在使用RedBean PHP ORM时,如何确保某个表被某个列编入索引?

I have an entity named 'account' which will have a username column and I want to index by this because I will be using it to lookup the username when logging in.

How do I tell redbean orm that I would like this table to have column 'username' to be indexed for faster lookup? Would I have to update the database manually instead of going through redbean orm?

I think this is what you're after:

R::$writer->addIndex('account','userindex','username');