code: func (m *DbMap) Exec(query string, args ...interface{}) (sql.Result, error) {
  	if m.ExpandSliceArgs {
  		expandSliceArgs(&query, args...)
  	}
  
  	if m.logger != nil {
  		now := time.Now()
  		defer m.trace(now, query, args...)
  	}
  	return maybeExpandNamedQueryAndExec(m, query, args...)
  }
docs: // Exec runs an arbitrary SQL statement.  args represent the bind parameters.
  // This is equivalent to running:  Exec() using database/sql