query specified join fetching, but the owner of the fetched association was not present in the selec

最新推荐文章于 2024-07-04 17:11:50 发布

原创最新推荐文章于 2024-07-04 17:11:50 发布 · 1.8k 阅读

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本文探讨了在使用Hibernate进行数据库查询时，遇到的'query specified join fetching, but the owner of the fetched association was not present in the select list'错误。主要原因是将fetch关键字与count函数一同使用。解决方案包括移除fetch关键字或调整查询语句结构。

java.lang.IllegalArgumentException: org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list

可能的原因：fetch 与 count 一起使用

select count(o) from Student s left outer join fetch o.clazz

把fetch去掉即可

select count(o) from Student s left outer join o.clazz

或

select count(o) from Student s

确定要放弃本次机会？

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the specified exe creation was not support yet