[GitHub] flink pull request #6337: [FLINK-9853][Tabel API & SQL] add HEX support

[yanghua]

Github user yanghua commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6337#discussion_r202573057
  
    --- Diff: 
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/functions/ScalarFunctions.scala
 ---
    @@ -182,4 +184,6 @@ object ScalarFunctions {
     
         new String(data)
       }
    +
    +  def hex(x: String): String = Hex.encodeHexString(x.getBytes)
    --- End diff --
    
    add the doc for the API looks better to me


---