将mysql查询转换为sql server时出错

Question

我正在努力将 mysql 查询转换为 sql 查询，但是我遇到了错误，我对 sql server 了解不多，在这里我发布了我的两个查询，谁能帮我解决这个问题查询，我收到错误

Each GROUP BY expression must contain at least one column that is not an outer reference.

Mysql 查询（在 mysql 服务器中工作正常）：

SELECT 'Ending Episodes' as display_name, MonthEnd as MonthStart, MonthEnd as MonthEnd, AVG(FullHHRG) as FullHHRG, 
AVG(LUPAAdj) as LUPAAdj, AVG(OutlierAdd) as OutlierAdd, AVG(UpDownCode) as UpDownCode, AVG(Sequester) as Sequester, 
AVG(NetHHRG) as NetHHRG, count(tb_Episode.id) as total 
FROM tb_Episode 
WHERE EpEnd is not null AND EpEnd >= '01-01-01' AND EpEnd < '01-01-01' AND tb_Episode.CustID = '27' 
GROUP BY display_name, MonthEnd ORDER BY tb_Episode.MonthEnd asc

转换后的 SQL 查询（出现错误）

SELECT 'EndingEpisodes' as display_name, MonthEnd as MonthStart, MonthEnd as MonthEnd, AVG(FullHHRG) as FullHHRG, 
AVG(LUPAAdj) as LUPAAdj, AVG(OutlierAdd) as OutlierAdd, AVG(UpDownCode) as UpDownCode, AVG(Sequester) as Sequester, 
AVG(NetHHRG) as NetHHRG, count(DISTINCT tb_Episode.id) as total 
FROM tb_Episode 
WHERE EpEnd is not null AND EpEnd >= '01-01-01' AND EpEnd < '01-01-01' AND CustID = '27' 
GROUP BY MonthEnd,FullHHRG,LUPAAdj,OutlierAdd,UpDownCode,Sequester,NetHHRG 
ORDER BY MonthEnd asc

Answer 1

我想你只想要group by中的monthend：

SELECT 'EndingEpisodes' as display_name, MonthEnd as MonthStart, MonthEnd as MonthEnd,
       AVG(FullHHRG) as FullHHRG, AVG(LUPAAdj) as LUPAAdj, AVG(OutlierAdd) as OutlierAdd,
       AVG(UpDownCode) as UpDownCode, AVG(Sequester) as Sequester, 
       AVG(NetHHRG) as NetHHRG, count(DISTINCT tb_Episode.id) as total 
FROM tb_Episode 
WHERE EpEnd is not null AND
      EpEnd >= '01-01-01' AND
      EpEnd < '01-01-01' AND
     CustID = '27' 
GROUP BY MonthEnd
ORDER BY MonthEnd asc;

SQL Server 无法识别GROUP BY 子句中的列别名，所以问题是无法识别display_name。它是一个常数，所以没有区别。

还请注意，此版本将在 MySQL 中运行。您可能需要注意日期格式。

Answer 2

我认为您的问题出在group by

SELECT 
    'EndingEpisodes' as display_name, 
    MonthEnd as MonthStart, 
    MonthEnd as MonthEnd, 
    AVG(FullHHRG) as FullHHRG, 
    AVG(LUPAAdj) as LUPAAdj, 
    AVG(OutlierAdd) as OutlierAdd, 
    AVG(UpDownCode) as UpDownCode, 
    AVG(Sequester) as Sequester, 
    AVG(NetHHRG) as NetHHRG, 
    count(DISTINCT tb_Episode.id) as total 
FROM tb_Episode 
WHERE EpEnd is not null AND EpEnd >= '01-01-01' AND EpEnd < '01-01-01' AND tb_Episode.CustID = '27' 
GROUP BY MonthEnd
ORDER BY MonthEnd asc