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How to Set the Value of a Parameter Within in a Stored Procedure

Posted on 2009-04-07
6
177 Views
Last Modified: 2012-05-06
I need to set the value of @ToDate
Can I set the parameter value within the stored procedure statement instead of passing it into the stored procedure?

ALTER PROCEDURE [dbo].[usp_getWatchList]
      -- Add the parameters for the stored procedure here
      @ToDate datetime    
AS

@ToDate=(SELECT MAX(QuoteDate) FROM Table1 WHERE MarketID=1)
-- This does not work. How can I set the value of @ToDate ?

SELECT * FROM Table2
WHERE Table2.QuoteDate = @ToDate
0
Comment
Question by:Dovberman
  • 3
  • 3
6 Comments
 
LVL 28

Expert Comment

by:TextReport
ID: 24088049
You can etiher
SELECT @ToDate=(SELECT MAX(QuoteDate) FROM Table1 WHERE MarketID=1)
or
SET @ToDate=(SELECT MAX(QuoteDate) FROM Table1 WHERE MarketID=1)
Cheers, Andrew
0
 

Author Comment

by:Dovberman
ID: 24089104
I am not sure how to use this suggestion.

The SP usp_getWatchList shown in the code snippet compiles.

However,
exec usp_getWatchList
@UserID = 'BA275A68-9E77-4301-9D97-7CC7DFECDA0D',
@FromDate = '2009-01-23'  

displays the following error:

Msg 201, Level 16, State 4, Procedure usp_getWatchList, Line 0
Procedure or function 'usp_getWatchList' expects parameter '@ToDate', which was not supplied.


What am I missing?
thanks,

ALTER PROCEDURE [dbo].[usp_getWatchList]
	-- Add the parameters for the stored procedure here
	@UserID varchar(50), 
	@ToDate datetime,   
	@FromDate datetime 
 
AS
 
/* 
exec usp_getWatchList
@UserID = 'BA275A68-9E77-4301-9D97-7CC7DFECDA0D',
@ToDate = '2009-02-27', 
@FromDate = '2009-01-23' 
*/
 
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;
 
    -- Insert statements for procedure here
SET @ToDate=(SELECT MAX(QuoteDate) FROM DownLoadDates WHERE MarketID=1)
 
 
SELECT 
w.SymbolID
, s1.SymbolName
, sym.SecName
, w.MarketID
, mkt.MarketName 
, w.PickDate
, DATEDIFF(day, w.PickDate, GETDATE()) AS DaysonList 
, s1.ClosePrice AS PickPrice
, s2.ClosePrice AS CurrentPrice
, (SELECT ClosePrice FROM StockHist  
WHERE QuoteDate = @FromDate AND SymbolID = w.symbolID) AS StartPrice  
, s2.ClosePrice - s1.ClosePrice AS PriceChange   
, ((s2.ClosePrice - s1.ClosePrice) *100) /s1.ClosePrice AS PctChange
FROM Watchlist w INNER JOIN
   StockHist s1 ON w.SymbolID = s1.SymbolID AND w.PickDate = s1.QuoteDate INNER JOIN
   StockHist s2 ON w.SymbolID = s2.SymbolID AND s2.QuoteDate = @ToDate INNER JOIN 
   Symbol sym ON w.SymbolID = sym.SymbolID  INNER JOIN 
   Market mkt ON mkt.MarketID = sym.MarketID  
WHERE w.UserID=@UserID 
ORDER BY PriceChange DESC 
END

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0
 
LVL 28

Expert Comment

by:TextReport
ID: 24089244
You have not passed a value for the parameter @ToDate as demonstrated in Line 12, Line 22 is not required, this would be used for an output parameter and the way you are rnning the code you should be passing the @ToDate
Cheers, Andrew
exec usp_getWatchList
@UserID = 'BA275A68-9E77-4301-9D97-7CC7DFECDA0D',
@ToDate = '2009-02-27', 
@FromDate = '2009-01-23'

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Author Comment

by:Dovberman
ID: 24089595
My intention is not to pass the @ToDate but to declare and set the @ToDate within the Stored Procedure.

Is this possible?

0
 
LVL 28

Accepted Solution

by:
TextReport earned 250 total points
ID: 24089625
Yes remove it from the paramters section and change it to a DECLARE
Cheers, Andrew
ALTER PROCEDURE [dbo].[usp_getWatchList]
	-- Add the parameters for the stored procedure here
	@UserID varchar(50), 
	@FromDate datetime 
 
AS
DECLARE 	@ToDate datetime
 
/* 
exec usp_getWatchList
@UserID = 'BA275A68-9E77-4301-9D97-7CC7DFECDA0D',
@ToDate = '2009-02-27', 
@FromDate = '2009-01-23' 
*/
 
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;
 
    -- Insert statements for procedure here
SET @ToDate=(SELECT MAX(QuoteDate) FROM DownLoadDates WHERE MarketID=1)
 
 
SELECT 
w.SymbolID
, s1.SymbolName
, sym.SecName
, w.MarketID
, mkt.MarketName 
, w.PickDate
, DATEDIFF(day, w.PickDate, GETDATE()) AS DaysonList 
, s1.ClosePrice AS PickPrice
, s2.ClosePrice AS CurrentPrice
, (SELECT ClosePrice FROM StockHist  
WHERE QuoteDate = @FromDate AND SymbolID = w.symbolID) AS StartPrice  
, s2.ClosePrice - s1.ClosePrice AS PriceChange   
, ((s2.ClosePrice - s1.ClosePrice) *100) /s1.ClosePrice AS PctChange
FROM Watchlist w INNER JOIN
   StockHist s1 ON w.SymbolID = s1.SymbolID AND w.PickDate = s1.QuoteDate INNER JOIN
   StockHist s2 ON w.SymbolID = s2.SymbolID AND s2.QuoteDate = @ToDate INNER JOIN 
   Symbol sym ON w.SymbolID = sym.SymbolID  INNER JOIN 
   Market mkt ON mkt.MarketID = sym.MarketID  
WHERE w.UserID=@UserID 
ORDER BY PriceChange DESC 
END 
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Author Closing Comment

by:Dovberman
ID: 31567542
Just what I needed. Thanks,
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