varsql="select CONCAT("+columnname+",',',DATE_FORMAT(day,'%Y-%m-%d')) from dc_daily_logic_wh_statistic where warehouse_code='"+warehouse_code+"' ";
varsql="select CONCAT(name,',',DATE_FORMAT(day,'%Y-%m-%d')) as name from (";
sql+=$" and day>='{start.ToString("yyyy-MM-dd")}' and day<='{end.ToString("yyyy-MM-dd")}'";
if(columnname.Trim()=="pin_rate_stock")
{
sql+="select sum(thirtyday_total_sales)*100/sum(usable_stock) as name,day from dc_daily_logic_wh_statistic where warehouse_code='"+warehouse_code+"' ";
}
else
{
sql+="select sum("+columnname+") as name,day from dc_daily_logic_wh_statistic where warehouse_code='"+warehouse_code+"' ";
}
sql+=$" and day>='{start.ToString("yyyy-MM-dd")}' and day<='{end.ToString("yyyy-MM-dd")}' group by day";