Hive [錯誤10025]表達式不在GROUP BY中

Question

第一個查詢正常。但第二個查詢發出錯誤「[Error 10025]表達式不在GROUP BY鍵'-3''」中。我閱讀了相關文章，到目前爲止我不確定如何解決這個錯誤。

非常感謝您對此的幫助。

查詢＃1

SELECT case when user_id = '-3' then cast(order_id as varchar(255)) else user_id end as user_id2 
from orders 
where user_id = '-3' 

查詢＃2

SELECT case when user_id = '-3' then cast(order_id as varchar(255)) else user_id end as user_id2 
     ,sum(order_value) as sales 
from orders 
group by 1 


Traceback (most recent call last): 
File "/home/net1/liulu001/conversant/troubleshooting_userid.py", line 28, in <module> 
cursor.execute(q) 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 302, in execute 
configuration=configuration) 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 343, in execute_async 
self._execute_async(op) 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 362, in _execute_async 
operation_fn() 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 340, in op 
async=True) 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 1027, in execute 
return self._operation('ExecuteStatement', req) 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 957, in _operation 
resp = self._rpc(kind, request) 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 925, in _rpc 
err_if_rpc_not_ok(response) 
File "/home/net1/liulu001/.local/lib/python2.6/site-packages/impala/hiveserver2.py", line 704, in err_if_rpc_not_ok 
raise HiveServer2Error(resp.status.errorMessage) 
impala.error.HiveServer2Error: Error while compiling statement: FAILED:  SemanticException [Error 10025]: Line 3:13 Expression not in GROUP BY key ''-3'' 

Answer 1

所以不需要group by你是不是在第一查詢聚合。 在第二個查詢group by 1被視爲常量。改爲使用group by case when user_id = '-3' then cast(order_id as varchar(255)) else user_id end。

或者，如果你希望能夠通過位置而不是按名稱引用列名，那麼你的查詢之前嘗試這個辦法：

set hive.groupby.orderby.position.alias=true;