任何人都可以将此查询更改为删除

Question

select a.courseid from branch b 
    left outer join course a on a.courseid = b.courseid
where a.courseid is NULL

我想删除此查询提供的行

Answer 1

看起来您要删除课程表中没有courseid的分支记录。如果那是对的，那么：

delete b
    from branch b 
        left outer join course a
            on a.courseid = b.courseid  
    where a.courseid is NULL

Answer 2

DELETE a 
FROM branch b 
        left outer join course a
            on a.courseid = b.courseid  
where a.courseid is NULL

这是你想要的吗？