Feature to ignore fields when updating a row

[mjp0]

I'm trying to get MemSQL to work with this but I'm running into problems with shard keys. If I try to update a row I'll get Error: ER_NO_SUCH_PARTITION: Feature 'Updating the Shard Key' is not supported by MemSQL Distributed.. This is happening because juggling compiles UPDATE SQL from all values in the model and it seems that I can't delete values from the model object.

Would it be possible to create some sort of boolean flag in the schema that would make juggling to ignore that field when updating?