Procedimiento almacenado en SQL Server

[Tauro78]

Este es el codigo completo del SP, gracias

-- ================================================
-- Template generated from Template Explorer using:
-- Create Procedure (New Menu).SQL
--
-- Use the Specify Values for Template Parameters
-- command (Ctrl-Shift-M) to fill in the parameter
-- values below.
--
-- This block of comments will not be included in
-- the definition of the procedure.
-- ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
CREATEPROCEDURE [dbo].[SP_EXISTE_EMPRESA]
-- Add the parameters for the stored procedure here
@SP_NOMBRE NVARCHAR(50),
@NOMBRE NVARCHAR(50) OUTPUT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SELECT EMPRESAS.NOMBRE FROM EMPRESAS
WHERE EMPRESAS.NOMBRE = @SP_NOMBRE
RETURN @NOMBRE
-- Insert statements for procedure here
END
GO