Question

(SELECT s
FROM enrolls
WHERE s)
NOT IN
(SELECT s
FROM likes
WHERE s);

I’ve got two tables, enrolls and likes, and I’m trying to find s from enrolls where all of the tuples of s likes and enrolls have in common are removed (or enrolls - likes, basically).

I get the following error, though:

You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use
near ‘NOT IN (SELECT s FROM likes WHERE s)’ at line 4

Answer 1

The first set of parenthesis are improperly splitting your s NOT IN clause:

SELECT s
FROM enrolls
WHERE s NOT IN
    (
    SELECT s
    FROM likes
    WHERE s
    )