Question

我回到了这个问题。这是我的表，其中包含一些记录：

CREATE TABLE [dbo].[test](
    [reportID] [int] NOT NULL,
    [caseID] [int] NOT NULL,
    [carriedOver] [bit] NULL,
    [oldReportID] [int] NULL
) ON [PRIMARY]
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (304, 4, 1, NULL)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (305, 4, 0, NULL)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (306, 4, 1, 304)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (309, 4, 1, 306)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (311, 4, 0, NULL)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (312, 4, 1, 309)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (100, 1, 0, NULL)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (418, 8, 0, NULL)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (436, 8, 1, NULL)
GO
INSERT [dbo].[test] ([reportID], [caseID], [carriedOver], [oldReportID]) 
VALUES (438, 8, 0, 436)
GO

所需的输出如下：

对于CaseID = 4，我应该取回ReportID：304、306、309和312

对于CaseID = 1，我应该只返回ReportID：100

对于CaseID = 8，我应该只返回ReportID：418

当第一个报告及其结转内容一起结转时，基本上可以获得一串结转的reportID。如果第一个报告没有结转，则应仅返回该报告。

建议的解决方案是：

declare @caseID int = 4
SELECT t.reportID
FROM dbo.test t
 WHERE ( exists ( SELECT 1 FROM dbo.test t1 WHERE t1.reportID = t.oldReportID and t1.caseID = @caseID ) or
         exists ( SELECT 1 FROM dbo.test t2 WHERE t2.oldReportID = t.reportID and t2.caseID = @caseID )  )
and caseID = @caseID
ORDER BY 1 asc

这对于CaseID = 4正常工作，但对于CaseID = 1或CaseID = 8则失败。

有什么建议吗？

Answer 1

我认为您可以通过以下查询解决问题

    DECLARE @caseID INT = 4
    DECLARE @ftrptID INT = (Select MIN(reportID) from dbo.test where caseID=@caseID )
    if EXISTS(Select 1 from dbo.test where carriedOver=1 and reportID=@ftrptID)
    BEGIN
        SELECT t.reportID
        FROM dbo.test t
         WHERE ( exists ( SELECT 1 FROM dbo.test t1 WHERE t1.reportID = t.oldReportID and t1.caseID = @caseID ) or
                 exists ( SELECT 1 FROM dbo.test t2 WHERE t2.oldReportID = t.reportID and t2.caseID = @caseID )  )
        and caseID = @caseID
        ORDER BY 1 asc
    END
    ELSE

        SELECT t.reportID
        FROM dbo.test t
        where reportID=@ftrptID

在表格中查询相关的旧报表

1 个答案: