-- This file and its contents are licensed under the Apache License 2.0.
-- Please see the included NOTICE for copyright information and
-- LICENSE-APACHE for a copy of the license.

-- test hypertable classification when hypertable is not in cache
-- https://github.com/timescale/timescaledb/issues/1832

\set PREFIX 'EXPLAIN (costs off)'

CREATE TABLE test (a int, time timestamptz NOT NULL);
SELECT create_hypertable('public.test', 'time');
INSERT INTO test SELECT i, '2020-04-01'::date-10-i from generate_series(1,20) i;

CREATE OR REPLACE FUNCTION test_f(_ts timestamptz)
RETURNS SETOF test LANGUAGE SQL STABLE PARALLEL SAFE
AS $f$
   SELECT DISTINCT ON (a) * FROM test WHERE time >= _ts ORDER BY a, time DESC
$f$;

:PREFIX SELECT * FROM test_f(now());

-- create new session
\c

-- plan output should be identical to previous session
:PREFIX SELECT * FROM test_f(now());