Question

我正在尝试获取一个报告，您可以在其中选择日期范围并获取一些计数。我的桌子是这样的

--------------------------------------
RecID|AgentID|date
--------------------------------------
1    |00123  | 05/09/2012 16:28:49
2    |00123  | 05/09/2012 17:28:49
3    |00124  | 05/09/2012 18:28:49
4    |00124  | 06/09/2012 19:28:49
5    |00125  | 06/09/2012 20:28:49

我想要像

这样的东西

--------------------------------------
AgentID|05/09/2012|06/09/2012
--------------------------------------
00123  | 2        | 0
00124  | 1        | 1
00125  | 0        | 1

我的代码是

DECLARE @cols AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX),
    @INIDate as date,
    @ENDDate as date,
    @INIDateVAR nvarchar(50),
    @ENDDateVAR nvarchar(50)

Set @INIDate = '10-01-2014'
Set @ENDDate = '10-10-2014'


DECLARE @sql NVARCHAR(MAX) = N'SELECT agentID';

;WITH dr AS
(

  SELECT MinDate = @INIDate,
         MaxDate = @ENDDate
),
n AS
(
  SELECT TOP (DATEDIFF(DAY, (SELECT MinDate FROM dr), (SELECT MaxDate FROM dr)) + 1)
   d = DATEADD(DAY, ROW_NUMBER() OVER (ORDER BY [object_id])-1, 
     (SELECT MinDate FROM dr))
 FROM sys.all_objects
)
SELECT @sql += ',
  (Select Count(*) From AllRecordsView) as ' + QUOTENAME(d) 
   FROM n;

SELECT @sql += ' FROM dbo.AllRecordsView Group by AgentID;'

EXEC sp_executesql @sql;
GO

但是当我选择一个较大的日期范围时，这会变得非常慢，我得到的结果当然是整个表的计数。

有什么想法吗？感谢

Answer 1

您可以使用day（）函数（取决于数据库）从日期字段中提取日期并在GROUP BY中使用它。对于范围使用SQL BETWEEN。

如果仍有性能问题，则应在AgentID和日期列上创建索引。

SELECT dateColumn, AgentID, count(AgentID) AS agentCount FROM YourTable WHERE dateColumn BETWEEN '2012-09-05' AND '2012-09-09' GROUP BY day(dateColumn), AgentID ORDER BY dateColumn;

Answer 2

我最终做的是使用Reporting Services。这样我就可以将列中的所有值分配为列，每行一个。

列中的sql日期范围和按组计数

2 个答案: