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IS_ARRAY function - Amazon Redshift

Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the blog post that was published on June 30, 2025.

IS_ARRAY function

Checks whether a variable is an array. The function returns true if the variable is an array. The function also includes empty arrays. Otherwise, the function returns false for all other values, including null.

Syntax

IS_ARRAY(super_expression)

Arguments

super_expression

A SUPER expression or column.

Return type

BOOLEAN

Examples

To check if [1,2] is an array using the IS_ARRAY function, use the following example.

SELECT IS_ARRAY(JSON_PARSE('[1,2]')); +----------+ | is_array | +----------+ | true | +----------+