Hi Forward, Thanks for updating the documentation. I think it is
On Mon, 2 Dec 2019 at 14:21, Forward Xu <forwardxu...@gmail.com> wrote: > Hi Jark, > Thank you very much，I will improve this document as soon as possible. > My confluence username is ForwardXu. > > Best, > Forward > > Jark Wu <imj...@gmail.com> 于2019年12月2日周一 上午11:56写道： > > > Hi Forward, > > > > Sorry for the late reply. > > As I said before, it would be better to include the JSON functions API > for > > Table API. > > For example, what the "json_exist", "json_value", "json_query", etc... > > functions in Table API looks like. > > And it would be better to follow FLIP template [1] which include "Public > > Interface" (brief list of public interface), and "Proposed changes" > > (detailed proposal). > > > > Once the design doc looks good, you can update it to FLIP and start a > vote. > > > > Btw, what's your username in confluence? > > > > > > Best, > > Jark > > > > > > [1]: https://cwiki.apache.org/confluence/display/FLINK/FLIP+Template > > > > > > On Mon, 2 Dec 2019 at 11:44, Forward Xu <forwardxu...@gmail.com> wrote: > > > > > Hi Jingsong Lee : > > > > > > Thank you very much, I need to apply for FLIP permission. Do I need to > > > create a FLIP for this? > > > > > > Best, > > > Forward > > > > > > Jingsong Li <jingsongl...@gmail.com> 于2019年12月2日周一 上午11:40写道： > > > > > > > Hi Forward: > > > > > > > > Document looks good to me. > > > > I think you can just start doing this. > > > > They all work very independently, so I don't think there's any > obvious > > > > blocking. > > > > > > > > Best, > > > > Jingsong Lee > > > > > > > > On Sat, Nov 30, 2019 at 10:59 AM Forward Xu <forwardxu...@gmail.com> > > > > wrote: > > > > > > > > > Hi everyone, It's been a long time since I started this discussion. > > Do > > > > you > > > > > have anything to add and improve? > > > > > Best, > > > > > Forward > > > > > > > > > > Forward Xu <forwardxu...@gmail.com> 于2019年9月22日周日 下午6:30写道： > > > > > > > > > > > Hi Jack, > > > > > > Thank you very much for your reply, google doc I have updated, > and > > > some > > > > > of > > > > > > your questions I replied. > > > > > > In addition, I want to apply for Flip permissions for this > > purpose. > > > > > > > > > > > > Best, > > > > > > Forward > > > > > > > > > > > > Jark Wu <imj...@gmail.com> 于2019年9月20日周五 下午9:53写道： > > > > > > > > > > > >> Hi Forward, > > > > > >> > > > > > >> Sorry for the late reply. I have went through the design doc > and I > > > > think > > > > > >> it > > > > > >> is very nice. > > > > > >> > > > > > >> Here are my thoughts and suggestions: > > > > > >> > > > > > >> 0) I think support JSON functions in SQL is not complicated. > > Because > > > > > >> Calcite already supports the parser part and the runtime part. > > > > > >> We only need to integrate it in Flink and add good coverage > > > tests. > > > > > >> 1) However, I think we should also design the corresponding JSON > > > > > Functions > > > > > >> API for Table API which is very important. > > > > > >> I don't have a clear idea about how to support all the JSON > > > > Function > > > > > >> syntax in Table API. And this may need more discussions. > > > > > >> 2) IMO, it deserves a FLIP (especially for the Table API part). > > You > > > > can > > > > > >> follow the FLIP process [1] to start a FLIP proposal. > > > > > >> 3) I think we only need to implement it in blink planner as we > are > > > > going > > > > > >> to > > > > > >> deprecate old planner. > > > > > >> So could you update the implementation section in the doc > > because > > > > the > > > > > >> implementation in blink planner should be different. > > > > > >> 4) It would be better to have an implementation plan to priority > > the > > > > > >> sub-tasks. > > > > > >> From my point of view, JSON_VALUE is the most important and > > > > > JSON_TABLE > > > > > >> gets the least priority. > > > > > >> > > > > > >> I also left some comments in the google doc. > > > > > >> > > > > > >> Hi @JingsongLee <lzljs3620...@aliyun.com> , > > > > > >> > > > > > >> I think we don't need to wait for FLIP-51. As we don't have a > > clear > > > > > >> progress of FLIP-51. > > > > > >> And as far as I know, it will add a few of PlannerExpressions > > which > > > > can > > > > > be > > > > > >> refactored easily during FLIP-51. > > > > > >> > > > > > >> > > > > > >> Cheers, > > > > > >> Jark > > > > > >> > > > > > >> [1]: > > > > > >> > > > > > >> > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/Flink+Improvement+Proposals > > > > > >> > > > > > >> > > > > > >> > > > > > >> On Thu, 5 Sep 2019 at 19:29, vino yang <yanghua1...@gmail.com> > > > wrote: > > > > > >> > > > > > >> > +1 to have JSON functions in Flink SQL > > > > > >> > > > > > > >> > JingsongLee <lzljs3620...@aliyun.com.invalid> 于2019年9月5日周四 > > > > 下午4:46写道： > > > > > >> > > > > > > >> > > +1 > > > > > >> > > Nice document. I think it is easier to do after expression > > > > > >> reworking[1]. > > > > > >> > > By the way, which planner do you want to start? > > > > > >> > > > > > > > >> > > [1] > > > > > >> > > > > > > > >> > > > > > > >> > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-51%3A+Rework+of+the+Expression+Design > > > > > >> > > > > > > > >> > > Best, > > > > > >> > > Jingsong Lee > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > ------------------------------------------------------------------ > > > > > >> > > From:TANG Wen-hui <winifred.wenhui.t...@gmail.com> > > > > > >> > > Send Time:2019年9月5日(星期四) 14:36 > > > > > >> > > To:dev <dev@flink.apache.org> > > > > > >> > > Subject:Re: Re: [DISCUSS] Support JSON functions in Flink > SQL > > > > > >> > > > > > > > >> > > +1 > > > > > >> > > I have done similar work before. > > > > > >> > > Looking forward to discussing this feature. > > > > > >> > > > > > > > >> > > Best > > > > > >> > > wenhui > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > winifred.wenhui.t...@gmail.com > > > > > >> > > > > > > > >> > > From: Kurt Young > > > > > >> > > Date: 2019-09-05 14:00 > > > > > >> > > To: dev > > > > > >> > > CC: Anyang Hu > > > > > >> > > Subject: Re: [DISCUSS] Support JSON functions in Flink SQL > > > > > >> > > +1 to add JSON support to Flink. We also see lots of > > > requirements > > > > > for > > > > > >> > JSON > > > > > >> > > related functions in our internal platform. Since these are > > > > already > > > > > >> SQL > > > > > >> > > standard, I think it's a good time to add them to Flink. > > > > > >> > > > > > > > >> > > Best, > > > > > >> > > Kurt > > > > > >> > > > > > > > >> > > > > > > > >> > > On Thu, Sep 5, 2019 at 10:37 AM Qi Luo <luoqi...@gmail.com> > > > > wrote: > > > > > >> > > > > > > > >> > > > We also see strong demands from our SQL users for > JSON/Date > > > > > related > > > > > >> > > > functions. > > > > > >> > > > > > > > > >> > > > Also +Anyang Hu <huanyang1...@gmail.com> > > > > > >> > > > > > > > > >> > > > On Wed, Sep 4, 2019 at 9:51 PM Jark Wu <imj...@gmail.com> > > > > wrote: > > > > > >> > > > > > > > > >> > > > > Hi Forward, > > > > > >> > > > > > > > > > >> > > > > Thanks for bringing this discussion and preparing the > nice > > > > > design. > > > > > >> > > > > I think it's nice to have the JSON functions in the next > > > > > release. > > > > > >> > > > > We have received some requirements for this feature. > > > > > >> > > > > > > > > > >> > > > > I can help to shepherd this JSON functions effort and > will > > > > leave > > > > > >> > > comments > > > > > >> > > > > in the design doc in the next days. > > > > > >> > > > > > > > > > >> > > > > Hi Danny, > > > > > >> > > > > > > > > > >> > > > > The new introduced JSON functions are from SQL:2016, not > > > from > > > > > >> MySQL. > > > > > >> > > > > So there no JSON type is needed. According to the > > SQL:2016, > > > > the > > > > > >> > > > > representation of JSON data can be "character string" > > which > > > is > > > > > >> also > > > > > >> > > > > the current implementation in Calcite[1]. > > > > > >> > > > > > > > > > >> > > > > Best, > > > > > >> > > > > Jark > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > [1]: > > > > > >> https://calcite.apache.org/docs/reference.html#json-functions > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > On Wed, 4 Sep 2019 at 21:22, Xu Forward < > > > > forwardxu...@gmail.com > > > > > > > > > > > >> > > wrote: > > > > > >> > > > > > > > > > >> > > > > > hi Danny Chan ,Thank you very much for your reply, > your > > > help > > > > > can > > > > > >> > help > > > > > >> > > > me > > > > > >> > > > > > further improve this discussion. > > > > > >> > > > > > Best > > > > > >> > > > > > forward > > > > > >> > > > > > > > > > > >> > > > > > Danny Chan <yuzhao....@gmail.com> 于2019年9月4日周三 > > 下午8:50写道： > > > > > >> > > > > > > > > > > >> > > > > > > Thanks Xu Forward for bring up this topic, I think > the > > > > JSON > > > > > >> > > functions > > > > > >> > > > > are > > > > > >> > > > > > > very useful especially for those MySQL users. > > > > > >> > > > > > > > > > > > >> > > > > > > I saw that you have done some work within the Apache > > > > > Calcite, > > > > > >> > > that’s > > > > > >> > > > a > > > > > >> > > > > > > good start, but this is one concern from me, Flink > > > doesn’t > > > > > >> > support > > > > > >> > > > JSON > > > > > >> > > > > > > type internal, so how to represent a JSON object in > > > Flink > > > > > >> maybe a > > > > > >> > > key > > > > > >> > > > > > point > > > > > >> > > > > > > we need to resolve. In Calcite, we use ANY type to > > > > represent > > > > > >> as > > > > > >> > the > > > > > >> > > > > JSON, > > > > > >> > > > > > > but I don’t think it is the right way to go, maybe > we > > > can > > > > > >> have a > > > > > >> > > > > > discussion > > > > > >> > > > > > > here. > > > > > >> > > > > > > > > > > > >> > > > > > > Best, > > > > > >> > > > > > > Danny Chan > > > > > >> > > > > > > 在 2019年9月4日 +0800 PM8:34，Xu Forward < > > > > forwardxu...@gmail.com > > > > > >> >，写道： > > > > > >> > > > > > > > Hi everybody, > > > > > >> > > > > > > > > > > > > >> > > > > > > > I'd like to kick off a discussion on Support JSON > > > > > functions > > > > > >> in > > > > > >> > > > Flink > > > > > >> > > > > > SQL. > > > > > >> > > > > > > > > > > > > >> > > > > > > > The entire plan is divided into two steps: > > > > > >> > > > > > > > 1. Implement Support SQL 2016-2017 JSON functions > in > > > > Flink > > > > > >> > > SQL[1]. > > > > > >> > > > > > > > 2. Implement non-Support SQL 2016-2017 JSON > > functions > > > in > > > > > >> Flink > > > > > >> > > SQL, > > > > > >> > > > > > such > > > > > >> > > > > > > as > > > > > >> > > > > > > > JSON_TYPE in Mysql, JSON_LENGTH, etc. Very useful > > JSON > > > > > >> > functions. > > > > > >> > > > > > > > > > > > > >> > > > > > > > Would love to hear your thoughts. > > > > > >> > > > > > > > > > > > > >> > > > > > > > [1] > > > > > >> > > > > > > > > > > > > >> > > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > > >> > > > > > > >> > > > > > > > > > > > > > > > https://docs.google.com/document/d/1JfaFYIFOAY8P2pFhOYNCQ9RTzwF4l85_bnTvImOLKMk/edit#heading=h.76mb88ca6yjp > > > > > >> > > > > > > > > > > > > >> > > > > > > > Best, > > > > > >> > > > > > > > ForwardXu > > > > > >> > > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > > >> > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > -- > > > > Best, Jingsong Lee > > > > > > > > > >
