Процедура. Как обработать столбец таблицы

EXEC Var_55 'тут значение параметра'

CREATE proc Var_55 @text NVARCHAR(1000)
AS
DECLARE @i INT,@c CHAR (1),@countA INT,@COUNTЕ1 INT,@COUNTЕ2 INT,
@countI INT,@countO INT,@countU INT,@countIY INT,@countEE INT,@countEU INT,@countEY INT
SET @countA=0
SET @COUNTЕ1=0
SET @COUNTЕ2=0
SET @countI=0
SET @countO=0
SET @countU=0
SET @countIY=0
SET @countEE=0
SET @countEU=0
SET @countEY=0
SET @i = 0
While  @i < len (@text)
BEGIN 
    SET @i=@i+1
    SET @c = SUBSTRING (@text,@i, 1 )
    IF (@c= 'а')
    SET @countA=@countA+1
    IF (@c= 'е')
    SET @COUNTЕ1=@COUNTЕ1+1
    IF (@c= 'ё')
    SET @COUNTЕ2=@COUNTЕ2+1
    IF (@c= 'и')
    SET @countI=@countI+1
    IF (@c= 'о')
    SET @countO=@countO+1
    IF (@c= 'у')
    SET @countU=@countU+1
    IF (@c= 'ы')
    SET @countIY=@countIY+1
    IF (@c= 'э')
    SET @countEE=@countEE+1
    IF (@c= 'ю')
    SET @countEU=@countEU+1
    IF (@c= 'я')
    SET @countEY=@countEY+1
END
SELECT @countA AS [Количество 'a'],@COUNTЕ1 AS [Количество 'е'],@COUNTЕ2 AS [Количество 'ё'],
@countI AS [Количество 'и'],@countO AS [Количество 'о'],@countU AS [Количество 'у'],@countIY AS [Количество 'ы'],
@countEE AS [Количество 'э'],@countEU AS [Количество 'ю'],@countEY AS [Количество 'я']
GO

SELECT Товары.Описание FROM Товары