如何根据第三个表中的关系合并两个表？

Question

Suppose there are 3 tables:

student

teacher

advisor

Student has name and id columns, teacher also has name and id columns and advior has s_id (stands for student id) and t_id (stands for teacher id). s_id references to id in student table and t_id references to id in teacher table. How can I merge the name of the student with name of his advisor? Thanks for any help.

Answer 1

只需在学生表中创建主管ID，即可将主管与学生合并，并使用join Statement

Answer 2

You can use join to merge the tables.

Try this:

select b.name,c.name from advisor a
join student b on a.s_id = b.id
join teacher c on a.t_id = c.id
where a.s_id = 1

Note that a, b and c are aliases.