Question

我正在尝试删除学生表中加入学生班级的第一行，方法是在学生表中使用学生的第一，中间和姓氏以及出生日期，该表引用Student_Class表中的CLASS。我尝试过使用以下语句，但似乎没有用。

delete from student where student.stu_id = (select student_class.stu_id from 
student_class left outer join student on student.stu_id = 
student_class.stu_id where student.first_name = 'Junior' AND 
student.middle_name = 'Mills' AND student.last_name = 'Prince' AND 
student.dob = '2015-10-02' AND student.sch_id = '2' AND student_class.class 
= 'J.H.S. 1');

还有：

delete student.* from student inner join student_class on 
student_class.stu_id  = student.stu_id where student.stu_id = (select 
student_class.stu_id from student_class left outer join student on 
student.stu_id = student_class.stu_id where student.first_name = 'Junior' 
AND student.middle_name = 'Mills' AND student.last_name = 'Prince' AND 
student.dob = '2015-10-02' AND student.sch_id = '2' AND student_class.class 
= 'J.H.S. 1');

TABLES

Answer 1

您还没有为删除做过简单的连接： -

DELETE a
FROM student a
INNER JOIN student_class b
ON a.stu_id = b.stu_id 
WHERE a.first_name = 'Junior' 
AND a.middle_name = 'Mills' 
AND a.last_name = 'Prince' 
AND a.dob = '2015-10-02' 
AND a.sch_id = '2' 
AND b.class = 'J.H.S. 1'

但您似乎想要从 student 表（而不是 student_class 表）中删除记录，并且几乎指定了来自的所有标识字段>学生表。无论如何。

带连接的mysql删除语句

1 个答案: