Re: Emitting JSON to file using COPY TO

From: Davin Shearer <davin(at)apache(dot)org>
To: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, Joe Conway <mail(at)joeconway(dot)com>
Subject: Re: Emitting JSON to file using COPY TO
Date: 2023-12-05 19:50:23
Message-ID: CALvfUkD8+bcNs1cYeU3wK9YsyZ7zUjs2aTxO+++Vq7zKeUE7+w@mail.gmail.com
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Hi Joe,

In reviewing the 005 patch, I think that when used with FORCE ARRAY, we
should also _imply_ FORCE ROW DELIMITER. I can't envision a use case where
someone would want to use FORCE ARRAY without also using FORCE ROW
DELIMITER. I can, however, envision a use case where someone would want
FORCE ROW DELIMITER without FORCE ARRAY, like maybe including into a larger
array. I definitely appreciate these options and the flexibility that they
afford from a user perspective.

In the test output, will you also show the different variations with FORCE
ARRAY and FORCE ROW DELIMITER => {(false, false), (true, false), (false,
true), (true, true)}? Technically you've already shown me the (false,
false) case as those are the defaults.

Thanks!

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