‫حذف کاراکتر های ناخواسته توسط Recursive CTE قسمت دوم

CREATE TABLE Data 
(
id INTEGER NOT NULL PRIMARY KEY IDENTITY,
data VARCHAR(50) NOT NULL
);

INSERT INTO Data
VALUES ('~!hasan @#$%^&*(reza)[ali]^^^^^^^^'),
('(Ja[][][]va~!@#$*d-mohammad)'),
('Mohammad'), ('Maryam');

CREATE TABLE Unwanted
(
id INT NOT NULL PRIMARY KEY IDENTITY, 
chars CHAR(1) NOT NULL UNIQUE
);

INSERT Unwanted 
VALUES ('~'),('!'),('@'),('#'),('$'),('%'),
('['),(']'),('^'),('&'),('*');

WITH pre AS
(
SELECT ROW_NUMBER() OVER(ORDER BY id) AS id, chars
  FROM Unwanted
),
 cte AS
(
SELECT  data.id,
        nbr,
        CAST(Data AS VARCHAR(50)) AS Data
  FROM Data
       CROSS JOIN (SELECT COUNT(*) AS nbr FROM Unwanted)t
 WHERE EXISTS
       (SELECT *
          FROM Unwanted
         WHERE Data LIKE '%#' + chars + '%' ESCAPE '#')
 
 UNION ALL
  
 SELECT C.id,
        nbr - 1,
        CAST(REPLACE(C.data, U.chars, '') AS VARCHAR(50))
   FROM cte AS C
        INNER JOIN pre U
        ON C.nbr = U.id
  WHERE nbr > 0
)
SELECT data
  FROM cte
 WHERE nbr = 0
 
 UNION ALL
  
SELECT data
  FROM Data
 WHERE NOT EXISTS
       (SELECT id           
          FROM cte
         WHERE cte.id = data.id);