Hive [错误10025]表达式不在GROUP BY中

第一个查询正常。但第二个查询发出错误“[Error 10025]表达式不在GROUP BY键'-3''”中。我阅读了相关文章，到目前为止我不确定如何解决这个错误。Hive [错误10025]表达式不在GROUP BY中

非常感谢您对此的帮助。

查询＃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'

查询＃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''

来源

2017-03-08 L.Liu

所以不需要group by你是不是在第一查询聚合。在第二个查询group by 1被视为常量。改为使用group by case when user_id = '-3' then cast(order_id as varchar(255)) else user_id end。

或者，如果你希望能够通过位置而不是按名称引用列名，那么你的查询之前尝试这个办法：

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

来源

2017-03-08 18:18:58 leftjoin

谢谢。我想我已经尝试了使用你所建议的语法的组，并得到类似的错误。但我只是试了一遍，它运行良好。所以问题解决了。再次感谢！ –

那么，你对我的回答满意吗？那么请投票或接受或建议我怎样才能改善答案。 – leftjoin

是的，满意答案。刚刚投票有用。我猜这个0没有改变，直到选票达到一定的门槛？再次感谢！ –

Hive [错误10025]表达式不在GROUP BY中

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