改變一個在蜂巢表的映射表列通過HQL

Question

鍵值我有一個蜂巢表，它的模式是如下的col是map類型：

select 
    col 
from table 

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

我需要做的是改變val_1到val_2並從中創建另一個表。

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

有什麼建議嗎？謝謝！

Answer 1

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"} | 
+--------------------------------+