Hi everyone,
thanks for the comments in the doc. The feedback so far was very
positive. I will convert the doc into a FLIP wiki page now.
If there are no further concerns, I would like to start a voting process
soon.
Thanks,
Timo
On 09.10.19 04:58, Jingsong Li wrote:
Thanks Timo for your pretty nice proposal, big +1 to the FLIP. Left some
minor comments.
A minor concern about flink-planner, precision things maybe cannot be
supported.
Best,
Jingsong Lee
On Tue, Oct 8, 2019 at 5:58 PM zha...@lenovocloud.com <
zha...@lenovocloud.com> wrote:
unsubscribe
zha...@lenovocloud.com
From: Jark Wu
Date: 2019-10-08 17:29
To: dev
Subject: Re: [DISCUSS] FLIP-65: New type inference for Table API UDFs
Hi Timo,
Thanks for the proposal, a big +1 to the FLIP, especially this enables the
unified `TableEnvironment.registerFunction()`.
I think the design documentation is pretty good enough, I only left some
minor comments there.
Best,
Jark
On Fri, 4 Oct 2019 at 23:54, Timo Walther <twal...@apache.org> wrote:
Hi everyone,
I would like to propose FLIP-65 that describes how we want to deal with
data types and their inference/extraction in the Table API in the
future. I have collected many comments, shortcomings, issues from users
and trainings in last years that went into the design. It completes the
work started in FLIP-37 by upgrading the type system to DataTypes and
allowing new use cases. Some key features of this FLIP are:
- Type extraction closely coupled to the SQL standard (with
precision/scale specification and complex data types)
- Simple stuff is simple, missing information can be provided with
annotations without the need to specify everything from scratch.
- Full access to the planner's type inference which allows to create
UDFs as powerful as built-in system functions
- Unification of Scala and Java API to enable the unified
TableEnvironment.registerFunction()
The design document can be found here:
https://docs.google.com/document/d/1Zf8-okGvCiTTRaTN0IqtTGrrjXYNGFJnhUQyinF4xcU/edit#
I will convert it to a wiki page after the first review comments.
Happy to hear your thoughts.
Thanks,
Timo
[1]
https://cwiki.apache.org/confluence/display/FLINK/FLIP-37%3A+Rework+of+the+Table+API+Type+System
