How to use MySQL DECIMAL?

Suppose that your column is set to be DECIMAL(13,4). This means that the column will have a total size of 13 digits where 4 of these will be used for precision representation. The declaration syntax for a DECIMAL column is DECIMAL(M,D). The ranges of values for the arguments are as follows: M is the maximum number of digits (the precision). It has a range of 1 to 65. D is the number of digits to the right of the decimal point (the scale). It has a range of 0 to 30 and must be no larger than M.  DECIMAL columns...