func exec(stmt *sql.Stmt, args ...interface{}) error {
	_, err := stmt.Exec(args...)
	if err != nil {
		return fmt.Errorf("mysql: could not execute statement: %v", err)
	}
	return nil
}
// execAffectingOneRow executes a given statement, expecting one row to be affected.
execAffectingOneRow executes a given statement, expecting one row to be affected.
// execAffectingOneRow executes a given statement expecting one row to be affected .
func exec(stmt *sql.Stmt, args ...interface{}) error {
	_, err := stmt.Exec(args...)
	if err != nil {
		return fmt.Errorf("mysql: could not execute statement: %v", err)
	}
	return nil
}
func exec ( stmt * sql . Stmt , args ... interface { } ) error { _ , err := stmt . Exec ( args ... ) if err != nil { return fmt . Errorf ( " " , err ) } return nil }
execAffectingOneRow executes a given statement, expecting one row to be affected.
execAffectingOneRow executes a given statement expecting one row to be affected .