试试这个;对于多个输出参数，它工作得很好:

CREATE PROCEDURE [endicia].[credentialLookup]
@accountNumber varchar(20),
@login varchar(20) output,
@password varchar(50) output
AS
BEGIN
SET NOCOUNT ON;
SELECT top 1 @login = [carrierLogin],@password = [carrierPassword]
  FROM [carrier_account] where carrierLogin = @accountNumber
  order by clientId, id
END

Try for the result: 
SELECT *FROM [carrier_account] 
DECLARE @login varchar(20),@password varchar(50)
exec [endicia].[credentialLookup] '588251',@login OUTPUT,@password OUTPUT
SELECT 'login'=@login,'password'=@password

下面是存储过程

create procedure sp1
(
@id as int,
@name as nvarchar(20) out
)
as
begin
select @name=name from employee where id=@id
end

这是执行这个过程的方法

 declare @name1 nvarchar(10)
    exec sp1 1,@name1 out
    print @name1

从过程返回val

ALTER PROCEDURE testme @input  VARCHAR(10),
                       @output VARCHAR(20) output
AS
  BEGIN
      IF @input >= '1'
        BEGIN
            SET @output = 'i am back';

            RETURN;
        END
  END

DECLARE @get VARCHAR(20);

EXEC testme
  '1',
  @get output

SELECT @get 

请查看下面的示例，通过执行存储过程获得输出变量值。

    DECLARE @return_value int,
    @Ouput1 int,
    @Ouput2 int,
    @Ouput3 int

EXEC    @return_value = 'Your Sp Name'
        @Param1 = value1,
        @Ouput1 = @Ouput1 OUTPUT,
        @Ouput2 = @Ouput2 OUTPUT,
        @Ouput3 = @Ouput3 OUTPUT

SELECT  @Ouput1 as N'@Ouput1',
        @Ouput2 as N'@Ouput2',
        @Ouput3 as N'@Ouput3'

你可以这样做:

declare @rowCount int
exec yourStoredProcedureName @outputparameterspOf = @rowCount output

CREATE PROCEDURE DBO.MY_STORED_PROCEDURE
(@PARAM1VALUE INT,
@PARAM2VALUE INT,
@OUTPARAM VARCHAR(20) OUT)
AS 
BEGIN
SELECT * FROM DBO.PARAMTABLENAME WHERE PARAM1VALUE=@PARAM1VALUE
END

DECLARE @OUTPARAM2 VARCHAR(20)
EXEC DBO.MY_STORED_PROCEDURE 1,@OUTPARAM2 OUT
PRINT @OUTPARAM2