# 14.7. Decimal Functions and Operators

## Decimal Literals

Use DECIMAL 'xxxxxxx.yyyyyyy' syntax to define literal of DECIMAL type.

The precision of DECIMAL type for literal will be equal to number of digits in literal (including trailing and leading zeros). The scale will be equal to number of digits in fractional part (including trailing zeros).

Example literal Data type
DECIMAL '0' DECIMAL(1)
DECIMAL '12345' DECIMAL(5)
DECIMAL '0000012345.1234500000' DECIMAL(20, 10)

## Binary Arithmetic Decimal Operators

Standard mathematical operators are supported. The table below explains precision and scale calculation rules for result. Assuming x is of type DECIMAL(xp, xs) and y is of type DECIMAL(yp, ys).
 Operation Result type precision Result type scale x + y and x - y ```min(38, 1 + min(xs, ys) + min(xp - xs, yp - ys) ) ``` max(xs, ys) x * y min(38, xp + yp) xs + ys x / y ```min(38, xp + ys + max(0, ys-xs) ) ``` max(xs, ys) x % y ```min(xp - xs, yp - ys) + max(xs, bs) ``` max(xs, ys)
Arithmetic operators will fail in runtime if actual result does not fit result type.

## Comparison Operators

All standard comparison operators and BETWEEN operator work for DECIMAL type.

## Unary Decimal Operators

The - operator performs negation. The type of result is same as type of argument.