How to use the out parameter and In/out parameter while executing the procedure?

For the out parameters we need to mention the Out explicitly with the parameters, below is the sample and details for the same:

-- Create Stored Procedure

CREATE PROCEDURE usp_TestOutParameter

@p_First VARCHAR(50),

@p_Second VARCHAR(50) out

AS

begin

SELECT @p_Second =col2 from input_values where col1=@p_First

End

-- execute procedure via passing the data and getting the data in output values:

declare @V_Second VARCHAR(50)

exec usp_TestOutParameter 'One',@V_Second out

select @V_Second

Now using the out parameter as in/out both the ways:

create PROCEDURE usp_TestInOutParameter

@p_First VARCHAR(50),

@p_Second VARCHAR(50) out

AS

begin

select @p_Second ' Input_value'

SELECT @p_Second =col2+': got from table' from input_values where col1=@p_First and col2=@p_Second –-using the data from the input value

 end

declare @V_Second VARCHAR(50)='Two'

exec usp_TestInOutParameter 'One',@V_Second out

select @V_Second output_value