USE
Preview Feature
Comment Script is a preview feature and is only available in the DAX Studio preview build. Its syntax and behavior may change before the final release.
USE selects a database on the current connection. It is equivalent to changing the database in the Metadata pane.
Syntax
--> USE <database-name>
Quote names that contain spaces, or leave the name unquoted through the end of the command line.
--> CONNECT SERVER localhost\tabular
--> USE "Adventure Works"
The database name supports SET variable expansion.