目前我有三个实体 Country , Office 用户，在哪里 Country.gov 属于类型 Office 在哪里 Office.holder 属于类型 User . 国家是世界的主人 Country.gov 办公室是公司的主人 Office.holder .
现在我想得到 Country.gov 用一个 LEFT JOIN 在 Office.holder 使用国家属性，例如。 SELECT c.gov o FROM Country c LEFT JOIN FETCH c.gov LEFT JOIN FETCH c.gov.holder WHERE c.countryKey = :countryKey ，但这不起作用，它引发了一个异常：

org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list 
[FromElement{explicit,not a collection join,fetch join,fetch non-lazy properties,classAlias=null,role=dev.teamnight.game.entities.Country.gov,tableName=office,tableAlias=office1_,origin=country country0_,columns={country0_.gov_id,className=dev.teamnight.game.entities.Office}}] 
[SELECT c.gov FROM dev.teamnight.game.entities.Country c LEFT JOIN FETCH c.gov LEFT JOIN FETCH c.gov.holder WHERE c.countryKey = :countryKey]