通过 HQL 更改 hive table 中映射列中的一个键值

change one key-value in map columns in hive table via HQL

我有一个 Hive table,其架构如下,colmap 类型:

select
    col
from table

col
{"name":"abc", "value":"val_1"}

我需要做的是将 val_1 更改为 val_2 并从中创建另一个 table。

create table table_2 as
select
    col -- TODO: need to do something here
from table

有什么建议吗?谢谢!

with t as (select map("name","abc","value","val_1") as col)
select  map("name",col["name"],"value","val_2") as col
from    t

+--------------------------------+
|              col               |
+--------------------------------+
| {"name":"abc","value":"val_2"} |
+--------------------------------+