How to rewrite sql in my owner driver

hi,i'm a apache doris whihc is a OLAP system.I write doris driver for metabase . I have a question for rewrite sql.
my database name is

when i preview data from a table , the generate sql like
"SELECT AS uid, AS username, AS password, AS email, AS home_url, AS screen_name, AS created, AS activated, AS logged, AS group_name

the database name "" is quoted by . i want to remove , which method should i implement in my driver