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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2022/01/03 14:27:13 UTC

[GitHub] [flink] wuchong commented on pull request #18221: [FLINK-24803][table-planner] Fix cast BINARY/VARBINARY to STRING

wuchong commented on pull request #18221:
URL: https://github.com/apache/flink/pull/18221#issuecomment-1004129907


   I have the similar concern with @twalthr . IIRC, currently, the casting behavior between BYTES and STRING is using base64 encoding. I agree with that there should be more encoding methods should be supported, however, it's hard to tunning the encoding methods in the CAST syntax, and this change looks like a break change? 
   
   What do you think about introduce a new built-in function for this kind of conversion? Just like trino provides a set of conversion funtions: `from_hex`, `to_hex`, `from_big_endian_32`, `to_big_endian_32`, `from_ieee754_32, `to_ieee754_32` ... 
   
   v


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