MAP_KEYS

Description

Extract the keys of the given map into an ARRAY of the corresponding type

Syntax

MAP_KEYS(<map>)

Parameters

Parameter	Description
<map>	Input map content

Return Value

Extract the keys of the given map into an ARRAY of the corresponding type

Example

select map_keys(map()),map_keys(map(1, "100", 0.1, 2));

+-----------------+-------------------------------------------------------------------------------------------------+
| map_keys(map()) | map_keys(map(cast(1 as DECIMALV3(2, 1)), '100', cast(0.1 as DECIMALV3(2, 1)), cast(2 as TEXT))) |
+-----------------+-------------------------------------------------------------------------------------------------+
| []              | [1.0, 0.1]                                                                                      |
+-----------------+-------------------------------------------------------------------------------------------------+