rot13 Funktion auf MYSQL

Question

Ich habe das ganze Internet auf der Suche nach diesem gesucht.

Jeder hat eine rot13-Funktion auf MySQL?

Edit: Es muss eine Funktion in SQL sein.

Answer 1

Wie wäre es so etwas wie ...

SELECT SUBSTR('nopqrstuvwxyzabcdefghijklm',ASCII('b')-96,1); 

Ich möchte darauf hinweisen, dass ich keine Forschung auf diesem unternommen haben - so könnte ich falsch verstanden, was rot13 ist.

Answer 2

bei Brute-Force-Aus:

CREATE FUNCTION rot13(stringIn VARCHAR(500)) RETURNS VARCHAR(500) 
BEGIN 
    DECLARE v1 INT DEFAULT 1; 
    DECLARE stringOut VARCHAR(200) DEFAULT ''; 
    DECLARE str VARCHAR(1) DEFAULT ''; 

    WHILE v1 <= LENGTH(stringIn) DO 
    SET str = SUBSTR(stringIn,v1,1); 
    CASE BINARY str 
     WHEN 'A' THEN SET stringOut = CONCAT(stringOut , 'N'); 
     WHEN 'a' THEN SET stringOut = CONCAT(stringOut , 'n'); 
     WHEN 'B' THEN SET stringOut = CONCAT(stringOut , 'O'); 
     WHEN 'b' THEN SET stringOut = CONCAT(stringOut , 'o'); 
     WHEN 'C' THEN SET stringOut = CONCAT(stringOut , 'P'); 
     WHEN 'c' THEN SET stringOut = CONCAT(stringOut , 'p'); 
     WHEN 'D' THEN SET stringOut = CONCAT(stringOut , 'Q'); 
     WHEN 'd' THEN SET stringOut = CONCAT(stringOut , 'q'); 
     WHEN 'E' THEN SET stringOut = CONCAT(stringOut , 'R'); 
     WHEN 'e' THEN SET stringOut = CONCAT(stringOut , 'r'); 
     WHEN 'F' THEN SET stringOut = CONCAT(stringOut , 'S'); 
     WHEN 'f' THEN SET stringOut = CONCAT(stringOut , 's'); 
     WHEN 'G' THEN SET stringOut = CONCAT(stringOut , 'T'); 
     WHEN 'g' THEN SET stringOut = CONCAT(stringOut , 't'); 
     WHEN 'H' THEN SET stringOut = CONCAT(stringOut , 'U'); 
     WHEN 'h' THEN SET stringOut = CONCAT(stringOut , 'u'); 
     WHEN 'I' THEN SET stringOut = CONCAT(stringOut , 'V'); 
     WHEN 'i' THEN SET stringOut = CONCAT(stringOut , 'v'); 
     WHEN 'J' THEN SET stringOut = CONCAT(stringOut , 'W'); 
     WHEN 'j' THEN SET stringOut = CONCAT(stringOut , 'w'); 
     WHEN 'K' THEN SET stringOut = CONCAT(stringOut , 'X'); 
     WHEN 'k' THEN SET stringOut = CONCAT(stringOut , 'x'); 
     WHEN 'L' THEN SET stringOut = CONCAT(stringOut , 'Y'); 
     WHEN 'l' THEN SET stringOut = CONCAT(stringOut , 'y'); 
     WHEN 'M' THEN SET stringOut = CONCAT(stringOut , 'Z'); 
     WHEN 'm' THEN SET stringOut = CONCAT(stringOut , 'z'); 
     WHEN 'N' THEN SET stringOut = CONCAT(stringOut , 'A'); 
     WHEN 'n' THEN SET stringOut = CONCAT(stringOut , 'a'); 
     WHEN 'O' THEN SET stringOut = CONCAT(stringOut , 'B'); 
     WHEN 'o' THEN SET stringOut = CONCAT(stringOut , 'b'); 
     WHEN 'P' THEN SET stringOut = CONCAT(stringOut , 'C'); 
     WHEN 'p' THEN SET stringOut = CONCAT(stringOut , 'c'); 
     WHEN 'Q' THEN SET stringOut = CONCAT(stringOut , 'D'); 
     WHEN 'q' THEN SET stringOut = CONCAT(stringOut , 'd'); 
     WHEN 'R' THEN SET stringOut = CONCAT(stringOut , 'E'); 
     WHEN 'r' THEN SET stringOut = CONCAT(stringOut , 'e'); 
     WHEN 'S' THEN SET stringOut = CONCAT(stringOut , 'F'); 
     WHEN 's' THEN SET stringOut = CONCAT(stringOut , 'f'); 
     WHEN 'T' THEN SET stringOut = CONCAT(stringOut , 'G'); 
     WHEN 't' THEN SET stringOut = CONCAT(stringOut , 'g'); 
     WHEN 'U' THEN SET stringOut = CONCAT(stringOut , 'H'); 
     WHEN 'u' THEN SET stringOut = CONCAT(stringOut , 'h'); 
     WHEN 'V' THEN SET stringOut = CONCAT(stringOut , 'I'); 
     WHEN 'v' THEN SET stringOut = CONCAT(stringOut , 'i'); 
     WHEN 'W' THEN SET stringOut = CONCAT(stringOut , 'J'); 
     WHEN 'w' THEN SET stringOut = CONCAT(stringOut , 'j'); 
     WHEN 'X' THEN SET stringOut = CONCAT(stringOut , 'K'); 
     WHEN 'x' THEN SET stringOut = CONCAT(stringOut , 'k'); 
     WHEN 'Y' THEN SET stringOut = CONCAT(stringOut , 'L'); 
     WHEN 'y' THEN SET stringOut = CONCAT(stringOut , 'l'); 
     WHEN 'Z' THEN SET stringOut = CONCAT(stringOut , 'M'); 
     WHEN 'z' THEN SET stringOut = CONCAT(stringOut , 'm'); 
    END CASE; 
    SET v1 = v1 + 1; 
    END WHILE; 

    RETURN stringOut; 
END;