SQL - Boolean

1 - About

The Boolean data type in SQL follows a ternary logic

  • true
  • false
  • and unknown (Stored with a SQL Null)

In SQL, the unkown is the output of a comparisons with the NULL value where null is not equal to null

3 - String

The string key words TRUE and FALSE are the SQL-compliant string representation.

4 - Documentation / Reference


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