@wendal 返回count

@wendal 这样写语句没问题吧？ 想根据条件返回相关数据的数量
public int countPhoneCode(PhoneCode code) {
Sql sql =Sqls.fetchInt("SELECT COUNT(*) AS number FROM $table WHERE mac = @mac ");
sql.vars().set("table","t7_user_phone_code");
sql.params().set("mac",code.getMac());
this.dao().execute(sql);
return sql.getInt();
}