Allow Functions like CAST after TIMESTAMP BY
My incoming timestamps have to be converted to ISO 8601 but only columns (and no functions) are allowed after the TIMESTAMP BY statement.
Please allow all kind of functions in order to provide a conversion. I think some guys here needed also a unix datetime converter :)
Note that, as a workaround, you can chain two streaming jobs (with Event Hubs in between) to use the first job (without TIMESTAMP BY) to convert the incoming timestamp to ISO format. Doing so can be a bit clumsy given the set of functions available today, but this is often possible.