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When classify_relation is called for relations of subqueries it would not be able to correctly classify the relation unless it was already in cache. This patch changes classify_relation to call get_hypertable without CACHE_FLAG_NOCREATE when the RangeTblEntry has the inheritance flag set.
27 lines
871 B
SQL
27 lines
871 B
SQL
-- This file and its contents are licensed under the Apache License 2.0.
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-- Please see the included NOTICE for copyright information and
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-- LICENSE-APACHE for a copy of the license.
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-- test hypertable classification when hypertable is not in cache
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-- https://github.com/timescale/timescaledb/issues/1832
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\set PREFIX 'EXPLAIN (costs off)'
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CREATE TABLE test (a int, time timestamptz NOT NULL);
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SELECT create_hypertable('public.test', 'time');
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INSERT INTO test SELECT i, current_date-10-i from generate_series(1,20) i;
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CREATE OR REPLACE FUNCTION test_f(_ts timestamptz)
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RETURNS SETOF test LANGUAGE SQL STABLE PARALLEL SAFE
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AS $f$
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SELECT DISTINCT ON (a) * FROM test WHERE time >= _ts ORDER BY a, time DESC
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$f$;
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:PREFIX SELECT * FROM test_f(now());
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-- create new session
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\c
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-- plan output should be identical to previous session
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:PREFIX SELECT * FROM test_f(now());
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