1997-04-05 13:24:54 +02:00
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QUERY: CREATE TABLE FLOAT8_TBL(f1 float8);
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('0.0');
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('1004.30');
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('-34.84');
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e+200');
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e-200');
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('10e400');
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WARN: Bad float8 input format
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e400');
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WARN: Bad float8 input format
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('10e-400');
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WARN: Bad float8 input format
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QUERY: INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e-400');
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WARN: Bad float8 input format
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QUERY: SELECT '' AS five, FLOAT8_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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|1.2345678901234e+200
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|1.2345678901234e-200
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(5 rows)
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QUERY: SELECT '' AS four, f.* FROM FLOAT8_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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|1.2345678901234e+200
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|1.2345678901234e-200
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(4 rows)
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QUERY: SELECT '' AS one, f.* FROM FLOAT8_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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QUERY: SELECT '' AS three, f.* FROM FLOAT8_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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|1.2345678901234e-200
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(3 rows)
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QUERY: SELECT '' AS three, f.* FROM FLOAT8_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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|1.2345678901234e-200
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(3 rows)
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QUERY: SELECT '' AS four, f.* FROM FLOAT8_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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|1.2345678901234e-200
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(4 rows)
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QUERY: SELECT '' AS four, f.* FROM FLOAT8_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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|1.2345678901234e-200
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(4 rows)
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QUERY: SELECT '' AS three, f.f1, f.f1 * '-10' AS x
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FROM FLOAT8_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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|1.2345678901234e+200|-1.2345678901234e+201
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|1.2345678901234e-200|-1.2345678901234e-199
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(3 rows)
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QUERY: SELECT '' AS three, f.f1, f.f1 + '-10' AS x
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FROM FLOAT8_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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|1.2345678901234e+200|1.2345678901234e+200
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|1.2345678901234e-200|-10
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(3 rows)
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QUERY: SELECT '' AS three, f.f1, f.f1 / '-10' AS x
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FROM FLOAT8_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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|1.2345678901234e+200|-1.2345678901234e+199
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|1.2345678901234e-200|-1.2345678901234e-201
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(3 rows)
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QUERY: SELECT '' AS three, f.f1, f.f1 - '-10' AS x
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FROM FLOAT8_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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|1.2345678901234e+200|1.2345678901234e+200
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|1.2345678901234e-200|10
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(3 rows)
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QUERY: SELECT '' AS one, f.f1 ^ '2.0' AS square_f1
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FROM FLOAT8_TBL f where f.f1 = '1004.3';
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one| square_f1
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---+----------
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|1008618.49
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(1 row)
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QUERY: SELECT '' AS five, f.f1, @f.f1 AS abs_f1
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FROM FLOAT8_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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|1.2345678901234e+200|1.2345678901234e+200
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|1.2345678901234e-200|1.2345678901234e-200
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(5 rows)
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QUERY: SELECT '' AS five, f.f1, %f.f1 AS trunc_f1
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FROM FLOAT8_TBL f;
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five|f1 |trunc_f1
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----+--------------------+--------------------
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|0 |0
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|1004.3 |1004
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|-34.84 |-34
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|1.2345678901234e+200|1.2345678901234e+200
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|1.2345678901234e-200|0
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(5 rows)
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QUERY: SELECT '' AS five, f.f1, f.f1 % AS round_f1
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FROM FLOAT8_TBL f;
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five|f1 |round_f1
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----+--------------------+--------------------
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|0 |0
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|1004.3 |1004
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|-34.84 |-35
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|1.2345678901234e+200|1.2345678901234e+200
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|1.2345678901234e-200|0
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(5 rows)
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QUERY: SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1
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FROM FLOAT8_TBL f
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WHERE f.f1 > '0.0';
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three|f1 |sqrt_f1
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-----+--------------------+---------------------
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|1004.3 |31.6906926399535
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|1.2345678901234e+200|1.11111110611109e+100
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|1.2345678901234e-200|1.11111110611109e-100
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(3 rows)
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QUERY: SELECT '' AS three, f.f1, : ( ; f.f1) AS exp_ln_f1
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FROM FLOAT8_TBL f
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WHERE f.f1 > '0.0';
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three|f1 |exp_ln_f1
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-----+--------------------+---------------------
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|1004.3 |1004.3
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|1.2345678901234e+200|1.23456789012338e+200
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|1.2345678901234e-200|1.23456789012339e-200
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(3 rows)
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QUERY: SELECT '' AS five, f.f1, ||/f.f1 AS cbrt_f1 FROM FLOAT8_TBL f;
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five|f1 |cbrt_f1
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----+--------------------+--------------------
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|0 |0
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|1004.3 |10.014312837827
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|-34.84 |-3.26607421344208
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|1.2345678901234e+200|4.97933859234765e+66
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|1.2345678901234e-200|2.3112042409018e-67
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(5 rows)
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QUERY: SELECT '' AS five, FLOAT8_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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|1.2345678901234e+200
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|1.2345678901234e-200
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(5 rows)
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QUERY: UPDATE FLOAT8_TBL
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SET f1 = FLOAT8_TBL.f1 * '-1'
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WHERE FLOAT8_TBL.f1 > '0.0';
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QUERY: SELECT '' AS bad, f.f1 * '1e200' from FLOAT8_TBL f;
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WARN: Bad float8 input format -- overflow
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QUERY: SELECT '' AS bad, f.f1 ^ '1e200' from FLOAT8_TBL f;
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WARN: Bad float8 input format -- overflow
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QUERY: SELECT '' AS bad, (; (f.f1)) from FLOAT8_TBL f where f.f1 = '0.0' ;
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WARN:can't take log of 0!
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QUERY: SELECT '' AS bad, (; (f.f1)) from FLOAT8_TBL f where f.f1 < '0.0' ;
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WARN:can't take log of a negative number
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QUERY: SELECT '' AS bad, : (f.f1) from FLOAT8_TBL f;
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1997-06-01 04:30:25 +02:00
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bad| ?column?
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---+--------------------
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| 1
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|7.39912306090513e-16
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| 0
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| 0
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| 1
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(5 rows)
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1997-04-05 13:24:54 +02:00
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QUERY: SELECT '' AS bad, f.f1 / '0.0' from FLOAT8_TBL f;
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WARN:float8div: divide by 0.0 error
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QUERY: SELECT '' AS five, FLOAT8_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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|-1.2345678901234e+200
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|-1.2345678901234e-200
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(5 rows)
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