From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
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To: | Joe Conway <mail(at)joeconway(dot)com>, Davin Shearer <davin(at)apache(dot)org>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Emitting JSON to file using COPY TO |
Date: | 2023-12-06 12:36:36 |
Message-ID: | 2e7ff718-895d-83fc-46f7-be25e23b23b4@dunslane.net |
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Lists: | pgsql-general pgsql-hackers |
On 2023-12-05 Tu 16:46, Joe Conway wrote:
> On 12/5/23 16:20, Andrew Dunstan wrote:
>> On 2023-12-05 Tu 16:09, Joe Conway wrote:
>>> On 12/5/23 16:02, Joe Conway wrote:
>>>> On 12/5/23 15:55, Andrew Dunstan wrote:
>>>>> and in any other case (e.g. LINES) I can't see why you
>>>>> would have them.
>>>
>>> Oh I didn't address this -- I saw examples in the interwebs of MSSQL
>>> server I think [1] which had the non-array with commas import and
>>> export style. It was not that tough to support and the code as
>>> written already does it, so why not?
>>
>> That seems quite absurd, TBH. I know we've catered for some absurdity in
>> the CSV code (much of it down to me), so maybe we need to be liberal in
>> what we accept here too. IMNSHO, we should produce either a single JSON
>> document (the ARRAY case) or a series of JSON documents, one per row
>> (the LINES case).
>
>
> So your preference would be to not allow the non-array-with-commas
> case but if/when we implement COPY FROM we would accept that format?
> As in Postel'a law ("be conservative in what you do, be liberal in
> what you accept from others")?
Yes, I think so.
cheers
andrew
--
Andrew Dunstan
EDB: https://www.enterprisedb.com
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