Like expression with case statement error

[cbichis]

Hello,
Its seems a QueryBuilder CASE statement combined with a LIKE is throwing this error:

Error: Expected =, <, <=, <>, >, >=, !=, got 'LIKE'

A similar issue was reported some time ago but only on "Discussions" part of the site, i'll paste here the DQL:

SELECT u, CASE WHEN u.roles LIKE '%ROLE_SUPER_ADMIN%' THEN 'Admin' ELSE '' END AS role
FROM App\Entity\User u
WHERE (CASE WHEN u.roles LIKE '%ROLE_SUPER_ADMIN%' THEN 'Admin' ELSE '' END LIKE :filter0_0)

and I got the error [Syntax Error] line 0, col 936: Error: Expected =, <, <=, <>, >, >=, !=, got 'LIKE'