SQL Language Reference Conditions 6 Conditions A condition specifies a combination of one or more expressions and logical (Boolean) operators and returns a value of TRUE, FALSE, or UNKNOWN. This chapter contains the following sections: About SQL Conditions Comparison Conditions Floating-Point Conditions Logical Conditions Model Conditions Multiset Conditions Pattern-matching Conditions Null Conditions XML Conditions SQL/JSON Conditions Compound Conditions BETWEEN Condition EXISTS Condition IN Condition IS OF type Condition