是否可以使用 nativeQuery 标志（从子句中的子查询）转换查询？

Question

下面我创建了一个查询，我需要摆脱 nativeQuery 标志。有可能吗？

@Query(nativeQuery = true, value = "" +
        " select name from (" +
        "    select distinct t.name" +
        "    from my_table t" +
        "    order by t.name asc" +
        " ) as name" +
        " where :name='' or upper(name) = upper(:name) or upper(name) like ('%' || upper(:name) || '%')" +
        " order by case when (:name='' or upper(name) like (upper(:name) || '%')) then 0 else 1 end")
Page<String> search(@Param("name") String name, Pageable pageable);

Answer 1

当然，只需使用 CONCAT 函数而不是 || 连接运算符，如下所示：

@Query("select distinct t.name" +
       "from MyEntity t" +
       "where :name='' or upper(t.name) = upper(:name) or upper(t.name) like concat(concat('%', upper(:name)), '%')" +
       " order by case when (:name='' or upper(t.name) like concat(upper(:name), '%')) then 0 else 1 end")
Page<String> search(@Param("name") String name, Pageable pageable);