我有三个表：
A(a1, a2, a3) //This tbl (Table) can have multiple instances of a1, but cause of its dependence on b1, //we have a unique record each time B(b1, a1, b2) //tbl C has a relationship with tbl B through b1. b1 can also have multiple instances, but //sometimes a number of unique records in this table can tie to just one record in the B tbl. C(c1, b1, c2, c3)
例子：
//Table B sample data b1 a1 b2 1 25 paper 2 29 pencil 3 29 parker //Table C sample data c1 b1 c2 c3 1 1 w long 2 2 b long 3 2 g short 4 3 v fat
说明：对于表b B中的记录2，表b C中的记录2和3应该为其形成单个记录。
到目前为止，tbl A可以在tbl B中具有与tbl A不同的多个记录。tblB在tbl C中也可以具有多个记录，但是这些多个记录必须合并为单个记录（如果有复制tbl C中的外键，则应进行合并）。
我希望我在解释我的问题上做得很好。我需要查询才能做到这一点。有人可以帮忙吗？
补充＃1：为了使事情更清楚一点，我将使用面临的实际情况。
每种药物都分为主要类别，子类别和通用名称。
-Main Classification -Sub Classification -Generic Name
每个通用名称都可以具有多个优势：示例：
-TRIMETHOPRIM Strengths: 100mg, 200mg
在某些情况下，您可以拥有一个通用名称，该通用名称是两种药物的组合，并且这两种药物都有各自的优势，在这种通用名称中，优势就算在内。您也可以有多个。例子：
-SULFAMETHOXAZOLE & TRIMETHOPRIM Strengths: 40mg & 8mg/mL, 400mg & 80mg, 800mg & 160mg
因此，为了使我能够跟踪组合的通用名称的各个优点，我需要另一个表。
GenericTbl(Id, Name, ...) GenericDetails(Id, GenericId, ...) Strenghts(Id, GenericDetailsId, Strength, Unit, DosageForm, ...)
我希望这有帮助。
添加＃2我将id更改为整数而不是guid（uniqueidentifier）
Pharmacy_GenericDrug GenericDrugID GenericDrugName DrugSubClassificationID ControlStatusID 1 TRIMETHOPRIM 12 2 2 SULFAME & TRIMETHOPRIM 4 1 Pharmacy_GenericDrugDetails GenericDrugDetailsID GenericDrugID 1 1 2 2 Pharmacy_Strengths StrengthID GenericDrugDetailsID DosageStrength Unit 1 1 200 mg 2 2 80 mg 3 2 8 mg/L For the first#1 GenericDrugID = 1: TRIMETHOPRIM | 12 | 200 | mg | 1 For the second#2 GenericDrugID = 2: SULFAME & TRIMETHOPRIM | 4 | 80 | mg | 8 | mg/L | 1 1 > GenericDrugName | DrugSubClassificationID | DosageSrength | Unit | ControlStatusID 2 > GenericDrugName | DrugSubClassificationID | DosageSrength | Unit | DosageSrength | Unit | ControlStatusID
这是一个基于外键合并两行的查询（违反了1NF的规则）。
DECLARE @StrengthID INT DECLARE @GenericDrugDetailsID INT DEClARE @DosageStrength INT DECLARE @PresentationUnitID INT DECLARE @DosageFormID INT DECLARE @RouteOfAdministrationID INT DECLARE @nCombinations INT DECLARE @maxCombinations INT DECLARE @CurrCombinationTotal INT DECLARE @CurrGenericDrugDetailsID INT DECLARE @PName VARCHAR(100) DECLARE @DName VARCHAR(100) DECLARE @DNameAbbrev VARCHAR(50) DECLARE @RName VARCHAR(100) DECLARE @GetGenericDrugStrengths CURSOR SET @nCombinations = 0 SET @CurrGenericDrugDetailsID = 0 --Get the maximum number of combinations --===================================================================================== SET @maxCombinations = (SELECT TOP 1 COUNT(GenericDrugDetailsID) AS maxCombinations FROM Pharmacy_Strengths GROUP BY GenericDrugDetailsID ORDER BY maxCombinations desc) --===================================================================================== --Create a temporary temp to hold the strengths --===================================================================================== DECLARE @tmpSQL VARCHAR(max) SET @tmpSQL = '' IF EXISTS (SELECT * FROM tempdb.sys.tables WHERE NAME LIKE '%tmpStrengths%') DROP TABLE #tmpStrengths CREATE TABLE #tmpStrengths ( StrengthID INT NOT NULL, GenericDrugDetailsID INT NOT NULL, NumberOfCombinations INT NOT NULL, DosageStrength1 INT NOT NULL, PresentationUnitID1 INT NOT NULL, PresentationUnitName1 VARCHAR(100) NOT NULL, DosageFormID1 INT NOT NULL, DosageFormName1 VARCHAR(100) NOT NULL, DosageFormNameAbbrev1 VARCHAR(50) NULL, RouteOfAdministrationID1 INT NOT NULL, RouteOfAdministrationName1 VARCHAR(100) NOT NULL); IF (@maxCombinations > 1) BEGIN DECLARE @counter int SET @counter = 1 WHILE @counter < @maxCombinations BEGIN SET @counter = @counter + 1 SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD StrengthID' + CAST(@counter AS VARCHAR(50)) + ' INT NULL;' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD DosageStrength' + CAST(@counter AS VARCHAR(50)) + ' INT NULL;' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD PresentationUnitID' + CAST(@counter AS VARCHAR(50)) + ' INT NULL; ' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD PresentationUnitName' + CAST(@counter AS VARCHAR(100)) + ' VARCHAR(100) NULL; ' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD DosageFormID' + CAST(@counter AS VARCHAR(50)) + ' INT NULL; ' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD DosageFormName' + CAST(@counter AS VARCHAR(100)) + ' VARCHAR(100) NULL; ' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD DosageFormNameAbbrev' + CAST(@counter AS VARCHAR(50)) + ' VARCHAR(50) NULL; ' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD RouteOfAdministrationID' + CAST(@counter AS VARCHAR(50)) + ' INT NULL; ' SET @tmpSQL = @tmpSQL + 'ALTER TABLE #tmpStrengths ADD RouteOfAdministrationName' + CAST(@counter AS VARCHAR(100)) + ' VARCHAR(100) NULL; ' END END EXEC(@tmpSQL) --==================================================================================== SET @tmpSQL = '' SET @GetGenericDrugStrengths = CURSOR FOR SELECT StrengthID, GenericDrugDetailsID, DosageStrength, PresentationUnitID, DosageFormID, RouteOfAdministrationID FROM Pharmacy_Strengths ORDER BY GenericDrugDetailsID ASC OPEN @GetGenericDrugStrengths FETCH NEXT FROM @GetGenericDrugStrengths INTO @StrengthID, @GenericDrugDetailsID, @DosageStrength, @PresentationUnitID, @DosageFormID, @RouteOfAdministrationID WHILE @@FETCH_STATUS = 0 BEGIN --Get the values of Presentation Unit, Dosage Form, and Route of Administration. SELECT @PName = PresentationUnitName FROM Pharmacy_PresentationUnit WHERE PresentationUnitID = @PresentationUnitID SELECT @DName = DosageFormName, @DNameAbbrev = DosageFormNameAbbrev FROM Pharmacy_DosageForm WHERE DosageFormID = @DosageFormID SELECT @RName = RouteOfAdministrationName FROM Pharmacy_RouteOfAdministration WHERE RouteOfAdministrationID = @RouteOfAdministrationID IF (@GenericDrugDetailsID = @CurrGenericDrugDetailsID) BEGIN SET @nCombinations = (@nCombinations + 1) --Alter the temporary table now SET @tmpSQL = @tmpSQL + 'UPDATE #tmpStrengths SET StrengthID' + CAST(@nCombinations AS VARCHAR(50)) + ' = ' + CAST(@StrengthID AS VARCHAR(50)) + ', DosageStrength' + CAST(@nCombinations AS VARCHAR(50)) + ' = ' + CAST(@DosageStrength AS VARCHAR(50)) + ', PresentationUnitID' + CAST(@nCombinations AS VARCHAR(50)) + ' = ' + CAST(@PresentationUnitID AS VARCHAR(50)) + ', PresentationUnitName' + CAST(@nCombinations AS VARCHAR(50)) + ' = ''' + CAST(@PName AS VARCHAR(100)) + ''', DosageFormID' + CAST(@nCombinations AS VARCHAR(50)) + ' = ' + CAST(@DosageFormID AS VARCHAR(50)) + ', DosageFormName' + CAST(@nCombinations AS VARCHAR(50)) + ' = ''' + CAST(@DName AS VARCHAR(100)) + ''', DosageFormNameAbbrev' + CAST(@nCombinations AS VARCHAR(50)) + ' = ''' + CAST(@DNameAbbrev AS VARCHAR(50)) + ''', RouteOfAdministrationID' + CAST(@nCombinations AS VARCHAR(50)) + ' = ' + CAST(@RouteOfAdministrationID AS VARCHAR(50)) + ', RouteOfAdministrationName' + CAST(@nCombinations AS VARCHAR(50)) + ' = ''' + CAST(@RName AS VARCHAR(100)) + ''' WHERE GenericDrugDetailsID = ' + CAST(@GenericDrugDetailsID AS VARCHAR(50)); EXEC(@tmpSQL); END ELSE BEGIN SET @nCombinations = 1 SET @CurrGenericDrugDetailsID = @GenericDrugDetailsID; --Get the total number of combinations in advance SET @CurrCombinationTotal = (SELECT COUNT(GenericDrugDetailsID) FROM Pharmacy_Strengths WHERE GenericDrugDetailsID = @GenericDrugDetailsID GROUP BY GenericDrugDetailsID); --Insert in the temporary table now INSERT INTO #tmpStrengths (StrengthID, GenericDrugDetailsID, NumberOfCombinations, DosageStrength1, PresentationUnitID1, PresentationUnitName1, DosageFormID1, DosageFormName1, DosageFormNameAbbrev1, RouteOfAdministrationID1, RouteOfAdministrationName1) VALUES (@StrengthID, @GenericDrugDetailsID, @CurrCombinationTotal, @DosageStrength, @PresentationUnitID, @PName, @DosageFormID, @DName, @DNameAbbrev, @RouteOfAdministrationID, @RName) END --PRINT CAST(@StrengthID AS varchar(50)) + ' ' + CAST(@GenericDrugDetailsID AS varchar(50)) + ' ' + CAST(@DosageStrength AS varchar(50)) + ' ' + CAST(@PresentationUnitID AS varchar(50)) + ' ' + CAST(@DosageFormID as varchar(50)) + ' ' + CAST(@RouteOfAdministrationID as varchar(50)) FETCH NEXT FROM @GetGenericDrugStrengths INTO @StrengthID, @GenericDrugDetailsID, @DosageStrength, @PresentationUnitID, @DosageFormID, @RouteOfAdministrationID END --SELECT * from #tmpStrengths CLOSE @GetGenericDrugStrengths DEALLOCATE @GetGenericDrugStrengths SELECT a.GenericDrugID, a.GenericDrugName, f.*, a.InsertDate, a.InsertFKUserAccountId, a.UpdateDate, a.UpdateFKUserAccountId, a.Version FROM Pharmacy_GenericDrug a INNER JOIN Pharmacy_ControlStatus d ON d.ControlStatusID = a.ControlStatusID INNER JOIN Pharmacy_GenericDrugDetails e ON e.GenericDrugID = a.GenericDrugID INNER JOIN #tmpStrengths f ON f.GenericDrugDetailsID = e.GenericDrugDetailsID ORDER BY GenericDrugName ASC
这是我在查询之前得到的：
GenericDrugID GenericDrugName DrugSubClassificationID DrugSubClassificationName DrugClassificationID DrugClassificationName GenericDrugDetailsID DosageStrength PresentationUnitID PresentationUnitName DosageFormID DosageFormName DosageFormNameAbbrev RouteOfAdministrationID RouteOfAdministrationName ControlStatusID ControlStatusName InsertDate InsertFKUserAccountId UpdateDate UpdateFKUserAccountId Version ------------------------------------ ---------------------------------------------------------------------------------------------------- ------------------------------------ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -------------------- -------------- ------------------ ---------------------------------------------------------------------------------------------------- ------------ ---------------------------------------------------------------------------------------------------- -------------------------------------------------- ----------------------- ---------------------------------------------------------------------------------------------------- --------------- ---------------------------------------------------------------------------------------------------- ----------------------- --------------------- ----------------------- --------------------- ----------------------- 83222B76-6690-42F2-BDAD-BE5BD2D19D3B Generic Drug One 8ED135ED-5FDB-419A-9C7D-E788A40EAEAC Drug Subclassification Two 61D618F3-A38A-4416-B0A4-FB29AD614B4B Drug Classification One 2 300 1 ml 2 Pill Pill 1 Mouth 3 Narcotic 2009-10-25 10:10:06.077 1 2009-11-15 07:06:03.733 1 2009-10-25 10:10:06.077 83222B76-6690-42F2-BDAD-BE5BD2D19D3B Generic Drug One 8ED135ED-5FDB-419A-9C7D-E788A40EAEAC Drug Subclassification Two 61D618F3-A38A-4416-B0A4-FB29AD614B4B Drug Classification One 2 400 1 ml 2 Pill Pill 1 Mouth 3 Narcotic 2009-10-25 10:10:06.077 1 2009-11-15 07:06:03.733 1 2009-10-25 10:10:06.077 83222B76-6690-42F2-BDAD-BE5BD2D19D3B Generic Drug One 8ED135ED-5FDB-419A-9C7D-E788A40EAEAC Drug Subclassification Two 61D618F3-A38A-4416-B0A4-FB29AD614B4B Drug Classification One 4 500 1 ml 2 Pill Pill 2 Injection 3 Narcotic 2009-10-25 10:10:06.077 1 2009-11-15 07:06:03.733 1 2009-10-25 10:10:06.077 A1D86FD2-2E65-4F2A-B7A2-7B083B71AB9B Generic Drug Two 9925D762-34B8-43B4-A96B-78374F0081B0 Drug Subclassification One C10E9F1B-3985-4DB8-8EF8-A6C82B004B9F Drug Classification Two 1 200 1 ml 2 Pill Pill 1 Mouth 2 None 2009-10-25 10:47:10.623 1 2009-11-15 04:02:47.890 1 2009-10-25 10:47:10.623
这就是我现在得到的：
GenericDrugID GenericDrugName DrugSubClassificationID DrugSubClassificationName DrugClassificationID DrugClassificationName StrengthID GenericDrugDetailsID NumberOfCombinations DosageStrength1 PresentationUnitID1 PresentationUnitName1 DosageFormID1 DosageFormName1 DosageFormNameAbbrev1 RouteOfAdministrationID1 RouteOfAdministrationName1 StrengthID2 DosageStrength2 PresentationUnitID2 PresentationUnitName2 DosageFormID2 DosageFormName2 DosageFormNameAbbrev2 RouteOfAdministrationID2 RouteOfAdministrationName2 InsertDate InsertFKUserAccountId UpdateDate UpdateFKUserAccountId Version ------------------------------------ ---------------------------------------------------------------------------------------------------- ------------------------------------ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------ -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ----------- -------------------- -------------------- --------------- ------------------- ---------------------------------------------------------------------------------------------------- ------------- ---------------------------------------------------------------------------------------------------- -------------------------------------------------- ------------------------ ---------------------------------------------------------------------------------------------------- ----------- --------------- ------------------- ---------------------------------------------------------------------------------------------------- ------------- ---------------------------------------------------------------------------------------------------- -------------------------------------------------- ------------------------ ---------------------------------------------------------------------------------------------------- ----------------------- --------------------- ----------------------- --------------------- ----------------------- 83222B76-6690-42F2-BDAD-BE5BD2D19D3B Generic Drug One 8ED135ED-5FDB-419A-9C7D-E788A40EAEAC Drug Subclassification Two 61D618F3-A38A-4416-B0A4-FB29AD614B4B Drug Classification One 2 2 2 300 1 ml 2 Pill Pill 1 Mouth 3 400 1 ml 2 Pill Pill 1 Mouth 2009-10-25 10:10:06.077 1 2009-11-15 07:06:03.733 1 2009-10-25 10:10:06.077 83222B76-6690-42F2-BDAD-BE5BD2D19D3B Generic Drug One 8ED135ED-5FDB-419A-9C7D-E788A40EAEAC Drug Subclassification Two 61D618F3-A38A-4416-B0A4-FB29AD614B4B Drug Classification One 4 4 1 500 1 ml 2 Pill Pill 2 Injection NULL NULL NULL NULL NULL NULL NULL NULL NULL 2009-10-25 10:10:06.077 1 2009-11-15 07:06:03.733 1 2009-10-25 10:10:06.077 A1D86FD2-2E65-4F2A-B7A2-7B083B71AB9B Generic Drug Two 9925D762-34B8-43B4-A96B-78374F0081B0 Drug Subclassification One C10E9F1B-3985-4DB8-8EF8-A6C82B004B9F Drug Classification Two 1 1 1 200 1 ml 2 Pill Pill 1 Mouth NULL NULL NULL NULL NULL NULL NULL NULL NULL 2009-10-25 10:47:10.623 1 2009-11-15 04:02:47.890 1 2009-10-25 10:47:10.623
对于那些感兴趣的人，这些是表结构：
CREATE TABLE [dbo].[Pharmacy_GenericDrug]( [GenericDrugID] [uniqueidentifier] NOT NULL CONSTRAINT [DF__Pharmacy___Gener__4E53A1AA] DEFAULT (newid()), [GenericDrugName] [varchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, [DrugSubClassificationID] [uniqueidentifier] NOT NULL, [ControlStatusID] [int] NOT NULL, [InsertDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_GenericDrug_InsertDate] DEFAULT (getdate()), [InsertFKUserAccountId] [int] NOT NULL, [UpdateDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_GenericDrug_UpdateDate] DEFAULT (getdate()), [UpdateFKUserAccountId] [int] NOT NULL, [Version] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_GenericDrug_Version] DEFAULT (getdate()) ) CREATE TABLE [dbo].[Pharmacy_GenericDrugDetails]( [GenericDrugDetailsID] [int] IDENTITY(1,1) NOT NULL, [GenericDrugID] [uniqueidentifier] NOT NULL, [InsertDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_GenericDrugDetails_InsertDate] DEFAULT (getdate()), [InsertFKUserAccountId] [int] NOT NULL, [UpdateDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_GenericDrugDetails_UpdateDate] DEFAULT (getdate()), [UpdateFKUserAccountId] [int] NOT NULL, [Version] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_GenericDrugDetails_Version] DEFAULT (getdate()) ) CREATE TABLE [dbo].[Pharmacy_Strengths]( [StrengthID] [int] IDENTITY(1,1) NOT NULL, [GenericDrugDetailsID] [int] NOT NULL, [DosageStrength] [int] NOT NULL, [PresentationUnitID] [int] NOT NULL, [DosageFormID] [int] NOT NULL, [RouteOfAdministrationID] [int] NOT NULL, [InsertDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_StrengthCombination_InsertDate] DEFAULT (getdate()), [InsertFKUserAccountId] [int] NOT NULL, [UpdateDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_StrengthCombination_UpdateDate] DEFAULT (getdate()), [UpdateFKUserAccountId] [int] NOT NULL, [Version] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_StrengthCombination_Version] DEFAULT (getdate()) ) CREATE TABLE [dbo].[Pharmacy_PresentationUnit]( [PresentationUnitID] [int] IDENTITY(1,1) NOT NULL, [PresentationUnitName] [varchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, [InsertDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_PresentationUnit_InsertDate] DEFAULT (getdate()), [InsertFKUserAccountId] [int] NOT NULL, [UpdateDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_PresentationUnit_UpdateDate] DEFAULT (getdate()), [UpdateFKUserAccountId] [int] NOT NULL, [Version] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_PresentationUnit_Version] DEFAULT (getdate()) ) CREATE TABLE [dbo].[Pharmacy_DosageForm]( [DosageFormID] [int] IDENTITY(1,1) NOT NULL, [DosageFormName] [varchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, [DosageFormNameAbbrev] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, [InsertDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_DosageForm_InsertDate] DEFAULT (getdate()), [InsertFKUserAccountId] [int] NOT NULL, [UpdateDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_DosageForm_UpdateDate] DEFAULT (getdate()), [UpdateFKUserAccountId] [int] NOT NULL, [Version] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_DosageForm_Version] DEFAULT (getdate()) ) CREATE TABLE [dbo].[Pharmacy_RouteOfAdministration]( [RouteOfAdministrationID] [int] IDENTITY(1,1) NOT NULL, [RouteOfAdministrationName] [varchar](100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL, [InsertDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_RouteOfAdministration_InsertDate] DEFAULT (getdate()), [InsertFKUserAccountId] [int] NOT NULL, [UpdateDate] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_RouteOfAdministration_UpdateDate] DEFAULT (getdate()), [UpdateFKUserAccountId] [int] NOT NULL, [Version] [datetime] NOT NULL CONSTRAINT [DF_Pharmacy_RouteOfAdministration_Version] DEFAULT (getdate()) )
