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AND BETWEEN BINARY CASE DIV IN IS IS NOT IS NOT NULL IS NULL LIKE NOT NOT BETWEEN NOT IN NOT LIKE NOT REGEXP OR REGEX RLIKE SOUNDS LIKE XOR

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MySQL | IS

schedule Aug 10, 2023

Last updated

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MySQL

Syntax


        
        
            
                
                
                    SELECT value IS TRUE | FALSE | UNKNOWN;

Example

To check whether 'test' is TRUE:


        
        
            
                
                
                    SELECT 'test' IS TRUE;
                
            
            +----------------+
| 'test' IS TRUE |
+----------------+
|              0 |
+----------------+

To check whether 1 is TRUE:


        
        
            
                
                
                    SELECT 1 IS TRUE;
                
            
            +-----------+
| 1 IS TRUE |
+-----------+
|         1 |
+-----------+

To check whether NULL is UNKNOWN:


        
        
            
                
                
                    SELECT NULL IS UNKNOWN;
                
            
            +-----------------+
| NULL IS UNKNOWN |
+-----------------+
|               1 |
+-----------------+

Published by Arthur Yanagisawa

Edited by 0 others

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Official MySQL Documentation

https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html#operator_is

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