On delete Error: SQL Error: ORA-00933: SQL command not properly ended

Question

我正在尝试使用以下查询从数据库中删除学生记录。但是我遇到了这个错误。

DELETE student, enrolment FROM student INNER JOIN enrolment
WHERE student.stu_nbr=enrolment.stu_nbr and student.stu_nbr = 154;

错误报告 - SQL 错误：ORA-00933：SQL 命令未正确结束 00933.00000 - "SQL command not properly ended"

Answer 1

试一试，删除已注册的学生记录。

delete from student s
where stu_nbr = 154
  and exists (
    select 1
    from enrollment
    where stu_nbr = s.stu_nbr
  );

如果您有兴趣从学生 table 和注册 table 中删除学生记录，运行 2 个查询：

delete from enrollment where stu_nbr = 154;
delete from student where stu_nbr = 154;

如果您想在删除学生时自动删除注册记录，您可能需要查看触发器。

sql