Question : What is wrong with the scaler function

when i run it a get Incorrect syntax near the keyword 'RETURN'.

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USE [CopyOf_Bidtracer]
GO
/****** Object:  UserDefinedFunction [dbo].[sf_CalendarsFoldersView]    Script Date: 08/20/2010 15:34:08 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
Create FUNCTION [dbo].[sf_CalendarsFoldersView]
(
      -- Add the parameters for the function here
      @BidID varchar(35),  @companyID varchar(25), @IntCount int, @returnvalue INT, @returnstring varchar(25)
)

RETURNS INT
AS
BEGIN
	
	SELECT @returnvalue = dbo.sf_ReturnFolderCount(@BidID,@companyID, 'Plans' )


IF @returnvalue > 0
	SET @ReturnString = '<img alt = "cal-Plan" scr = "">'
ELSE
	SET  @ReturnString = ''
END

RETURN @ReturnString

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USE [CopyOf_Bidtracer]
GO
/****** Object:  UserDefinedFunction [dbo].[sf_CalendarsFoldersView]    Script Date: 08/20/2010 15:34:08 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
Create FUNCTION [dbo].[sf_CalendarsFoldersView]
(
      -- Add the parameters for the function here
      @BidID varchar(35),  @companyID varchar(25), @IntCount int, @returnvalue INT, @returnstring varchar(25)
)

RETURNS INT
AS
BEGIN
	
	SELECT @returnvalue = dbo.sf_ReturnFolderCount(@BidID,@companyID, 'Plans' )


IF @returnvalue > 0
	SET @ReturnString = '<img alt = "cal-Plan" scr = "">'
ELSE
	SET  @ReturnString = ''
END

RETURN @ReturnString

Answer : What is wrong with the scaler function

Select DestID, Description, Addr1, Addr2, City, Deleted
FROM
(
SELECT DestID, Description, Addr1, Addr2, City, Deleted,
--- row_number() - best to check books online
--- in brief, it allows you to analytically number the rows based on a particular order
--- you can also break up the data (partition), in this case each new description restarts the row number
rn=row_number() over (partition by Description order by DestID desc)
FROM tblDestination
WHERE Description IS NOT NULL
-- WHERE Description > '' --- omit nulls and empty strings
--and Deleted != 0 ---- assuming deleted is bit?
and Deleted != 'false ' --- string 'false'
) SQ
--- this filters the subquery for where the rn value is 1, i.e. the first record in a partition
Where rn=1

To see what it actually does, run the below on its own

SELECT DestID, Description, Addr1, Addr2, City, Deleted,
rn=row_number() over (partition by Description order by DestID desc)
FROM tblDestination
WHERE Description IS NOT NULL
-- WHERE Description > '' --- omit nulls and empty strings
--and Deleted != 0 ---- assuming deleted is bit?
and Deleted != 'false ' --- string 'false'
ORDER BY Description, DestID desc