How to add multiple values ​​to SQL query?

Question

MySQL

Friends, hello everyone!
Tell me how to add a condition for selecting tags of two types (8 and 4), now only 8 is pulled up. Construction below:

$TagArt->where($db->quoteName('c.type') . ' = 8 AND ' . $db->quoteName('b.id') . ' IN  (' . $LoadTagIrticle . ')');

Answer 1

$TagArt->where($db->quoteName('c.type') . ' IN (4, 8) AND ' . $db->quoteName('b.id') . ' IN  (' . $LoadTagIrticle . ')');

Answer 2

do not know sql yet - write your questions in English
select* from table where id =8 or id=4