hibernate - 在休眠查询中无法执行更新查询错误

Question

我正在为休眠中的删除编写以下代码

查询 query = session.createQuery("delete Contact contact where contact.firstName = 'Deepak'");

              int row = query.executeUpate();
              if (row == 0){
              System.out.println("Doesn't deleted any row!");
              }
              else{
              System.out.println("DeletedRow: " + row);
              }

它给了我以下错误 Hibernate: delete from CONTACT contact0_ where (contact0_.FIRSTNAME='Deepak') could not execute update query

谁能帮我