MySQL Tutorial/Encryption Compression Functions/ENCODE
ENCODE(str,pass_str) (Encrypt str using pass_str as the password.)
To decrypt the result, use DECODE().
mysql>
mysql> select decode(encode("text","password"),"password");
+----------------------------------------------+
| decode(encode("text","password"),"password") |
+----------------------------------------------+
| text |
+----------------------------------------------+
1 row in set (0.00 sec)
mysql>
mysql>