varsql="select origin_order_id,platform_type,website,order_currency,seller_order_exchange_rate,platform_sku_quantity_ordered,platform_sku_unit_price,item_id,platform_sku from dc_base_oms_platform_sku where has_delete=0 and has_scalp=0 and bailun_order_status!='Canceled' ";
if(start.HasValue)
{
sql+=" and paid_time_site>='"+start.Value.ToString("yyyy-MM-dd HH:mm:ss")+"'";
sql+=" and paid_time_site>='"+start.Value.ToString("yyyy-MM-dd HH:mm:ss")+"'";
}
if(end.HasValue)
{
sql+=" and paid_time_site<'"+end.Value.ToString("yyyy-MM-dd HH:mm:ss")+"'";
sql+=" and paid_time_site<'"+end.Value.ToString("yyyy-MM-dd HH:mm:ss")+"'";