Notes
Notes - notes.io |
id int not null auto_increment,
cid int,
sid int,
primary key(id)
foreign key(cid) references courses(cid) on update cascade || ignore || null on delete cascade
)
SELECT * FROM selected
LEFT JOIN courses on selected.cid = courses.cid
SELECT * FROM selected
LEFT JOIN courses on selected.cid = courses.cid
left JOIN students on selected.sid = students.sid
|
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