TraceOn turns on SQL statement logging for this DbMap. After this is called, all SQL statements will be sent to the logger. If prefix is a non-empty string, it will be written to the front of all logged strings, which can aid in filtering log lines.
Use TraceOn if you want to spy on the SQL statements that gorp generates.
Note that the base log.Logger type satisfies GorpLogger, but adapters can easily be written for other logging packages (e.g., the golang-sanctioned glog framework).