map_keys function

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]

Related functions

• map function

• map_concat function

• map_contains_key function

• map_entries function

• map_filter function

• map_from_arrays function

• map_from_entries function

• map_values function

• map_zip_with function