Some SQL dialects prefer to call this type NUMERIC, and others also include a MONEY data type, which is defined as a decimal number with two places to the right of the decimal.
一些SQL语言喜欢称此类型为NUMERIC类型，其它一些SQL语言则引入了MONEY数据类型，MONEY数据类型被定义为小数点右侧带有两位的小数。
By default, the scale for a DECIMAL type is 0, which means the DECIMAL data type mimics an integer type.
默认情况下，decimal类型的刻度为0，这意味着DECIMAL数据类型模拟了整数类型。
SQL-92 includes a decimal data type, which is an exact numeric type for representing fixed point decimal Numbers and performs basic arithmetic operation on decimal Numbers.
SQL - 92包括DECIMAL数据类型，它是用于表示定点小数的精确数字类型，它可以对小数进行基本的算术运算。
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