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-- First Stored Procedure
CREATE PROCEDURE SquareSP
@MyFirstParam INT
AS
DECLARE @MyFirstParamSquare INT
SELECT @MyFirstParamSquare = @MyFirstParam*@MyFirstParam
-- Additional Code
RETURN (@MyFirstParamSquare)
GO

Now let us create second Stored Procedure which gives us area of the circle.

-- Second Stored Procedure
CREATE PROCEDURE FindArea
@SquaredParam INT
AS
DECLARE @AreaofCircle FLOAT
SELECT @AreaofCircle = @SquaredParam * PI()
RETURN (@AreaofCircle)
GO

You can clearly see that we need to pass the result of the first stored procedure (SquareSP) to second stored procedure (FindArea). We can do that by using following method:

-- Pass One Stored Procedure's Result as Another Stored Procedure's Parameter
DECLARE @ParamtoPass INT, @CircleArea FLOAT
-- First SP
EXEC @ParamtoPass = SquareSP 5
-- Second SP
EXEC @CircleArea = FindArea @ParamtoPass
SELECT @CircleArea FinalArea
GO

You can see that it is extremely simple to pass the result of the first stored procedure to second procedure.

You can clean up the code by running the following code.

-- Clean up
DROP PROCEDURE SquareSP
DROP PROCEDURE FindArea
GO