Hi, I am migrating a function from oracle to mssql 2008.This function raises Select statements included within a function cannot return data to a client as error.How can i solve this problem?

Original PLSQL Code

CREATE OR REPLACE function f_birim_cevrim_katsayi (p_ID_MAMUL in number, p_ID_BIRIMDEN in number, p_ID_BIRIME in number) 
return number
is

v_katsayi number;

begin

v_katsayi:=0;

if p_ID_BIRIMDEN!=p_ID_BIRIME then

    for c in (
         select * from CR_BIRIM_CEVRIM
         where ID_MAMUL = p_ID_MAMUL
         and (
         (ID_BIRIM = p_ID_BIRIMDEN and ID_BIRIM2 = p_ID_BIRIME)
         OR ( ID_BIRIM2 = p_ID_BIRIMDEN and ID_BIRIM = p_ID_BIRIME) )
         and VALID = 1) 
         loop

         if c.ID_BIRIM=p_ID_BIRIMDEN then
            v_katsayi:=c.MT_ORAN;
         else
            v_katsayi:=1/c.MT_ORAN;
         end if;
    end loop;
else
    v_katsayi:=1;
end if;

return round(v_katsayi,10);

exception 
when others then 
return 0;

end;

TSQL CODE

If Exists ( SELECT name 
                FROM sysobjects  
                WHERE name = 'f_birim_cevrim_katsayi'
                AND type = 'FN')
        DROP FUNCTION f_birim_cevrim_katsayi
    GO 
    CREATE FUNCTION f_birim_cevrim_katsayi
    (
        @p_ID_MAMUL                               FLOAT ,
        @p_ID_BIRIMDEN                            FLOAT ,
        @p_ID_BIRIME                              FLOAT 
    )
    RETURNS float 
    AS 
        BEGIN


            DECLARE @adv_error INT


            DECLARE @v_katsayi                                FLOAT 
            SELECT @v_katsayi  = 0 
            IF @p_ID_BIRIMDEN != @p_ID_BIRIME 
            BEGIN 


                DECLARE cursor_for_inline_select1 CURSOR LOCAL FOR 
                SELECT *
                FROM  CR_BIRIM_CEVRIM 
                WHERE    ID_MAMUL  = @p_ID_MAMUL
                 AND    ((ID_BIRIM  = @p_ID_BIRIMDEN
                 AND    ID_BIRIM2  = @p_ID_BIRIME)
                 OR (ID_BIRIM2  = @p_ID_BIRIMDEN
                 AND    ID_BIRIM  = @p_ID_BIRIME))
                 AND    VALID  = 1

                OPEN cursor_for_inline_select1 

                FETCH NEXT FROM  cursor_for_inline_select1  
                WHILE (@@FETCH_STATUS <> -1)
                BEGIN
                    IF   c.ID_BIRIM = @p_ID_BIRIMDEN 
                    BEGIN 
                        SELECT @v_katsayi  = c.MT_ORAN 
                    END
                    ELSE
                    BEGIN 
                        SELECT @v_katsayi  = 1/c.MT_ORAN 
                    END

                END
                CLOSE cursor_for_inline_select1
                DEALLOCATE cursor_for_inline_select1

            END
            ELSE
            BEGIN 
                SELECT @v_katsayi  = 1 
            END


     DEALLOCATE cursor_for_inline_select1
            return ROUND(@v_katsayi, 10) 
            GOTO ExitLabel1
            Exception1:

                BEGIN

     DEALLOCATE cursor_for_inline_select1
                return 0 
                            END
            ExitLabel1:

            return ROUND(@v_katsayi, 10) 

        END


    GO