我有一个具有以下结构的数据。我正在使用实体框架。
Id fileName date status
---------------------------------------------
1 file1 12-05-2016 11:30 fail
2 file1 12-05-2016 11:35 success
3 file2 13-05-2016 12:01 success
4 file2 13-05-2016 12.02 fail
5 file1 13-05-2016 success
6 file3 13-05-2016 fail
我想要这样的结果
fileName 12-05-2016 13-05-2016
------------------------------------------
file1 success sucess
file2 fail
file3 fail
标准 - 在两个日期之间搜索数据，所有日期文件状态应以上述方式显示。同一天，同一文件中存在两个条目，然后将显示最新状态。
我正在使用代码优先方法来获取数据。
这是我在repo的代码
IQueryable<FileData> filedata=this.context.FileData;
答案 0 :(得分：1)
I created a pivot table based on Svek code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
FileStatus filestatus = new FileStatus();
filestatus.Load();
DataTable pivot = filestatus.PivotTable();
}
}
public class FileStatus
{
public static List<FileStatus> filedata = new List<FileStatus>();
public int? Id { get; set; }
public string filename { get; set; }
public DateTime date { get; set; }
public string status { get; set; }
public void Load()
{
filedata = new List<FileStatus>()
{
new FileStatus(){ Id = 1, filename = "file1", date = new DateTime(2016,05,12,11,30,00), status = "fail"},
new FileStatus(){ Id = 2, filename = "file1", date = new DateTime(2016,05,12,11,35,00), status = "success"},
new FileStatus(){ Id = 3, filename = "file2", date = new DateTime(2016,05,13,12,01,00), status = "success"},
new FileStatus(){ Id = 4, filename = "file2", date = new DateTime(2016,05,13,12,02,00), status = "fail"},
new FileStatus(){ Id = 5, filename = "file1", date = new DateTime(2016,05,13,12,30,00), status = "success"},
new FileStatus(){ Id = 6, filename = "file3", date = new DateTime(2016,05,13,12,31,00), status = "fail"}
};
}
public DataTable PivotTable()
{
DataTable pivot = new DataTable();
DateTime[] uniqueDates = filedata.Select(x => x.date.Date).Distinct().OrderBy(x => x).ToArray();
pivot.Columns.Add("filename", typeof(string));
foreach (DateTime date in uniqueDates)
{
pivot.Columns.Add(date.ToString("MM-dd-yyyy"), typeof(string));
}
var groups = filedata.GroupBy(x => x.filename).ToList();
foreach (var group in groups)
{
DataRow newRow = pivot.Rows.Add();
newRow["filename"] = group.Key;
foreach (FileStatus filestatus in group)
{
newRow[filestatus.date.ToString("MM-dd-yyyy")] = filestatus.status;
}
}
return pivot;
}
}
}
答案 1 :(得分：0)
Based on your question, here is an example class that would work
public class FileStatus
{
public int? Id { get; set; }
public string Filename { get; set; }
public DateTime Date { get; set; }
public string Status { get; set; }
}
Here is a working sample that would get you the result you want, so that you can pass it onto your report template:
var filedata= new List<FileStatus>()
{
new FileStatus(){ Id = 1, Filename = "file1", Date = new DateTime(2016,05,12,11,30,00), Status = "fail"},
new FileStatus(){ Id = 2, Filename = "file1", Date = new DateTime(2016,05,12,11,35,00), Status = "success"},
new FileStatus(){ Id = 3, Filename = "file2", Date = new DateTime(2016,05,13,12,01,00), Status = "success"},
new FileStatus(){ Id = 4, Filename = "file2", Date = new DateTime(2016,05,13,12,02,00), Status = "fail"},
new FileStatus(){ Id = 5, Filename = "file1", Date = new DateTime(2016,05,13,12,30,00), Status = "success"},
new FileStatus(){ Id = 6, Filename = "file3", Date = new DateTime(2016,05,13,12,31,00), Status = "fail"}
};
//remove the above and replace it with your own:
//IQueryable<FileData> filedata = this.context.FileData;
var result = filedata.GroupBy(c => new { c.Filename, c.Date.Date }).Select(c => new
{
Row = c.Key.Filename,
Column = c.Key.Date,
Value = filedata.FirstOrDefault(co => co.Id == c.Max(max => max.Id)).Status
}).OrderBy(c => c.Row).OrderBy(c => c.Column);
答案 2 :(得分：0)
First of all, you have to pay me for that, hahaha, all the example is wrong (repeats, year 1016¿?, hour with . instead of :, and without hour), I check you has written quickly...so:
declare @cols nvarchar(max)
declare @query nvarchar(max)
CREATE TABLE [dbo].[Table_1](
[id] [int] NULL,
[filename] [nvarchar](50) NULL,
[date] [datetime] NULL,
[status] [nvarchar](50) NULL
) ON [PRIMARY]
insert into table_1
values
(1 ,'file1' ,'12-05-2016 11:30:00.000' ,'fail'),
(2 ,'file1' ,'12-05-2016 11:35:00.000' ,'success'),
(3 ,'file2' ,'13-05-2016 12:01:00.000' ,'success'),
(3 ,'file2' ,'13-05-2016 12:02:00.000' ,'fail'),
(4 ,'file1' ,'13-05-2016 12:03:00.000' ,'success'),
(5 ,'file3' ,'13-05-2016 12:04:00.000' ,'fail')
select t2.filename,dat, status
into #temp1
FROM
(select filename, cast([date] as date) as dat, max([date]) as maxdat
from table_1
group by filename, cast([date] as date)
) t1
INNER JOIN
table_1 t2
on t1.filename = t2.filename
and t2.[date] = t1.maxdat
and cast(t2.date as date) = t1.dat
--select * from #temp1
--after that you want pivot by date and max status for example¿?
select @cols = STUFF((SELECT distinct ',' + QUOTENAME(convert(CHAR(10), datelist, 120))
from
(
select distinct cast(dat as date) as datelist from #temp1
)t1
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
--select @cols
set @query =
('select filename, ' + @cols + '
from #temp1
pivot (
max(status)
for dat in (' + @cols + ')
)p
')
print @query
exec(@query)
Hope this help you! $$