Select properties on query of multiple objects

Unfortunately this is not yet possible.  I've created this as an improvement request with ID 170195.

Thanks Craig, where can I track the improvement request?

If an item is implemented then the tracker ID will be noted in the release notes: M-Files Online Release Notes - M-Files.  Note that this is not something that is undergoing active development right now, but will be considered as we look at how we improve the API in the future.

One thing I would highlight is that you mention "data to be transferred".  If It is being transferred across the wire to/from another system then consider whether you could expose a vault extension method to collate the data together and return only what you need; it's still being dragged from the vault, but you could reduce the data that's being transferred.

If an item is implemented then the tracker ID will be noted in the release notes: M-Files Online Release Notes - M-Files.  Note that this is not something that is undergoing active development right now, but will be considered as we look at how we improve the API in the future.

One thing I would highlight is that you mention "data to be transferred".  If It is being transferred across the wire to/from another system then consider whether you could expose a vault extension method to collate the data together and return only what you need; it's still being dragged from the vault, but you could reduce the data that's being transferred.