On 12/6/23 11:44, Nathan Bossart wrote:
On Wed, Dec 06, 2023 at 10:33:49AM -0600, Nathan Bossart wrote:
        (format csv)
        Time: 12295.480 ms (00:12.295)
        Time: 12311.059 ms (00:12.311)
        Time: 12305.469 ms (00:12.305)

        (format json)
        Time: 24568.621 ms (00:24.569)
        Time: 23756.234 ms (00:23.756)
        Time: 24265.730 ms (00:24.266)

I should also note that the json output is 85% larger than the csv output.

I'll see if I can add some caching to composite_to_json(), but based on the relative data size it does not sound like there is much performance left on the table to go after, no?

--
Joe Conway
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com



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