Re: SQL/JSON in PostgreSQL

Hi

2017-09-16 1:31 GMT+02:00 Nikita Glukhov <n(dot)gluhov(at)postgrespro(dot)ru>:

> On 15.09.2017 22:36, Oleg Bartunov wrote:
>
> On Fri, Sep 15, 2017 at 7:31 PM, Robert Haas <robertmhaas(at)gmail(dot)com>
>> wrote:
>>
>>> On Fri, Sep 15, 2017 at 10:10 AM, Daniel Gustafsson <daniel(at)yesql(dot)se>
>>> wrote:
>>>
>>>> Can we expect a rebased version of this patch for this commitfest?
>>>> Since it’s
>>>> a rather large feature it would be good to get it in as early as we can
>>>> in the
>>>> process.
>>>>
>>> Again, given that this needs a "major" rebase and hasn't been updated
>>> in a month, and given that the CF is already half over, this should
>>> just be bumped to the next CF. We're supposed to be trying to review
>>> things that were ready to go by the start of the CF, not the end.
>>>
>> We are supporting v10 branch in our github repository
>> https://github.com/postgrespro/sqljson/tree/sqljson_v10
>>
>> Since the first post we made a lot of changes, mostly because of
>> better understanding the standard and availability of technical report
>> (http://standards.iso.org/ittf/PubliclyAvailableStandards/c0
>> 67367_ISO_IEC_TR_19075-6_2017.zip).
>> Most important are:
>>
>> 1.We abandoned FORMAT support, which could confuse our users, since we
>> have data types json[b].
>>
>> 2. We use XMLTABLE infrastructure, extended for JSON_TABLE support.
>>
>> 3. Reorganize commits, so we could split one big patch by several
>> smaller patches, which could be reviewed independently.
>>
>> 4. The biggest problem is documentation, we are working on it.
>>
>> Nikita will submit patches soon.
>>
>
> Attached archive with 9 patches rebased onto latest master.
>
> 0001-jsonpath-v02.patch:
> - jsonpath type
> - jsonpath execution on jsonb type
> - jsonpath operators for jsonb type
> - GIN support for jsonpath operators
>
> 0002-jsonpath-json-v02.patch:
> - jsonb-like iterators for json type
> - jsonpath execution on json type
> - jsonpath operators for json type
>
> 0003-jsonpath-extensions-v02.patch:
> 0004-jsonpath-extensions-tests-for-json-v02.patch:
> - some useful standard extensions with tests
> 0005-sqljson-v02.patch:
> - SQL/JSON constructors (JSON_OBJECT[AGG], JSON_ARRAY[AGG])
> - SQL/JSON query functions (JSON_VALUE, JSON_QUERY, JSON_EXISTS)
> - IS JSON predicate
>
> 0006-sqljson-json-v02.patch:
> - SQL/JSON support for json type and tests
>
> 0007-json_table-v02.patch:
> - JSON_TABLE using XMLTABLE infrastructure
>
> 0008-json_table-json-v02.patch:
> - JSON_TABLE support for json type
>
> 0009-wip-extensions-v02.patch:
> - FORMAT JSONB
> - jsonb to/from bytea casts
> - jsonpath operators
> - some unfinished jsonpath extensions
>
>
> Originally, JSON path was implemented only for jsonb type, and I decided to
> add jsonb-like iterators for json type for json support implementation with
> minimal changes in JSON path code. This solution (see jsonpath_json.c from
> patch 0002) looks a little dubious to me, so I separated json support into
> independent patches.
>
> The last WIP patch 0009 is unfinished and contains a lot of FIXMEs. But
> the ability to use arbitrary Postgres operators in JSON path with
> explicitly
> specified types is rather interesting, and I think it should be shown now
> to get a some kind of pre-review.
>
> We are supporting v11 and v10 branches in our github repository:
>
> https://github.com/postgrespro/sqljson/tree/sqljson
> https://github.com/postgrespro/sqljson/tree/sqljson_wip
> https://github.com/postgrespro/sqljson/tree/sqljson_v10
> https://github.com/postgrespro/sqljson/tree/sqljson_v10_wip
>
> Attached patches can be produced simply by combining groups of consecutive
> commits from these branches.
>
>
I have some free time now. Is it last version?

Regards

Pavel

--
> Nikita Glukhov
> Postgres Professional:http://www.postgrespro.com
> The Russian Postgres Company
>
>