> Spaces should be used to line up the code so that the root keywords all end on the same character boundary.

  SELECT file_hash
    FROM file_system
   WHERE file_name = '.vimrc';

This style is annoying and I wish it gained less traction. It looks neat but it puts so much burden on the query writer, especially when you modify the query and all of the sudden you need to indent multiple lines just to make them all align. You know what's neat and still easy to modify/diff? Just indent a new line for each row.

    SELECT
        file_hash
    FROM
        file_system
    WHERE
        file_name = '.vimrc';