GNU Info

(mysql.info)Number syntax

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Numbers
.......

Integers are represented as a sequence of digits. Floats use `.' as a
decimal separator.  Either type of number may be preceded by `-' to
indicate a negative value.

Examples of valid integers:

     1221
     0
     -32

Examples of valid floating-point numbers:

     294.42
     -32032.6809e+10
     148.00

An integer may be used in a floating-point context; it is interpreted
as the equivalent floating-point number.