Adding MySQL functions when saving data

Is it possible to apply MySQL functions when saving data to a database?
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For example, in my Save Data function I have added a data override for "comments" with the value: AES_ENCRYPT('{data:comments}', 'mykey')
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But when I look at the debug info, this is what it the query ends up looking like:

INSERT INTO `mytable` (`id`, `comments`)  values  ('', 'AES_ENCRYPT('test comment', 'mykey')');

I could just write it with custom code, but that's what I've been doing with v5 so I was hoping v6 would have a better way.
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I appreciate any advice!

Well, I ended up just writing the query manually in a PHP function, but if anyone figures out how to do this type of thing without having to write custom code, let me know please!