mySQL where in子句

Question

Is it possible to do something like this with a where in clause, I am required to query the following data using where in.

select *
FROM instructor AS i
INNER JOIN teaches AS t ON i.id = t.ID
where course_id in ('C%'); -I want every course ID that begins with C

Answer 1

Use LIKE :

select *
FROM instructor AS i
INNER JOIN teaches AS t ON i.id = t.ID
where course_id LIKE 'C%';

Answer 2

使用LIKE代替IN完成。

Answer 3

Use like 'C%' .

select * FROM instructor AS i INNER JOIN teaches AS t ON i.id = t.ID WHERE course_id LIKE 'C%';

See http://www.techonthenet.com/sql/like.php

Answer 4

1. I want every course ID that begins with C

2. Is there a way to accomplish this with WHERE IN? That's what I am required to use. – FatalProphet

You can compare the first letter of the data with desired letter.

Example :

-- for other matchings too, input other comma separated letters
where LEFT( course_id, 1 ) in ( 'C' )