從子查詢中刪除

Question

我在我的應用程序中使用了Hibernate。目前，我試圖執行以下查詢：

DELETE FROM ActiveTimes a WHERE 
a.begin>=:from AND a.begin<=:to 
AND a.end>=:from AND a.end<=:to 
    AND a in( 
     SELECT al FROM ActiveTimes al 
      JOIN al.source.stage st 
     JOIN st.level.dataSource ds 
    WHERE ds=:dataSource) 

但我得到一個錯誤：Column 'id' in field list is ambiguous。 這種感覺很正常，因爲創建的SQL查詢看起來是這樣的：

delete 
from 
    active_times 
where 
    begin>=? 
    and begin<=? 
    and end>=? 
    and end<=? 
    and (
     id in (
      select 
       id 
      from 
       active_times activeti1_ 
      inner join 
       sources sourc2_ 
        on activeti1_.source=sourc2_.id 
      inner join 
       stage stage3_ 
        on sourc2_.id=stage3_.source 
      inner join 
       levels levels4_ 
        on stage3_.level=levels4_.id 
      inner join 
       datasources datasource5_ 
        on levels4_.data_source=datasource5_.id 
      where 
       id=? 
     ) 
    ) 

如果我更改查詢到：

DELETE FROM ActiveTimes a WHERE 
a.begin>=:from AND a.begin<=:to 
AND a.end>=:from AND a.end<=:to 
    AND a.id in( 
     SELECT al.id FROM ActiveTimes al 
      JOIN al.source.stage st 
     JOIN st.level.dataSource ds 
    WHERE ds.id=:dataSource) 

我得到另一個錯誤：You can't specify target table 'active_times' for update in FROM clause。

我對JPQL（或HQL）沒有太多的實驗，所以我不明白爲什麼查詢看起來像第一個例子。

新的錯誤發生是因爲我無法在MySQL的刪除表上創建一個子查詢。

對於如何重寫上述查詢之一以使其工作，您有任何建議嗎？

Answer 1

只要刪除子查詢。這是沒有必要的。我不知道如何在Hybernate中編寫SQL代碼，但我猜這將是這樣的：

DELETE a 

FROM ActiveTimes a 

     JOIN a.source.stage st 
     JOIN st.level.dataSource ds 

WHERE a.begin>=:from AND a.begin<=:to 
     AND a.end>=:from AND a.end<=:to 
     AND ds.id=:dataSource;