【发布时间】：2020-09-22 16:14:34
【问题描述】：
我正在使用Spring Boot Data JPA 并想从我的 MySQL 数据库中查询数据。我在 MySQL 工作台中编写了一个查询，结果非常好，现在我想在我的存储库中使用该查询作为本机查询。
这是我的 MySQL Workbench 的查询：
SELECT s.* FROM fips.schedule s
inner join lecture_object lo on s.id_lecture_object = lo.id_lecture_object
inner join lecture_semester ls on lo.id_lecture_semester = ls.id_lecture_semester
inner join lecture_semester_has_possible_lecturers ll on ls.id_lecture_semester = ll.id_lecture_semester
where s.id_scenario = 1 and ll.id_lecturer=103 and ll.status="fixed";
这是我的存储库中的行：
@Repository
public interface ScheduleRepository extends CrudRepository<Schedule, Integer> {
@Query(value="SELECT s.* FROM fips.schedule s " +
"inner join lecture_object lo on s.id_lecture_object = lo.id_lecture_object " +
"inner join lecture_semester ls on lo.id_lecture_semester = ls.id_lecture_semester " +
"inner join lecture_semester_has_possible_lecturers ll on ls.id_lecture_semester = ll.id_lecture_semester" +
"where s.id_scenario = :scenarioId " +
"and ll.id_lecturer = :lecturerId " +
"and ll.status = \"fixed\"", nativeQuery = true)
List<Schedule> getAllByFixedLecturerAndScenario(@Param("lecturerId") int lecturerId, @Param("scenarioId") int scenarioId);
}
现在执行时出现以下错误：
2020-09-22 18:02:15.607 DEBUG 7156 --- [nio-8081-exec-4] org.hibernate.SQL : SELECT s.* FROM fips.schedule s inner join lecture_object lo on s.id_lecture_object = lo.id_lecture_object inner join lecture_semester ls on lo.id_lecture_semester = ls.id_lecture_semester inner join lecture_semester_has_possible_lecturers ll on ls.id_lecture_semester = ll.id_lecture_semesterwhere s.id_scenario = ? and ll.id_lecturer = ? and ll.status = "fixed"
2020-09-22 18:02:15.608 WARN 7156 --- [nio-8081-exec-4] o.h.engine.jdbc.spi.SqlExceptionHelper : SQL Error: 1064, SQLState: 42000
2020-09-22 18:02:15.608 ERROR 7156 --- [nio-8081-exec-4] o.h.engine.jdbc.spi.SqlExceptionHelper : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 's.id_scenario = 1 and ll.id_lecturer = 103 and ll.status = "fixed"' at line 1
2020-09-22 18:02:15.610 ERROR 7156 --- [nio-8081-exec-4] c.v.flow.server.DefaultErrorHandler :
could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
WHERE-clause 似乎有问题，但它与 MySQL WB 中的语句完全相同。我在本机查询中遗漏了什么吗？我还尝试将fixed 周围的" 更改为'，这并没有改变结果（将status = "fixed" 替换为status LIKE "fixed" 也是如此。
【问题讨论】：
-
当把“fixed”改成“fixed”时，你是否也去掉了\转义符？
-
是的，它说
status = 'fixed'- 我还删除了 where 语句的那部分以检查这是否可能是问题，结果没有改变。 -
是否可以选择使用存储过程？否则我必须通过，对不起。
标签： java mysql spring spring-boot jpa