drop table if exists t;

create table t engine Memory as select * from generateRandom('a Array(Int8), b UInt32, c Nullable(String), d Decimal32(4), e Nullable(Enum16(\'h\' = 1, \'w\' = 5 , \'o\' = -200)), f Float64, g Tuple(Date, DateTime, DateTime64, UUID), h FixedString(2), i Array(Nullable(UUID))', 10, 5, 3) limit 2;

select * apply toJSONString from t;

drop table t;

set allow_experimental_map_type = 1;
select toJSONString(map('1234', '5678'));