Question

我正在编写一个查询，列出所有教过Kim（Staff_Fname）Cox（Staff_Lname）课程或曾在同一个房间（Loc_id）教过Kim的所有教职员工的名字和姓氏考克斯。

到目前为止，我已经写了这个（并且它充满了错误）：

SELECT KimClasses.Course_Code, KimClasses.Course_Name, St2.Staff_Fname, St2.Staff_Lname
FROM
(SELECT St.Staff_id, CS.C_SE_id, C.Course_code, C.Course_name
FROM Staff St
JOIN CourseSection CS ON St.Staff_id = CS.Staff_ID
JOIN Location L ON CS.Loc_ID = L.Loc_id
JOIN Course C ON CS.Course_ID = C.Course_ID
WHERE St.Staff_Fname = "Kim"
    AND St.Staff_Lname = "Cox") KimClasses
JOIN CourseSection CS2 ON KimClasses.Course_ID = CS2.Course_ID
    AND NOT KimClasses.Staff_id = St2.Staff_id;

但我不确定如何将该部分列入同一房间教授的工作人员。

数据库架构：http://i.stack.imgur.com/dTGV5.jpg

Answer 1

这应该让你开始......

 Select s.staff_fname,s.staff_lname
 from staff s join course_section cs
 on s.staff_if = cs.staff_id
 where cs.course_id in (select distinct s1.course_id from staff s1 join course_section sc1 where s1.Staff_Fname = 'kim' and s1.Staff_Lname = "Cox" )
 OR s.loc_id in  (select distinct s2.loc_id from staff s2 join course_section sc2 where s2.Staff_Fname = 'kim' and s2.Staff_Lname = "Cox" )

SQL / MySQL查询帮助

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