插入clickhouse的某个字段是json，请问使用什么类型比较好处理？

CREATE TABLE test.test_local2 on cluster default_cluster (
    `id` UInt64,
    `data` Map(String, String),
) ENGINE = ReplicatedMergeTree()
partition by dt
order by id;
CREATE TABLE test.test_all2 on cluster default_cluster as test.test_local2 ENGINE = Distributed('default_cluster', 'test', 'test_local2', sipHash64(id));

select data['key'] from test.test_all2 limit 5