SQL Server gespeicherte Prozedur mehrere IF-Anweisungen

Question

Ich habe eine gespeicherte SQL Server-Prozedur mit drei Bedingungen. Derzeit ist nur der erste IF Block egal, die Parameter ausführen:

SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER OFF 
GO 

/* 
DESCRIPTION: Assigns/reassigns orders in [GIS].[dbo].[QCOrders] 
PARAMETERS: 
    @FldrInitKey VARCHAR(30) = NULL, 
    @UserName  VARCHAR(20) = NULL, 
    @QCTrack  DECIMAL(6,2), 
    @WF    BIT, 
    @idQC   INT   = NULL 
RETURNS: 
    @RC 0 (success), 1 (failure) 
EXAMPLE: 
    EXEC spQCAssignOrders '889G1Pt', 'arajendran', '2016.10', '0', NULL 
MODIFICATIONS: 
    03/10/2016 A.Rajendran Created 
*/ 

ALTER PROCEDURE [dbo].[spQCAssignOrders] 
    @FldrInitKey VARCHAR(30) = NULL, 
    @UserName VARCHAR(20) = NULL, 
    @QCTrack  DECIMAL(6,2), 
    @WF   BIT, 
    @idQC  INT = NULL 
AS 
    SET NOCOUNT ON 
    SET ROWCOUNT 0 
    SET XACT_ABORT ON 

BEGIN TRY 
    /* Declare and initialize variables */ 
    DECLARE @RC INT, @TranCount INT 

    SELECT 
     @RC = 0, @TranCount = @@TRANCOUNT 

    IF @TranCount = 0 
    BEGIN TRANSACTION 
     IF @idQC IS NOT NULL 
     BEGIN 
      UPDATE [GIS].[dbo].[QCOrders] 
      SET UserName = @UserName, 
       AssignedDte = CASE 
           WHEN @UserName IS NULL 
            THEN NULL 
            ELSE GETDATE() 
           END, 
       Unable = NULL, 
       Error = NULL, 
       CompletedDate = NULL, 
       AdminCheck = NULL 
      WHERE 
       idQC = @idQC 
     END 

     IF @FldrInitKey IS NOT NULL 
     BEGIN 
      UPDATE [GIS].[dbo].[QCOrders] 
      SET UserName = @UserName, 
       AssignedDte = GETDATE() 
      WHERE 
       QCTrack = @QCTrack 
       AND FldrInitKey = @FldrInitKey 
       AND WellsFargo = @WF 
       AND UserName IS NULL 
       AND Unable <> 1 
     END 

     IF @FldrInitKey IS NULL 
     BEGIN 
      UPDATE [GIS].[dbo].[QCOrders] 
      SET UserName = @UserName, 
       AssignedDte = GETDATE() 
      WHERE 
       QCTrack = @QCTrack 
       AND WellsFargo = @WF 
       AND UserName IS NULL 
       AND Unable <> 1 
     END 

     IF @TranCount = 0 AND (XACT_STATE()) = 1 
      COMMIT TRANSACTION 
    END TRY 
    BEGIN CATCH 
     IF (XACT_STATE()) = -1 
      ROLLBACK TRANSACTION 

     EXEC [TOD].[dbo].[spRethrowError] 
     SET @RC = 1 
    END CATCH 

    SET NOCOUNT OFF 
    SET ROWCOUNT 0 

    RETURN @RC 


GRANT EXECUTE ON [GIS].[dbo].[spQCAssignOrders] TO db_allowexec 

Wenn ich dies ausführen möchten:

EXEC spQCAssignOrders '889G1Pt', 'arajendran', '2016.10', '0', NULL 

die zweite IF-Anweisung ausgeführt werden soll, aber es funktioniert nicht. Warum?

Klärung

zweiten IF-Anweisung:

IF @FldrInitKey IS NOT NULL 
BEGIN 
    UPDATE [GIS].[dbo].[QCOrders] 
    SET UserName = @UserName, 
     AssignedDte = GETDATE() 
    WHERE 
     QCTrack = @QCTrack 
     AND FldrInitKey = @FldrInitKey 
     AND WellsFargo = @WF 
     AND UserName IS NULL 
     AND Unable <> 1 
END 

Answer 1

Man könnte dies erheblich vereinfachen. Alle drei Update-Anweisungen können in eine einzige Update-Anweisung umgewandelt werden. Dies sollte das Äquivalent aller drei sein.

UPDATE [GIS].[dbo].[QCOrders] 
       SET 
        UserName = @UserName, 
        AssignedDte = 
        CASE  
         WHEN @idQC IS NOT NULL and @UserName IS NULL THEN NULL 
         ELSE GETDATE() 
        END 

      WHERE QCTrack   = @QCTrack 
        AND FldrInitKey = ISNULL(@FldrInitKey, FldrInitKey) 
        AND WellsFargo = @WF 
        AND UserName IS NULL 
        AND Unable <> 1