Re: Emitting JSON to file using COPY TO

jian he <jian.universality@gmail.com>

From: jian he <jian.universality@gmail.com>

To: Joe Conway <mail@joeconway.com>

Cc: "Andrey M. Borodin" <x4mmm@yandex-team.ru>, Dean Rasheed <dean.a.rasheed@gmail.com>, Daniel Verite <daniel@manitou-mail.org>, Andrew Dunstan <andrew@dunslane.net>, Davin Shearer <davin@apache.org>, PostgreSQL-development <pgsql-hackers@postgresql.org>

Date: 2024-11-19T06:16:52Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Add option force_array for COPY JSON FORMAT
- 4c0390ac53b7 19 (unreleased) landed
json format for COPY TO
- 7dadd38cda95 19 (unreleased) landed
introduce CopyFormat, refactor CopyFormatOptions
- a2145605ee3d 19 (unreleased) landed
Doc: add IDs to copy.sgml's <varlistentry> and <refsect1>
- e4018f891dec 19 (unreleased) cited

Attachments

v13-0002-introduce-json-format-for-COPY-TO.patch (text/x-patch) patch v13-0002
v13-0003-Add-option-force_array-for-COPY-JSON-FORMAT.patch (text/x-patch) patch v13-0003
v13-0001-Introduce-CopyFormat-and-replace-csv_mode-and-bi.patch (text/x-patch) patch v13-0001

hi. there.

new patch attached.
v13-00001 is from
https://postgr.es/m/fbc63db8-94de-45f6-b327-50456630264d@app.fastmail.com
just refactoring copy format.
The author is Joel Jacobson!

v13-0002, v13-0003 almost the same as previously v12.
some minor change compared to v12:
* refactor code, based on v13-0001. instead of a bool in
CopyFormatOptions-> json_mode

now we use
typedef enum CopyFormat
{
    COPY_FORMAT_TEXT = 0,
    COPY_FORMAT_BINARY,
    COPY_FORMAT_CSV,
    COPY_FORMAT_JSON,
} CopyFormat;
to represent the format of the COPY operation.

* make JSON format cannot be used with {default, null, delimiter}
options. and add related tests, documentation.

* add tab_complete