expression - Is an expression of the exact numeric or approximate numeric data type category, except for the bit data type. ...

expression - Is an expression of the exact numeric or approximate numeric data type category, except for the bit data type. expression_precision - Is the precision to which expression is to be rounded. When expression_precision is a positive number, numeric_expression is rounded to the number of decimal positions specified by length. When expression_precision is a negative number, numeric_expression is rounded on the left side of the decimal point, as specified by expression_precision.