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Subject [GitHub] yanghua commented on issue #6432: [FLINK-9970] Add ASCII function for table/sql API
Date Thu, 26 Jul 2018 16:58:35 GMT
yanghua commented on issue #6432: [FLINK-9970] Add ASCII function for table/sql API
URL: https://github.com/apache/flink/pull/6432#issuecomment-408164654
 
 
   @twalthr Really sorry about my careless. For this PR, I just want to push as soon as possible,
because it is mid-night in China, so did not check carefully, sorry for that. Now, it has
been updated, please review it again.
   Actually, I have contributed to table module recently and implemented five functions, they
are `fromBase64`, `toBase64`, `log2(x)`, `ascii`, `chr`.
   `ascii` and `chr(char)` is a pair functions in many RDBMS to exchange ASCII code and character(string).
    The purpose is I want to enhance Flink table/sql's functions. I know there are some functions
more important, I will try to implement them in the future.

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