Server installation solved by recreating db after using mysql

hi i see similar posting but no solution .

tying to do install and it fails with error
'unable to create user admin access denied ’

system raspberry pi using latest stretch

and latest cloud
i did mysel -u root
created user db.
when i show tables i see no tables in db
hope someone can help with this


maybe this post of @jvillafanez here helps which seems to give some info how to connect ownCloud to an database: