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From: David G. Johnston <[email protected]>
To: Joe Conway <[email protected]>
Cc: Sehrope Sarkuni <[email protected]>
Cc: Andrew Dunstan <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Davin Shearer <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: Emitting JSON to file using COPY TO
Date: Wed, 6 Dec 2023 15:56:22 -0700
Message-ID: <CAKFQuwaw+n=FBLUXs-jPQbcrvN9Bmgu6eTM-q+GpnHpKBDUsJg@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
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On Wed, Dec 6, 2023 at 3:38 PM Joe Conway <[email protected]> wrote:

> So the questions are:
> 1. Do those two formats work for the initial implementation?
>

Yes.  We provide a stream-oriented format and one atomic-import format.

2. Is the default correct or should it be switched
>     e.g. rather than specifying FORCE_ARRAY to get an
>     array, something like FORCE_NO_ARRAY to get JSON lines
>     and the JSON array is default?
>
>
No default?

Require explicit of a sub-format when the main format is JSON.

JSON_OBJECT_ROWS
JSON_ARRAY_OF_OBJECTS

For a future compact array-structured-composites sub-format:
JSON_ARRAY_OF_ARRAYS
JSON_ARRAY_ROWS

David J.

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