SELECT 
    u.User,
    u.Host,
    (SELECT 
            MAX(x.User)
        FROM
            mysql.user x
        WHERE
            x.User = u.User) i1
FROM
    (SELECT 
        User,
            Host,
            (SELECT 
                    MAX(x.User)
                FROM
                    mysql.user x
                WHERE
                    x.User = u14.User) i
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        User, Host
    FROM
        (SELECT 
        v1.User, v1.Host
    FROM
        mysql.user v1
LEFT JOIN mysql.user v2 ON LOWER(v1.User)=LOWER(v2.User)
LEFT JOIN mysql.user v3 ON LOWER(v1.User)=LOWER(v3.User)
LEFT JOIN mysql.user v4 ON LOWER(v1.User)=LOWER(v4.User)
LEFT JOIN mysql.user v5 ON LOWER(v1.User)=LOWER(v5.User)
LEFT JOIN mysql.user v6 ON LOWER(v1.User)=LOWER(v6.User)
LEFT JOIN mysql.user v7 ON LOWER(v1.User)=LOWER(v7.User)
LEFT JOIN mysql.user v8 ON LOWER(v1.User)=LOWER(v8.User)
LEFT JOIN mysql.user v9 ON LOWER(v1.User)=LOWER(v9.User)
LEFT JOIN mysql.user v10 ON LOWER(v1.User)=LOWER(v10.User)
LEFT JOIN mysql.user v11 ON LOWER(v1.User)=LOWER(v11.User)
LEFT JOIN mysql.user v12 ON LOWER(v1.User)=LOWER(v12.User)
LEFT JOIN mysql.user v13 ON LOWER(v1.User)=LOWER(v13.User)
LEFT JOIN mysql.user v14 ON LOWER(v1.User)=LOWER(v14.User)
LEFT JOIN mysql.user v15 ON LOWER(v1.User)=LOWER(v15.User)
LEFT JOIN mysql.user v16 ON LOWER(v1.User)=LOWER(v16.User)
LEFT JOIN mysql.user v17 ON LOWER(v1.User)=LOWER(v17.User)
LEFT JOIN mysql.user v18 ON LOWER(v1.User)=LOWER(v18.User)
LEFT JOIN mysql.user v19 ON LOWER(v1.User)=LOWER(v19.User)
LEFT JOIN mysql.user v20 ON LOWER(v1.User)=LOWER(v20.User)
LEFT JOIN mysql.user v21 ON LOWER(v1.User)=LOWER(v21.User)
    GROUP BY 1 , 2) u1
    GROUP BY 1 , 2) u2) u3) u4) u5) u6) u7) u8) u9) u10) u11) u12) u13) u14) u
        LEFT JOIN
    (SELECT 
        *
    FROM
        mysql.user) z1 ON z1.User = u.User
        LEFT JOIN
    mysql.user z2 ON z1.User = u.User
        LEFT JOIN
    mysql.user z3 ON z1.User = u.User
        LEFT JOIN
    mysql.user z4 ON z1.User = u.User
        LEFT JOIN
    mysql.user z5 ON z1.User = u.User
        LEFT JOIN
    mysql.user z6 ON z1.User = u.User
        LEFT JOIN
    mysql.user z7 ON z1.User = u.User
        LEFT JOIN
    mysql.user z8 ON z1.User = u.User;