Hi All, I found flink is lack of some basic functions , for example string split, regular express support, json parse and extract support, these function are used frequently in development , but they are not supported, use has to write UDF to support this. And some of the provided functions are lack of usability, for example log(2, 1.0) and exp(1.0) with double params are not supported. I think they are not hard to implement and they are very basic functions. Will flink enhance the basic functions , maybe in later releases?
Best, Henry