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From shaoxuan-wang <...@git.apache.org>
Subject [GitHub] flink issue #3579: [FLINK-6124] [Table API & SQL] support max/min aggregatio...
Date Wed, 22 Mar 2017 02:01:11 GMT
Github user shaoxuan-wang commented on the issue:

    @twalthr, I saw you have removed the CHAR type when you merge this. Just want to clarify.
In FLINK-3916, in method typeInfoToSqlTypeName, you have added 
            throw TableException("Character type is not supported.")
    TableAPI is open for user to pass CHAR type data, 
    val data = List(                                    
      (1L, 1, 1d, 1f, new BigDecimal("1"), 'a', "Hi")
    .toTable(tEnv, 'long, 'int, 'double, 'float, 'bigdec, 'string) 
    I am curious the reason why we do not support CHAR type explicitly.
    Also, as I suggested early, we'd better to have all build-in aggregates to support the
retraction method. We should add string type for Max/MinWithRetractAggFunction. What do you

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