/// <summary>
        /// 编译时间点类型的where语句
        /// </summary>
        /// <param name="where"></param>
        /// <param name="filter"></param>
        private void BuildWhereWithPointInTime(StringBuilder where, PointInTimeFilterInfo filter)
        {
            //CreateTime >=DATE_ADD(now(),INTERVAL -4 Hour);
            if (where == null || filter == null)
            {
                return;
            }
            string expression = PointInTimeRelationDictData[filter.PointInTimeWhereRelation].Replace(Constants.ReplaceValue, filter.WhereValue.ToString());

            where.AppendFormat("{0}{1}({2}{0}{3})", Constants.WhiteSpace, EnumUtil.GetEnumOperation(filter.ConnectRelation), filter.FieldName, expression);
        }
 /// <summary>
 /// 编译时间点类型的where语句
 /// </summary>
 /// <param name="where"></param>
 /// <param name="filter"></param>
 private void BuildWhereWithPointInTime(StringBuilder where, PointInTimeFilterInfo filter)
 {
     //CreateTime >=DATE_ADD(now(),INTERVAL -4 Hour);
     if (where == null || filter == null) { return; }
     string expression = PointInTimeRelationDictData[filter.PointInTimeWhereRelation].Replace(Constants.ReplaceValue, filter.WhereValue.ToString());
     where.AppendFormat("{0}{1}({2}{0}{3})", Constants.WhiteSpace, EnumUtility.GetEnumOperation(filter.ConnectRelation), filter.FieldName, expression);
 }