260 lines
6.9 KiB
Plaintext
260 lines
6.9 KiB
Plaintext
--
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-- FLOAT4
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--
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CREATE TABLE FLOAT4_TBL (f1 float4);
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INSERT INTO FLOAT4_TBL(f1) VALUES (' 0.0');
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INSERT INTO FLOAT4_TBL(f1) VALUES ('1004.30 ');
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INSERT INTO FLOAT4_TBL(f1) VALUES (' -34.84 ');
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INSERT INTO FLOAT4_TBL(f1) VALUES ('1.2345678901234e+20');
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INSERT INTO FLOAT4_TBL(f1) VALUES ('1.2345678901234e-20');
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-- test for over and under flow
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INSERT INTO FLOAT4_TBL(f1) VALUES ('10e70');
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ERROR: value out of range: overflow
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('10e70');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e70');
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ERROR: value out of range: overflow
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e70');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('10e-70');
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ERROR: value out of range: underflow
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('10e-70');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e-70');
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ERROR: value out of range: underflow
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('-10e-70');
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^
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-- bad input
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INSERT INTO FLOAT4_TBL(f1) VALUES ('');
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ERROR: invalid input syntax for type real: ""
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES (' ');
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ERROR: invalid input syntax for type real: " "
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES (' ');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('xyz');
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ERROR: invalid input syntax for type real: "xyz"
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('xyz');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('5.0.0');
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ERROR: invalid input syntax for type real: "5.0.0"
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('5.0.0');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('5 . 0');
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ERROR: invalid input syntax for type real: "5 . 0"
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('5 . 0');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('5. 0');
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ERROR: invalid input syntax for type real: "5. 0"
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('5. 0');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES (' - 3.0');
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ERROR: invalid input syntax for type real: " - 3.0"
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES (' - 3.0');
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^
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INSERT INTO FLOAT4_TBL(f1) VALUES ('123 5');
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ERROR: invalid input syntax for type real: "123 5"
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LINE 1: INSERT INTO FLOAT4_TBL(f1) VALUES ('123 5');
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^
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-- special inputs
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SELECT 'NaN'::float4;
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float4
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--------
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NaN
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(1 row)
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SELECT 'nan'::float4;
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float4
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--------
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NaN
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(1 row)
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SELECT ' NAN '::float4;
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float4
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--------
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NaN
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(1 row)
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SELECT 'infinity'::float4;
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float4
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----------
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Infinity
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(1 row)
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SELECT ' -INFINiTY '::float4;
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float4
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-----------
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-Infinity
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(1 row)
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-- bad special inputs
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SELECT 'N A N'::float4;
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ERROR: invalid input syntax for type real: "N A N"
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LINE 1: SELECT 'N A N'::float4;
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^
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SELECT 'NaN x'::float4;
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ERROR: invalid input syntax for type real: "NaN x"
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LINE 1: SELECT 'NaN x'::float4;
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^
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SELECT ' INFINITY x'::float4;
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ERROR: invalid input syntax for type real: " INFINITY x"
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LINE 1: SELECT ' INFINITY x'::float4;
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^
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SELECT 'Infinity'::float4 + 100.0;
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?column?
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----------
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Infinity
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(1 row)
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SELECT 'Infinity'::float4 / 'Infinity'::float4;
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?column?
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----------
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NaN
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(1 row)
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SELECT 'nan'::float4 / 'nan'::float4;
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?column?
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----------
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NaN
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(1 row)
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SELECT 'nan'::numeric::float4;
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float4
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--------
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NaN
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(1 row)
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SELECT '' AS five, * FROM FLOAT4_TBL;
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five | f1
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------+-------------
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| 0
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| 1004.3
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| -34.84
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| 1.23457e+20
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| 1.23457e-20
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(5 rows)
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SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE f.f1 <> '1004.3';
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four | f1
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------+-------------
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| 0
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| -34.84
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| 1.23457e+20
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| 1.23457e-20
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(4 rows)
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SELECT '' AS one, f.* FROM FLOAT4_TBL f WHERE f.f1 = '1004.3';
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one | f1
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-----+--------
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| 1004.3
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(1 row)
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SELECT '' AS three, f.* FROM FLOAT4_TBL f WHERE '1004.3' > f.f1;
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three | f1
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-------+-------------
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| 0
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| -34.84
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| 1.23457e-20
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(3 rows)
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SELECT '' AS three, f.* FROM FLOAT4_TBL f WHERE f.f1 < '1004.3';
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three | f1
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-------+-------------
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| 0
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| -34.84
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| 1.23457e-20
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(3 rows)
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SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE '1004.3' >= f.f1;
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four | f1
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------+-------------
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| 0
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| 1004.3
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| -34.84
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| 1.23457e-20
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(4 rows)
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SELECT '' AS four, f.* FROM FLOAT4_TBL f WHERE f.f1 <= '1004.3';
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four | f1
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------+-------------
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| 0
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| 1004.3
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| -34.84
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| 1.23457e-20
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(4 rows)
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SELECT '' AS three, f.f1, f.f1 * '-10' AS x FROM FLOAT4_TBL f
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WHERE f.f1 > '0.0';
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three | f1 | x
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-------+-------------+--------------
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| 1004.3 | -10043
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| 1.23457e+20 | -1.23457e+21
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| 1.23457e-20 | -1.23457e-19
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(3 rows)
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SELECT '' AS three, f.f1, f.f1 + '-10' AS x FROM FLOAT4_TBL f
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WHERE f.f1 > '0.0';
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three | f1 | x
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-------+-------------+-------------
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| 1004.3 | 994.3
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| 1.23457e+20 | 1.23457e+20
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| 1.23457e-20 | -10
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(3 rows)
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SELECT '' AS three, f.f1, f.f1 / '-10' AS x FROM FLOAT4_TBL f
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WHERE f.f1 > '0.0';
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three | f1 | x
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-------+-------------+--------------
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| 1004.3 | -100.43
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| 1.23457e+20 | -1.23457e+19
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| 1.23457e-20 | -1.23457e-21
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(3 rows)
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SELECT '' AS three, f.f1, f.f1 - '-10' AS x FROM FLOAT4_TBL f
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WHERE f.f1 > '0.0';
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three | f1 | x
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-------+-------------+-------------
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| 1004.3 | 1014.3
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| 1.23457e+20 | 1.23457e+20
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| 1.23457e-20 | 10
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(3 rows)
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-- test divide by zero
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SELECT '' AS bad, f.f1 / '0.0' from FLOAT4_TBL f;
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ERROR: division by zero
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SELECT '' AS five, * FROM FLOAT4_TBL;
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five | f1
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------+-------------
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| 0
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| 1004.3
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| -34.84
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| 1.23457e+20
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| 1.23457e-20
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(5 rows)
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-- test the unary float4abs operator
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SELECT '' AS five, f.f1, @f.f1 AS abs_f1 FROM FLOAT4_TBL f;
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five | f1 | abs_f1
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------+-------------+-------------
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| 0 | 0
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| 1004.3 | 1004.3
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| -34.84 | 34.84
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| 1.23457e+20 | 1.23457e+20
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| 1.23457e-20 | 1.23457e-20
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(5 rows)
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UPDATE FLOAT4_TBL
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SET f1 = FLOAT4_TBL.f1 * '-1'
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WHERE FLOAT4_TBL.f1 > '0.0';
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SELECT '' AS five, * FROM FLOAT4_TBL;
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five | f1
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------+--------------
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| 0
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| -34.84
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| -1004.3
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| -1.23457e+20
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| -1.23457e-20
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(5 rows)
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