hql查询删除两个表中的记录
hql query to delete records in two tables
My query is.
Query query1 = session.createQuery(
"DELETE Question, Answer FROM Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid");
query1.setParameter("qtypeid", id);
query1.executeUpdate();</pre>
This Query is not working..Please help...
HTTP Status 500 - Request processing failed; nested exception is org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: , near line 1, column 38 [DELETE com.online.test.model.Question, Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid]
输入异常报告
消息请求处理失败；嵌套异常是 org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: , near line 1, column 38 [DELETE com.online.test.model.Question, Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid]
说明服务器遇到内部错误，无法完成此请求。
异常
org.springframework.web.util.NestedServletException：请求处理失败；嵌套异常是 org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: , near line 1, column 38 [DELETE com.online.test.model.Question, Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid]
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:973)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
根本原因
org.hibernate.hql.internal.ast.QuerySyntaxException：意外标记：，第 1 行附近，第 38 列 [DELETE com.online.test.model.Question，Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId 哪里 que.quiz_type_id=:qtypeid]
org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:91)
org.hibernate.hql.internal.ast.ErrorCounter.throwQueryException(ErrorCounter.java:109)
org.hibernate.hql.internal.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:304)
org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:203)
org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:158)
org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:126)
org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:88)
org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:190)
org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:301)
org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:236)
org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1800)
com.online.test.Dao.AdminTestDaoImpl.removeQuiz(AdminTestDaoImpl.java:104)
com.online.test.service.AdminTestServicesImpl.removeQuiz(AdminTestServicesImpl.java:58)
sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)
sun.reflect.NativeMethodAccessorImpl.调用(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
org.springframework.transaction.interceptor.TransactionInterceptor.调用(TransactionInterceptor.java:95)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
com.sun.proxy.$Proxy35.removeQuiz（来源不明）
com.online.test.AdminController.removecountry(AdminController.java:59)
sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)
sun.reflect.NativeMethodAccessorImpl.调用(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
注意 Apache Tomcat/8.0.9 日志中提供了根本原因的完整堆栈跟踪。
阿帕奇 Tomcat/8.0.9
Hibernate 批量 DML 操作不支持联接。来自 documentation:
No Section 16.4, “Forms of join syntax”, either implicit or
explicit, can be specified in a bulk HQL query. Sub-queries can be
used in the where-clause, where the subqueries themselves may contain
joins.
您可以使用两个 delete 语句分别删除答案和问题。
您不能在 HQL 中将 on 与 join 一起使用。正如@DraganBozanovic 所建议的，您不能使用 join 进行删除。有效查询可以是
DELETE FROM Question que WHERE que.quiz_type_id = :qtypeid
要在删除相应问题时删除答案，您需要具有注释属性 — cascade = CascadeType.ALL、orphanRemoval = true
如果使用一对多的关联就可以
@OneToMany(mappedBy = "question", cascade = CascadeType.ALL, orphanRemoval = true)
private List<Answer> answers;
您可以考虑使用更具体的级联，而不是使用 CascadeType.ALL。
My query is.
Query query1 = session.createQuery( "DELETE Question, Answer FROM Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid"); query1.setParameter("qtypeid", id); query1.executeUpdate();</pre>This Query is not working..Please help...
HTTP Status 500 - Request processing failed; nested exception is org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: , near line 1, column 38 [DELETE com.online.test.model.Question, Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid]
输入异常报告
消息请求处理失败；嵌套异常是 org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: , near line 1, column 38 [DELETE com.online.test.model.Question, Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid]
说明服务器遇到内部错误，无法完成此请求。
异常
org.springframework.web.util.NestedServletException：请求处理失败；嵌套异常是 org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: , near line 1, column 38 [DELETE com.online.test.model.Question, Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId WHERE que.quiz_type_id=:qtypeid] org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:973) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) javax.servlet.http.HttpServlet.service(HttpServlet.java:618) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
根本原因
org.hibernate.hql.internal.ast.QuerySyntaxException：意外标记：，第 1 行附近，第 38 列 [DELETE com.online.test.model.Question，Answer FROM com.online.test.model.Question que LEFT JOIN Answer ans ON que.id=ans.questionId 哪里 que.quiz_type_id=:qtypeid] org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:91) org.hibernate.hql.internal.ast.ErrorCounter.throwQueryException(ErrorCounter.java:109) org.hibernate.hql.internal.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:304) org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:203) org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:158) org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:126) org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:88) org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:190) org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:301) org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:236) org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1800) com.online.test.Dao.AdminTestDaoImpl.removeQuiz(AdminTestDaoImpl.java:104) com.online.test.service.AdminTestServicesImpl.removeQuiz(AdminTestServicesImpl.java:58) sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法) sun.reflect.NativeMethodAccessorImpl.调用(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:606) org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) org.springframework.transaction.interceptor.TransactionInterceptor.调用(TransactionInterceptor.java:95) org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) com.sun.proxy.$Proxy35.removeQuiz（来源不明） com.online.test.AdminController.removecountry(AdminController.java:59) sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法) sun.reflect.NativeMethodAccessorImpl.调用(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:606) org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) javax.servlet.http.HttpServlet.service(HttpServlet.java:618) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) javax.servlet.http.HttpServlet.service(HttpServlet.java:725) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
注意 Apache Tomcat/8.0.9 日志中提供了根本原因的完整堆栈跟踪。 阿帕奇 Tomcat/8.0.9
Hibernate 批量 DML 操作不支持联接。来自 documentation:
No Section 16.4, “Forms of join syntax”, either implicit or explicit, can be specified in a bulk HQL query. Sub-queries can be used in the where-clause, where the subqueries themselves may contain joins.
您可以使用两个 delete 语句分别删除答案和问题。
您不能在 HQL 中将 on 与 join 一起使用。正如@DraganBozanovic 所建议的，您不能使用 join 进行删除。有效查询可以是
DELETE FROM Question que WHERE que.quiz_type_id = :qtypeid
要在删除相应问题时删除答案，您需要具有注释属性 — cascade = CascadeType.ALL、orphanRemoval = true
如果使用一对多的关联就可以
@OneToMany(mappedBy = "question", cascade = CascadeType.ALL, orphanRemoval = true)
private List<Answer> answers;
您可以考虑使用更具体的级联，而不是使用 CascadeType.ALL。