT (-32768)::int2 % (-1)::int2;
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-- check rounding when casting from float
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SELECT x, x::int2 AS int2_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::int2 AS int2_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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