Arithmetic Operators Overview

The usual arithmetic operators are available. The result is determined according to the following rules:

• In the case of -, +, and *, the result is calculated with BIGINT (64-bit) precision if both operands are integers.

• If both operands are integers and any of them are unsigned, the result is an unsigned integer.

• If any of the operands of a +,-, /, *, % is a real or string value, the precision of the result is the precision of the operand with the maximum precision.

In division performed with /, the scale of the result when using two exact-value operands is the scale of the first operand plus the value of the div_precision_increment system variable. For example, the result of the expression 5.05 / 0.014 has a scale of 13 decimal places (360.7142857142857).

These rules are applied for each operation, such that nested calculations imply the precision of each component. Hence, (14620 / 9432456) / (24250 / 9432456), resolves first to (0.0014) / (0.0026), with the final result having 16 decimal places (0.6028865979381443).

Constraints

• Arithmetic operators only apply to numbers.
• To ensure that components and subcomponents of a calculation use the appropriate level of precision. See Cast Functions and Operators.