Question

Let’s say my database value something like this

user_id  question_id
---------------------
1        1,2,3,4,5
2        3,4,5
3        1,3,5
4        3,4,5,6,7

What is correct statement to find which user exactly using question_id 1 & 5

$query = '1,5';

question_id LIKE '%" . $query . "%'
FIND_IN_SET(question_id,'" . $query . "')
question_id IN ('" . $query . "')

I tried using LIKE, FIND_IN_SET & IN but the result is incorrect.

So I want the result should be

user_id  question_id
---------------------
1        1,2,3,4,5
3        1,3,5

Let me know..

Answer 1

$query = ‘1,5’;
parse this into two variables

$query1 = '1';

$query2 = '5';

now create query dynamically

FIND_IN_SET('" . $query1 . "', question_id) AND FIND_IN_SET('" . $query2 . "', question_id)