map_from_arrays function
Applies to: 
Databricks SQL Databricks Runtime
Creates a map with a pair of the keys and values arrays.
Syntax
map_from_arrays(keys, values)
Arguments
keys: An ARRAY expression without duplicates or NULL.values: An ARRAY expression of the same cardinality askeys
Returns
A MAP where keys are of the element type of keys and values are of the element type of values.
Examples
SQL
> SELECT map_from_arrays(array(1.0, 3.0), array('2', '4'));
{1.0 -> 2, 3.0 -> 4}