ARRAY_CONTAINS

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Syntax

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Scalar

array_contains(array, element)

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Arguments

• T is the array element type: BOOLEAN, TINYINT, SMALLINT, INTEGER, BIGINT, FLOAT, DOUBLE, DECIMAL(p, s), STRING, BINARY, DATE, TIME, TIMESTAMP, ARRAY, MAP or STRUCT.

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Returns

• Type: BOOLEAN
• Possible values: TRUE on a match; FALSE only when a non-NULL search finds no match and the array has no NULL element.
• NULL behavior: Returns NULL for NULL array or NULL search element. If no match is found but the array contains a NULL element, returns NULL.

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Properties

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Usage notes

• The array elements and search value are converted to a common type before comparison.
• INTEGER and INT mean the same type; STRING means VARCHAR text. NULL can be used with a supported type. Cast NULL explicitly when its type would otherwise be unclear.

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Examples

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Typical behavior

SELECT array_contains(ARRAY[1, 2, 3], 2) AS found;

SELECT array_contains(ARRAY[1, NULL, 2], 1) AS found, array_contains(ARRAY[1, NULL, 2], 3) AS "unknown";