This works with mysql only at the moment by wrapping the mysql command? Can you give us a rundown of how you normally use it and what problems it solves? The readme doesn't give a lot of detail and that might be worth adding there too. A few minor points I'd look at:

• You are using string formatting to build sql command strings like SelectTablesCmd - that could allow sqli?

• You should document the permissions the tool needs to run (CREATEDB?) and the requirements on server/client

• For a tool like this working with dbs and potentially destructive, you need tests.