如果日期范围内的另一个表中没有收集日期，则SQL Server会从一个表中选择行

Question

我有两个表，一个是客户团队，另一个是CHeader，当我在客户团队中输入记录时，我应该在CHeader中收集数据（带有种类列数据作为＆＃39; Ini Test＆＃39;）天。如果7天过去并且没有为该客户收集Cheader数据，那么我应该能够在查询输出中获得这些结果。注意：仅适用于＆＃39; Ini测试＆＃39;是这种情况下的有效数据。以下是查询。

            CREATE TABLE [dbo].[ClientTeam](
        [ClientTeamID] [int] IDENTITY(1,1) NOT NULL,
        [TeamID] [int] NOT NULL,
        [ClientID] [int] NOT NULL,
        [Startdate] [smalldatetime] NOT NULL,
        CONSTRAINT [PK15] PRIMARY KEY NONCLUSTERED 
        (
        [ClientTeamID] ASC
        )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY =   OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 80) ON  [PRIMARY]
        ) ON [PRIMARY]

        GO

        insert into [ClientTeam] ([TeamID],[ClientID],[Startdate]) values(123,1,   GETDATE())
        insert into [ClientTeam] ([TeamID],[ClientID],[Startdate]) values(12,23, DATEdiff(day,2,GETDATE()))
        insert into [ClientTeam] ([TeamID],[ClientID],[Startdate]) values(12,25, DATEdiff(day,3,GETDATE()))


        CREATE TABLE [dbo].[CHeader](
        [CHID] [int] IDENTITY(1,1) NOT NULL,
        [ClientID] [int] NOT NULL,
        [TeamID] [int] NOT NULL,
        [CreateDate] [datetime] NOT NULL,
        [Kind] [varchar](80) NOT NULL,
        CONSTRAINT [PK22] PRIMARY KEY NONCLUSTERED 
        (
        [CHID] ASC
        )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 80) ON   [PRIMARY]
        ) ON [PRIMARY]

        GO



        insert into [CHeader] ([ClientID],[TeamID],[CreateDate],[Kind])   values(1,123,DATEdiff(HOUR,4,GETDATE()),'Ini Test')
        insert into [CHeader] ([ClientID],[TeamID],[CreateDate],[Kind]) values(5,123,DATEdiff(HOUR,4,GETDATE()),'Gen Test')
        insert into [CHeader] ([ClientID],[TeamID],[CreateDate],[Kind]) values(6,126,DATEdiff(HOUR,4,GETDATE()),'XYZ')
        insert into [CHeader] ([ClientID],[TeamID],[CreateDate],[Kind]) values(23,126,DATEdiff(HOUR,5,GETDATE()),'XYZ')

Answer 1

根据我的理解，您希望从ClientTeam获取数据，并且只根据提到的标准将其加入CHeader。

我想从ClientTeam中选择并选择左连接到CHeader。你可以加入 C.ClientID = CH.ClientID AND C.StartDate＆gt; DATEADD（DAY，-7，CH.CreateDate）和CH.Kind =＆＃39; Ini Test＆＃39;