如何使用日期范围执行 sql 查询

Question

我有这个 SQL Server 表：

我需要将每个类别的流组合在一起，并向用户展示过去几周的概览，如下图所示：

此数据表询问 Web 服务，该服务反过来查询数据库。

复选标记的颜色取决于 CodState 的值：如果还有一个状态等于 4（'Denied'），则复选标记为红色。否则为绿色。

请注意，日期字段 DetailsS​​tream 对应于某一天。

问题在于不同日期范围的查询公式（图中：最近五周，从周一到周五）。

编辑

按照建议，我的表格架构：

-- Category:
CREATE TABLE [dbo].[StreamCategory](
    [Cod] [int] NOT NULL,
    [Name] [varchar](50) NOT NULL,
 CONSTRAINT [PK_StreamCategory] PRIMARY KEY CLUSTERED 
(
    [Cod] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]



-- Stream
CREATE TABLE [dbo].[Stream](
    [Id] [int] IDENTITY (1, 1) NOT NULL,
    [Name] [varchar](100) NOT NULL,
    [TypeStream] [varchar](15) NOT NULL,
    [CodCategory] [int] NOT NULL,
 CONSTRAINT [PK_Stream] PRIMARY KEY CLUSTERED 
(
    [Id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]


ALTER TABLE [dbo].[Stream]  WITH CHECK ADD  CONSTRAINT [FK_Stream_StreamCategory] FOREIGN KEY([CodCategoria])
REFERENCES [dbo].[StreamCategory] ([Cod])
GO

ALTER TABLE [dbo].[Stream] CHECK CONSTRAINT [FK_Stream_StreamCategory]
GO



-- State Details stream
CREATE TABLE [dbo].[StateDetailsStream](
    [Cod] [int] NOT NULL,
    [Description] [varchar](50) NOT NULL,
 CONSTRAINT [PK_DetailsStream] PRIMARY KEY CLUSTERED 
(
    [Cod] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]



--  Details stream
CREATE TABLE [dbo].[DetailsStream](
    [Id] [int] IDENTITY (1, 1) NOT NULL,
    [DateStream] [datetime] NOT NULL,
    [CodStateDetailsStream] [int] NOT NULL,
    [IdStream] [int] NOT NULL,
 CONSTRAINT [PK_DetailsStream] PRIMARY KEY CLUSTERED 
(
    [Id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]


ALTER TABLE [dbo].[DetailsStream]  WITH CHECK ADD  CONSTRAINT [FK_DetailsStream_StateDetailsStream] FOREIGN KEY([CodStateDetailsStream])
REFERENCES [dbo].[StateDetailsStream] ([Cod])
GO

ALTER TABLE [dbo].[DetailsStream] CHECK CONSTRAINT [FK_DetailsStream_StateDetailsStream]
GO

ALTER TABLE [dbo].[DetailsStream]  WITH CHECK ADD  CONSTRAINT [FK_DetailsStream_Stream] FOREIGN KEY([IdStream])
REFERENCES [dbo].[Stream] ([Id])
GO

ALTER TABLE [dbo].[DetailsStream] CHECK CONSTRAINT [FK_DetailsStream_Stream]
GO

插入：

-- StreamCategory

INSERT INTO [myDb].[dbo].[StreamCategory]
           ([Cod]
           ,[Name])
     VALUES
       (1,'Category A'),
       (2,'Category B'),
       (3,'Category C')
GO



-- Stream

INSERT INTO [myDb].[dbo].[Stream]
           ( [CodCategory]
            ,[Name]
           )
     VALUES
        -- Category A:
        (   1       ,'Stream001'    ), -- IdStream: 1
        (   1       ,'Stream002'    ), -- IdStream: 2
        (   1       ,'Stream003'    ), -- IdStream: 3
        (   1       ,'Stream004'    ),
        -- Category B:
        (   2       ,'Stream005'    ), -- IdStream: 5
        (   2       ,'Stream006'    ),
        (   2       ,'Stream007'    ),
        (   2       ,'Stream008'    ),
        -- Category C:
        (   3       ,'Stream009'    ), -- IdStream: 9
        (   3       ,'Stream010'    ), -- IdStream: 10
        (   3       ,'Stream011'    ),
        (   3       ,'Stream012'    )
GO



-- StateDetailsStream

INSERT INTO [myDB].[dbo].[StateDetailsStream]
           ([Cod]
           ,[Description])
     VALUES
       (1, 'InProgress'),
       (2, 'Received'),
       (3, 'Ko'),
       (4, 'Declined')
GO



-- DetailsStream

DECLARE
@mon    as datetime = '20/06/2016'
DECLARE
@tue    as datetime = @mon+1,
@wed    as datetime = @mon+2,
@thu    as datetime = @mon+3,
@fry    as datetime = @mon+4


INSERT INTO [myDB].[dbo].[DetailsStream]
           ([IdStream] -- fk
           ,[DateStream]
           ,[CodStateDetailsStream]
           )
    VALUES
        -- Category A
        (1  ,@mon           ,2  ), -- Stream001
        (1  ,@mon           ,2  ),
        (1  ,@tue           ,2  ),
        (1  ,@tue           ,2  ),
        (1  ,@wed           ,3  ),
        (1  ,@wed           ,2  ),
        (1  ,@thu           ,2  ),
        (1  ,@thu           ,2  ),
        (1  ,@fry           ,2  ),
        (1  ,@fry           ,1  ),
        (1  ,@mon+7         ,1  ),
        (1  ,@mon+7         ,1  ),
        (1  ,@tue+7         ,3  ),
        (1  ,@tue+7         ,4  ),
        (1  ,@wed+7         ,2  ),
        (1  ,@wed+7         ,1  ),
        (1  ,@thu+7         ,2  ),
        (1  ,@thu+7         ,2  ),
        (1  ,@fry+7         ,4  ),
        (1  ,@fry+7         ,2  ),
        (2  ,@mon           ,2  ), -- Stream002
        (2  ,@mon           ,4  ),
        (2  ,@tue           ,4  ),
        (2  ,@tue           ,2  ),
        (2  ,@wed           ,3  ),
        (2  ,@wed           ,2  ),
        (2  ,@thu           ,2  ),
        (2  ,@thu           ,2  ),
        (2  ,@fry           ,2  ),
        (2  ,@fry           ,1  ),

        -- Category B
        (5  ,@mon           ,2  ), -- Stream005
        (5  ,@tue           ,2  ),
        (5  ,@wed           ,2  ),
        (5  ,@thu           ,2  ),
        (5  ,@fry           ,2  ),

        -- Category C
        (10 ,@mon           ,1  ), -- Stream010
        (10 ,@mon           ,2  ),
        (10 ,@tue           ,2  ),
        (10 ,@tue           ,3  ),
        (10 ,@fry           ,2  ),
        (10 ,@fry           ,4  ),

        (11 ,@wed           ,4  ), -- Stream011
        (11 ,@wed           ,1  ),
        (11 ,@thu           ,2  ),
        (11 ,@thu           ,3  )

（注意：我不知道它是否感兴趣，但通常我使用这种方法：Web Form code-behind -> WebService -> Core -> Repository，使用实体和 DTO 在不同级别之间进行通信）

Answer 1

您可以考虑使用日历表（这对于许多与日期相关的计算很有用...

这是一个参考：https://www.mssqltips.com/sqlservertip/4054/creating-a-date-dimension-or-calendar-table-in-sql-server/

使用此表，您可以将日期键加入相关日期，然后按日历表中的其他字段进行分组；通过它的声音年和周。这应该可以让您轻松地每周报告一次