code: func maybeExpandNamedQueryAndExec(e SqlExecutor, query string, args ...interface{}) (sql.Result, error) {
  	dbMap := extractDbMap(e)
  
  	if len(args) == 1 {
  		query, args = maybeExpandNamedQuery(dbMap, query, args)
  	}
  
  	return exec(e, query, args...)
  }
docs: // Calls the Exec function on the executor, but attempts to expand any eligible named
  // query arguments first.