Selecting where an entity contains a list thats a subset of another list

Question

I am writing a JPQL query and i have the following scenario. I have a Question entity which contains a list of Tags. I would like to select all Questions that contains a gi

Answer 1

Nayans solution does'nt work for me. Its selecting every 'x' which matches the first (or any?) entry of the given collection ':tags'. If this really worked for you, you should test you application again ;) might be JPA dependend - I don't know.

Tip: Try Krzysztofs solution or use mine:

SELECT x FROM Question x 
WHERE x IN (
    SELECT y FROM Question y
    INNER JOIN y.tags yt
    WHERE yt IN (
        :tags
    )
    GROUP BY y
    HAVING COUNT( DISTINCT yt) = (
        :tagsSize // should be clear ;)
    )
)