[英]@Query doesn't work if I select more than 1 column
我有一个像下面这样的查询不起作用。
它抛出IndexOutOfBoundsException: Index: 0, Size: 0
(抱歉,我无法发布整个堆栈跟踪,因为它在我的工作站(远程)中)当我从 Spring Boot 1.5.2.RELEASE
升级到1.5.22.RELEASE
时,这开始成为一个问题
@Transactional(readOnly = true)
@Query(value = "SELECT q.id as someId, q.name as someName from Quote q where q.id in (:quoteIds)")
List<Tuple> selectSomeThings(@Param("quoteIds") List<Long> quoteIds)
现在,当我像这样尝试 select 1 列时,
@Transactional(readOnly = true)
@Query(value = "SELECT q.id as someId from Quote q where q.id in (:quoteIds)")
List<Tuple> selectSomeThings(@Param("quoteIds") List<Long> quoteIds)
或者
@Transactional(readOnly = true)
@Query(value = "SELECT q.name as someName from Quote q where q.id in (:quoteIds)")
List<Tuple> selectSomeThings(@Param("quoteIds") List<Long> quoteIds)
有用。 当我同时 select 2 时,它就不起作用了。
我建议从存储库方法返回一个 Bean 实例。
这里的例子:
@Query("SELECT " +
" new com.path.to.Tuple(v.id, v.name) " +
"FROM " +
" Quote v where v.id in (:quoteIds) ")
List<Tuple> find(@Param("quoteIds") List<Long> quoteIds);
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