internal override void Tran(KeyWordInfomation info)
        {
            StringBuilder sb = new StringBuilder();

            sb.Append(_param.DisplayInfo(info, TableName));
            AlterTableCondition con = info.Condition as AlterTableCondition;

            if (con != null)
            {
                con.Operator.Append(info.DBInfo.DBStructure.GetAddParamSQL());
            }
            info.Condition.SqlParams.Append(sb.ToString());
        }