在 jpa 中使用 @query 选择第一条记录

Question

I have a jpa query that holds two records, from the two records I am unable to select the first record using @query in jpql

Here is my snippet

@Query("select h from History h where h.id =:id and h.status =:status " +
            "and h.type =:type and h.user =:user")
    History getAHistory(@Param("id") Long id, @Param("status") Status status,
                                         @Param("type") Type type, @Param("user") User user);

From findings I am trying to use the LIMIT 1 but no success

Answer 1

Your query returns a single History entity. If you plan to return more than one History entity you need to return a collection eg a list:

@Query("select h from History h where h.id = :id and h.status = :status " +
       "and h.type = :type and h.user = :user")
List<History> getAHistory(@Param("id") Long id, @Param("status") Status status,
                          @Param("type") Type type, @Param("user") User user);