The Ultimate Guide to High Availability with MariaDB

XOR

Syntax

XOR

Contents

  1. Syntax
  2. Description
  3. Examples

Description

XOR stands for eXclusive OR. Returns NULL if either operand is NULL. For non-NULL operands, evaluates to 1 if an odd number of operands is non-zero, otherwise 0 is returned.

Examples

SELECT 1 XOR 1;
+---------+
| 1 XOR 1 |
+---------+
|       0 |
+---------+

SELECT 1 XOR 0;
+---------+
| 1 XOR 0 |
+---------+
|       1 |
+---------+

SELECT 1 XOR NULL;
+------------+
| 1 XOR NULL |
+------------+
|       NULL |
+------------+

In the following example, the right 1 XOR 1 is evaluated first, and returns 0. Then, 1 XOR 0 is evaluated, and 1 is returned.

SELECT 1 XOR 1 XOR 1;
+---------------+
| 1 XOR 1 XOR 1 |
+---------------+
|             1 |
+---------------+

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