SQL BIT Data Type

By: Kris Wenzel   |   Updated: March 6, 2022  
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Use the SQL BIT data type to define columns, variables, and parameters value of 1, 0, or NULL. 

Given their Yes/No nature, designer us the BIT type with flag and indicator columns: 

SQL Bit Type used as Flag (true or falsue) values.

Converting BIT Values 

The string values TRUE and FALSE convert to BIT:  TRUE is converted to 1 and FALSE to 0. 

Converting any non-zero value promotes BIT to 1. 


Here is SQL to query all employees receiving a salary: 

Additional Resources 

To learn more about data types, check out these useful resources: 

{"email":"Email address invalid","url":"Website address invalid","required":"Required field missing"}