在多个表中发现列错误答案

【问题标题】：Column found in more than one table error在多个表中发现列错误
【发布时间】：2019-08-16 19:33:45
【问题描述】：

我收到以下错误

编译语句时出错：
FAILED: SemanticException Column episodeid 在多个表/子查询中发现 [SQL State=42000, DB Errorcode=40000]

有人可以帮我重新配置吗？

谢谢！

这是有问题的代码：

select 
    papid, count(distinct episodeid) as epicount, 
    episovcountcesarean, sum(episovspendcesarean), 
    count(claimnumber) as claimcount, 
    sum(allowedamount) as spend
from
    3pdcoe_tc_dm_eoc_nep_peri.star_output_episodes e
join 
    3pdcoe_tc_dm_eoc_nep_peri.dbo_claimpatientservice cps on cps.episodeidd = e.episodeid
join 
    3pdcoe_tc_dm_eoc_nep_peri.star_output_aggregate a on a.episodeid = e.episodeid
where 
    aggtype = 'Window' and agggroup = 'Trigger'
    and eeany = 0 
    and year(episodeend) = '2016' 
    and episovcountcesarean = 1
group by 
    papid, episovcountcesarean, episovspendcesarean;

【问题讨论】：

在此处限定episodeid 列：count(distinct episodeid) 与表格，cps.episodeid 或a.episodeid 或e.episodeid
列 episovspendcesarean 需要从 group by 子句中删除。

标签： sql hive

【解决方案1】：

在您的选择列表中，您必须指定您的目标表

select 
  papid, count(distinct a.episodeid) as epicount, 
  episovcountcesarean, sum(episovspendcesarean), 
  count(claimnumber) as claimcount, 
  sum(allowedamount) as spend

或

select 
  papid, count(distinct e.episodeid) as epicount, 
  episovcountcesarean, sum(episovspendcesarean), 
  count(claimnumber) as claimcount, 
  sum(allowedamount) as spend

【讨论】：