Question

在Hive中，我有一个包含两列的表： uid （这是一个字符串）和 attr （这是一个地图）。

地图列包含联系人和联系人的键，两者的值均为 18511111111 18522222222 185211111 等字符串。我想得到下表：

uid phone

我尝试了以下sql：

select
  uid,
  phone
from
  onetalbe
lateral view explode(split(attr['contacts'], ' ')) t1 as phone
lateral view explode(split(attr['contact'], ' ')) t2 as phone
where
  length(phone)==11 and phone like '1%'

但是我得到了错误：

java.sql.SQLException: Error while compiling statement: FAILED: SemanticException Column phone Found in more than One Tables/Subqueries at org.apache.hive.jdbc

那么有没有办法实现这个目标？提前谢谢。

Answer 1

 Actually there are 2 columns regarding phone, so it is giving error.  


   select uid, t1phone, t2phone
   from onetalbe 
   lateral view explode(split(attr['contacts'], ' ')) t1 as t1phone
   lateral view explode(split(attr['contact'], ' ')) t2 as t2phone 
   where length(phone)==11 and t1phone like '1%' and t2phone  like '1%'

或

    select uid, phone
       from onetalbe 
       lateral view explode(split(attr['contacts'], ' ')) t1 as phone
       where length(phone)==11 and phone like '1%' 
UNION ALL
       select uid, phone
       from onetalbe 
       lateral view explode(split(attr['contact'], ' ')) t1 as phone
       where length(phone)==11 and phone like '1%'

侧视图列可以具有相同的名称吗？

1 个答案: