对于Hive上的sparksql，当我使用 named_struct 在查询中，它返回结果：

SELECT id, collect_set(emp_info) as employee_info
FROM
    (
     SELECT t.id, named_struct("name", t.emp_name, "dept", t.emp_dept) AS emp_info
     FROM mytable t
    ) a
GROUP BY id

但当我换了 named_struct 与 map ，我得到一个错误：

SELECT id, collect_set(emp_info) as employee_info
FROM
    (
     SELECT t.id, map("name", t.emp_name, "dept", t.emp_dept) AS emp_info
     FROM mytable t
    ) a
GROUP BY id

ERROR yarn.ApplicationMaster: User class threw exception: org.apache.spark.sql.AnalysisException: cannot resolve 'collect_set(a.`emp_info`)' due to data type mismatch: collect_set() cannot have map type data; line 36 pos 27;
'Distinct

我想还一张Map name 以及 dept ，如何与 collect_set ? 仅供参考：此查询包含 map 在配置单元中运行而没有问题（色调）