摘要:
this.dChart.Diagram.Series.Clear();//清空图的内容 var groups = result.GroupBy(itm => itm["flag"]);//将result根据flag属性分组 result是要显示为散点图的数据内容 foreach (var group 阅读全文
摘要:
select * from(select row_number() over(partition by IDCARD order by DATATM desc) as rownum,* from (SELECT * FROM TABLENAME)as H1 ) as H where H.rownum 阅读全文