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我已经在与记录表ActivityLog:需要帮助LINQ查询集团通过+计数
ID, UserId, Category, Created
1 11 DeAssigned 05/10/2012
2 11 LogIn 05/11/2012
3 20 Assigned 06/15/2012
4 11 Assigned 06/10/2012
5 20 DeAssigned 06/13/2012
6 20 Assigned 07/12/2012
7 11 DeAssigned 07/16/2012
8 20 Assigned 08/15/2012
...
现在我想查询表创建相同结构的相同的结果。这如:
var data = new[] {
new { Month = "05", Assigned = 14, DeAssigned = 5, LogIn=1 },
new { Month = "06", Assigned = 5, DeAssigned = 2, LogIn=0 },
new { Month = "07", Assigned = 50, DeAssigned = 8, LogIn=0 },
new { Month = "08", Assigned = 15, DeAssigned = 1, LogIn=0 }
};
我所取得的成就:
var result = (from l in repoA.GetAll()
where l.Created >= System.DateTime.Now.AddYears(-1)
group l by new { l.Created.Value.Month, l.Category }
into groups
orderby groups.Key.Month
select new
{
Month = groups.Key.Month,
Category = groups.Key.Category,
Count = groups.Count()
});
没有最优的结果,但算上所有活动的按月份划分:
[0] {Month = 6, Category = Assigned, Count = 2}
[0] {Month = 6, Category = Designed, Count = 1}
[0] {Month = 6, Category = LogIn, Count = 1}
[0] {Month = 7, Category = Assigned, Count = 3}
我如何查询我的表格式化我在“水平计数”格式结果?
它的工作原理..谢谢你这么多,你很快得出答案... – Flyboy