how to match one id with multiple comma separated ids

Question

I have a table demo

ID        collectionID

1           1,3,4
2           3,5
3           30,35,2 
4           4,5
5           2,3,30

Now, I want to getting rows which collectionID=3 using MYSQL query.

desired output will be -

1           1,3,4
2           3,5
5           2,3,30

Answer 1

Use FIND_IN_SET() , like this:

SELECT *
FORM myTable
WHERE FIND_IN_SET('3', collectionID)

Answer 2

尝试这个

select * from tbl_name where FIND_IN_SET("3",collectionID);