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Hoe voeg ik twee of meer rijen samen op basis van hun externe sleutel?

Dit is de query die twee rijen samenvoegt op basis van een externe sleutel (overtreedt de regel van 1NF).

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

Dit is wat ik krijg voor de vraag:

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

Dit is wat ik nu krijg:

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

Voor de geïnteresseerden zijn dit de tabelstructuren:

    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())
)


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