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I used PHP to look up some data from MySQL,
But I want to know the data types of these fields, what to do with them,
I don't know what this SQL is or it's not, it's possible that more than one table or field is calculated.
cannot be retrieved by checking the table field.
There is no way, this I like C #, do not manage what SQL isolated data are band type.
Ask for answers
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Mysql_field_type--Get the type of the specified field in the result set
Mysql_field_table--Gets the name of the table in which the specified field is located

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The appearance of real is because the type of a, B differs.

DOUBLE precision[(m,d)] [UNSIGNED] [Zerofill], real[(m,d)] [UNSIGNED] [Zerofill]

is a synonym for double. In addition to: if the SQL Server schema includes the Real_as_float option, Real is a synonym for float instead of a double.
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Real Real number
What's wrong with that?
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Real to Double.

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