Language Reference Guide > Language Reference Guide > Language Elements > Predicates in SQL > IN Predicate
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IN Predicate
The following table explains the operators IN and NOT IN:
Operator
Meaning
y IN (x, ..., z)
The IN predicate returns true if y is equal to one of the values in the list (x, ..., z).
(x, ..., z) represents a list of expressions, each of which must evaluate to a single value. If there is only one expression in the list, the parentheses are optional. None of the expressions (y, x, or z) can be subqueries.
y NOT IN (x, ..., z)
Returns true if y is not equal to any of the values in the list (x, ..., z).
(x, ..., z) is a list of expressions, each of which must evaluate to a single value. If there is only one expression in the list, the parentheses are optional. None of the expressions (y, x, or z) can be subqueries.
y IN (subquery)
Returns true if y is equal to one of the values returned by the subquery. The subquery must be parenthesized and can reference only one column in its SELECT clause.
y NOT IN (subquery)
Returns true if y is not equal to any of the values returned by the subquery. The subquery must be specified in parentheses and can reference only one column in its SELECT clause.
Last modified date: 12/20/2023