mirror of
https://github.com/timescale/timescaledb.git
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19dd7bbd7a
Previously when adding equivalence class members for the compressed chunk's variables, we would only consider Vars. This led us to ignore cases where the Var was wrapped in a RelabelType, returning inaccurate results. Fixed the issue by accepting Vars with RelabelType for segmentby equivalence class. Fixes #5585
77 lines
1.8 KiB
SQL
77 lines
1.8 KiB
SQL
-- This file and its contents are licensed under the Timescale License.
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-- Please see the included NOTICE for copyright information and
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-- LICENSE-TIMESCALE for a copy of the license.
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\c :TEST_DBNAME :ROLE_SUPERUSER
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-- github issue 5585
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create table test (
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time timestamptz not null,
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a varchar(255) not null,
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b int,
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c int
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);
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SELECT create_hypertable('test', 'time');
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insert into test values
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('2020-01-01 00:00'::timestamptz, 'lat', 1, 2),
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('2020-01-01 00:01'::timestamptz, 'lat', 1, 2),
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('2020-01-01 00:01'::timestamptz, 'lat', 2, 2),
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('2020-01-01 00:03'::timestamptz, 'lat', 1, 2),
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('2020-01-01 00:01'::timestamptz, 'lon', 1, 2);
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create table test_copy as select * from test;
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-- compress the chunk
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alter table test set (timescaledb.compress, timescaledb.compress_segmentby='a, b');
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select compress_chunk(show_chunks('test'));
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-- force an index scan
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set enable_seqscan = 'off';
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-- disable jit to avoid test flakiness
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set jit = off;
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explain with query_params as (
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select distinct a, b
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from test_copy
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where test_copy.a IN ('lat', 'lon')
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and test_copy.b IN (1)
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)
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select
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test.time,
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test.a = q.a as "this should never be false",
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test.a,
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test.b,
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test.c,
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q.*
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from
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test inner join query_params q
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on q.a = test.a and q.b = test.b
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where test.time between '2020-01-01 00:00' and '2020-01-01 00:02'
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order by test.time;
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with query_params as (
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select distinct a, b
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from test_copy
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where test_copy.a IN ('lat', 'lon')
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and test_copy.b IN (1)
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)
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select
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test.time,
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test.a = q.a as "this should never be false",
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test.a,
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test.b,
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test.c,
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q.*
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from
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test inner join query_params q
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on q.a = test.a and q.b = test.b
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where test.time between '2020-01-01 00:00' and '2020-01-01 00:02'
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order by test.time;
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reset enable_seqscan;
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reset jit;
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drop table test;
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drop table test_copy;
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