Question

我有一个存储过程，我正在尝试使用IF ELSE条件。

Alter procedure spInsertVirtualTransactions
(    
    @TerminalID varchar(8),    
    @Pan varchar(20),    
    @Product varchar(4)
)
AS

DECLARE @TERMINALNEWID VARCHAR(8)        

select @TERMINALNEWID=TERMINALID FROM TERMINAL WHERE TerminalID=@TerminalID  

Declare 
    @PlatinumLimitTaxi int = 4,
    @PlatinumLimitAirportLounge int = 4,
    @PlatinumLimitRoadAssistance int = 4,
    @GoldLimitTaxi int = 0,
    @GoldLimitAirportLounge int = 2,
    @GoldLimitRoadAssistance int = 0

Declare
    @CardTypeId int = (Select Card.CardTypeId From Card Where Card.EmbossLine=@PAN),
    @CardType int    

if (@CardTypeId=1)    
begin    
    Set @CardType=1    
end 
else 
begin
    if (@CardTypeId=2)
    begin
        Set @CardType=2
    End 
End
----------------------------------checking visits------------------------------------------------
Declare @VisitTaxi int = (Select SUM(Quantity) from POS_Transactions where (Product = '1' And PAN=@Pan))
Declare @VisitAirport int = (Select SUM(Quantity) from POS_Transactions where (Product = '2' And PAN=@Pan))


-----------------------------------taxi-----------------------------------------------------------
if (@Product ='1')
begin
    if (@CardType=1 and (@PlatinumLimitTaxi-@VisitTaxi) > 0)
    begin

         INSERT INTO pos_transactions        
         (TransactionDate, TerminalID, BatchNumber, SequenceNumber, Pan, TransactionTypeID, SettlementDate, Product, Quantity)
         VALUES        
         (GetDate(),@TERMINALNEWID, 0, -1, @Pan, 0, GETDATE(), @Product, 1)

         PRINT N'Platinum Taxi visits inserted.'
    end

    else    
    begin    
        Raiserror('Visits for Platinum Taxi have exceeded',16,1)    
        return    
    end

    if (@CardType=2 and (@GoldLimitTaxi-@VisitTaxi) > 0)    
    begin    
        INSERT INTO pos_transactions
        (TransactionDate, TerminalID, BatchNumber, SequenceNumber, Pan, TransactionTypeID, SettlementDate, Product, Quantity)       
        VALUES        
        (GetDate(), @TERMINALNEWID, 0, -1, @Pan, 0, GETDATE(), @Product, 1)

        PRINT N'Gold Taxi visits inserted.'
    end

    else    
    begin       
        Raiserror('Visits for Gold Taxi have exceeded the limit',16,1)    
        return      
    end
end

----------------------------------Airport-------------------------------------------------------
if (@Product='2')
begin
    if (@CardType=1 and (@PlatinumLimitAirportLounge-@VisitAirport) > 0)
    begin
        INSERT INTO pos_transactions        
        (TransactionDate, TerminalID, BatchNumber, SequenceNumber, Pan, TransactionTypeID, SettlementDate, Product, Quantity)       
        VALUES        
        (GetDate(), @TERMINALNEWID, 0, -1, @Pan, 0, GETDATE(), @Product, 1) 

        PRINT N'Platinum Airport visits inserted.'
    end

    else    
    begin

        Raiserror('Visits for Platinum Airport Lounge have exceeded',16,1)
        return

    end

    if (@CardType=2 and (@GoldLimitAirportLounge-@VisitAirport) > 0)
    begin
        INSERT INTO pos_transactions        
        (TransactionDate, TerminalID, BatchNumber, SequenceNumber, Pan, TransactionTypeID, SettlementDate, Product, Quantity)
        VALUES
        (GetDate(), @TERMINALNEWID, 0, -1, @Pan, 0, GETDATE(), @Product, 1)

        PRINT N'Gold Airport visits inserted.'
    end

    else    
    begin

        Raiserror('Visits for Gold Airport Lounge have exceeded the limit',16,1)
        return
    end
end

假设我使用以下参数调用Stored Procedure

spInsertVirtualTransactions '00000001','22010402','2'

我应该得到

插入白金机场访问

但它也进入了第二个IF块，因此上面的消息我也得到了这个消息

黄金机场贵宾室的访问量已超出限额

这意味着它也会进入第二个IF块。我怎样才能改善这种状况。我可以使用ELSE IF吗？

Answer 1

在sql server中if..elseif..else的抱歉语法是

IF
Begin
....
END
ELSE IF
Begin
......
END
Else
...
END

In Your program

if (@Product ='1') 
    Begin
      if (@CardType=1) 
      Begin
         if (@PlatinumLimitTaxi-@VisitTaxi) > 0) 
         Begin
            ……..
         end
         else
         begin
                 ………….
         end
      end
     Else if (@CardType=2)
      begin
        if (@GoldLimitTaxi-@VisitTaxi) > 0) 
        Begin
         ………..
       end
        else
        begin
        ………
        end
      End
    End

----------------------------------Airport-------------------------------------------------------
if (@Product='2') 
Begin
    if (@CardType=1)
    Begin
      if (@PlatinumLimitAirportLounge-@VisitAirport) > 0)
      begin
      ……
     end
      Else
      begin
      ….
      End
   end

  Else if (@CardType=2)
  begin
      If (@GoldLimitAirportLounge-@VisitAirport) > 0)
      Begin
       …….
     end
     Else
     begin
       …..
      end
   end
end

如何在SQL语句中使用IF ELSE

1 个答案: