Arithmetic operators

Arithmetic operators perform mathematical operations on numeric values (including timestamps):

Operator Description
+ Add one number to another
- Subtract the second number from the first
* Multiply the first number with the second
/ Divide the first number by the second
% Finds the remainder of division of one number by another

Here’s an example that uses all of the available arithmetic operators:

cr> select ((2 * 4.0 - 2 + 1) / 2) % 3 AS n;
+-----+
|   n |
+-----+
| 0.5 |
+-----+
SELECT 1 row in set (... sec)

Arithmetic operators always return the data type of the argument with the higher precision.

In the case of devision, if both arguments are integers, the result will also be an integer with the fractional part truncated:

cr> select 5 / 2 AS a,  5 / 2.0 AS b;
+---+-----+
| a |   b |
+---+-----+
| 2 | 2.5 |
+---+-----+
SELECT 1 row in set (... sec)

Note

The same restrictions that apply to scalar functions also apply to arithmetic operators.

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