刪除查詢與相關實體

我試圖做一個批量刪除刪除查詢與相關實體

@NamedQuery(name=CalcData.DELETE, 
query="delete from CalcData as model where model.dataLocation.locCountries = :locCountries and model.locPeriod= :locPeriod")

的prbolem是休眠翻譯這

Hibernate: 
delete 
from 
    smart_rise.Calc_Data cross 
join 
    smart_rise.Data_Location datalocati1_ 
where 
    CountryID=? 
    and Period=?

executin的namedquery

時，這會導致異常

=== 2011-08-04 10:53:30,719 [l0-6] ERROR JDBCExceptionReporter - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'cross join smart_rise.Data_Location datalocati1_ where CountryID=6 and Period=10' at line 1 
=== 2011-08-04 10:53:30,719 [l0-6] ERROR PeriodsDMI - org.hibernate.exception.SQLGrammarException: could not execute update query 
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute update query 
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1214)

任何想法出了什麼問題？

謝謝你， Zdary

來源

2011-08-04 zdary

你不能用一個連接刪除。

如果locCountries是一個索引集合嘗試subquerying：

delete from CalcData as model 
where :locCountries in indicies(model.dataLocation.locCountries) 
and model.locPeriod= :locPeriod

如果不是：

delete from CalcData as model 
where model.id not in (select id from CalcData as m where model.dataLocation.locCountries = :locCountries and model.locPeriod= :locPeriod 
)

問候。

來源

2011-08-04 09:09:53 ssedano

嗨，謝謝你的快速回答。我用 '休眠：從smart_rise.Calc_Data 刪除其中ID（從選擇calcdata1_.ID smart_rise.Calc_Data calcdata1_交叉加入 smart_rise.Data_Location datalocati2_ 其中 smart_rise.Calc_Data.LocationID = datalocati2_.ID 和？datalocati2_.CountryID = 和smart_rise.Calc_Data.Period = ）' 我結束了例外 '造成的：？值java.sql.SQLException：您不能指定目標表 'Calc_Data' 的更新在FROM子句 \t at com.mysql.jdbc.SQLError.createSQLException（SQLError.java:10 73） ' – zdary

你試過第一個嗎？ – ssedano

這在MySQL中不起作用，因爲它不允許你從你在select子句中使用的實體中刪除 – Marc

刪除查詢與相關實體

回答

相關問題