75 lines
1.9 KiB
PHP
75 lines
1.9 KiB
PHP
CREATE TABLE f(f FLOAT);
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CREATE TABLE f_fix(f FLOAT(5,2));
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CREATE TABLE d(d DOUBLE);
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CREATE TABLE d_fix(d DOUBLE(5,2));
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INSERT INTO f VALUES (-3.4028234663852886e+38), (0), (3.4028234663852886e+38);
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INSERT INTO f_fix VALUES (-999.00), (0), (999.99);
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INSERT INTO d VALUES (-1.7976931348623157E+308), (0), (1.7976931348623157E+308);
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INSERT INTO d_fix VALUES (-999.00), (0), (999.99);
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ANALYZE TABLE f;
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ANALYZE TABLE f_fix;
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ANALYZE TABLE d;
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ANALYZE TABLE d_fix;
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# 65 decimal digits max in MySQL decimal type
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let $max_decimal=99999999999999999999999999999999999999999999999999999999999999999.0;
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--echo # With float we should see folding
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let $query=SELECT * FROM f WHERE f < $max_decimal;
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eval $query;
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eval EXPLAIN $query;
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--echo # With double, only type adjustment
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let $query=SELECT * FROM d WHERE d < $max_decimal;
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eval $query;
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eval EXPLAIN $query;
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let $c_1e38=100000000000000000000000000000000000000.0;
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let $c_1e39=1000000000000000000000000000000000000000.0;
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--echo # Check around max float in decimal
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let $query=SELECT * FROM f WHERE f < $c_1e38;
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eval $query;
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eval EXPLAIN $query;
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let $query=SELECT * FROM f WHERE f > $c_1e38;
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eval $query;
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eval EXPLAIN $query;
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let $query=SELECT * FROM f WHERE f < $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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let $query=SELECT * FROM f WHERE f > $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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--echo # Then compare with a DOUBLE field
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let $query=SELECT * FROM d WHERE d < $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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let $query=SELECT * FROM d WHERE d > $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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--echo Then with the two fixed real type fields, both of which
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--echo should be folded
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let $query=SELECT * FROM f_fix WHERE f < $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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let $query=SELECT * FROM f_fix WHERE f > $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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let $query=SELECT * FROM d_fix WHERE d < $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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let $query=SELECT * FROM d_fix WHERE d > $c_1e39;
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eval $query;
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eval EXPLAIN $query;
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DROP TABLE f, f_fix, d, d_fix;
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