cardinality function

Applies to: Databricks SQL Databricks Runtime

Returns the size of expr.

Syntax

cardinality(expr)

Arguments

• expr: An ARRAY or MAP expression.

Returns

An INTEGER.

Examples

> SELECT cardinality(array('b', 'd', 'c', 'a'));
 4
> SELECT cardinality(map('a', 1, 'b', 2));
 2

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