USING EXTERNAL FUNCTION cell_addresses_to_multi_polygon(h3array ARRAY(VARCHAR), geojson BOOLEAN)
RETURNS VARCHAR
LAMBDA '<ARN>'
SELECT ST_GeometryFromText(cell_addresses_to_multi_polygon( 
 ARRAY['883960185bfffff',
 '8839601a81fffff',
 '8839601a85fffff',
 '8839601a87fffff',
 '8839601a89fffff',
 '8839601a8dfffff',
 '8839601aa1fffff',
 '8839601aa9fffff',
 '8839601aabfffff',
 '8839601aadfffff',
 '8839601ac5fffff',
 '8839601ac7fffff',
 '8839601ae1fffff',
 '8839601ae3fffff',
 '8839601ae5fffff',
 '8839601ae7fffff',
 '8839601ae9fffff',
 '8839601aebfffff',
 '8839601aedfffff',
 '883969ab21fffff',
 '883969ab23fffff',
 '883969ab25fffff',
 '883969ab27fffff',
 '883969ab29fffff',
 '883969ab2bfffff',
 '883969ab2dfffff'], TRUE)) as multipolygon