Hi All,

Initiating a discussion to propose adding transform function.

Feature: Adding transform function.
Details: SQL++ UDFs are very powerful, in that they can return anything. In 
certain circumstances this is not desirable. For example, with feeds we can 
today apply a function on every record incoming to the dataset. A function that 
produces an entire dataset's worth of data for 1 input value would not be 
feasible to run in that fashion. Hence, restricting the function so that it may 
only take an input, and do some transform on it, is desirable for performance 
reasons.
APE: 
https://cwiki.apache.org/confluence/display/ASTERIXDB/APE+21%3A+Transform+Function

Thanks,
Peeyush

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