map_keys function

  • Article

Applies to: check marked yes Databricks SQL check marked yes Databricks Runtime

Returns an unordered array containing the keys of map.

Syntax

map_keys(map)

Arguments

  • map: A MAP expression.

Returns

An ARRAY where the element type matches the map key type.

Examples

> SELECT map_keys(map(1, 'a', 2, 'b'));
 [1,2]