Postgres 17

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select version();

version

PostgreSQL 17.2 (Debian 17.2-1.pgdg120+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 12.2.0-14) 12.2.0, 64-bit

SELECT 1

show timezone;

TimeZone

UTC

SHOW

SELECT '2015-01-01T00:00:00+00:00'::timestamptz = '2015-01-01T00:00:00'::timestamp

?column?

t

SELECT 1