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4f72ab0377
decompress_chunk_plan_create used get_actual_clauses to extract RestrictInfo clauses and adds them as quals. This function is only supposed to be used when none of the RestrictInfos are pseudoconstant leading to an assertion failure when the query has pseudoconstant quals. Fixes #3241
101 lines
3.6 KiB
PL/PgSQL
101 lines
3.6 KiB
PL/PgSQL
-- 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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--TEST github issue 1650 character segment by column
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CREATE TABLE test_chartab ( job_run_id INTEGER NOT NULL, mac_id CHAR(16) NOT NULL, rtt INTEGER NOT NULL, ts TIMESTAMP(3) NOT NULL );
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SELECT create_hypertable('test_chartab', 'ts', chunk_time_interval => interval '1 day', migrate_data => true);
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insert into test_chartab
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values(8864, '0014070000006190' , 392 , '2019-12-14 02:52:05.863');
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insert into test_chartab
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values( 8864 , '0014070000011039' , 150 , '2019-12-14 02:52:05.863');
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insert into test_chartab
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values( 8864 , '001407000001DD2E' , 228 , '2019-12-14 02:52:05.863');
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insert into test_chartab
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values( 8890 , '001407000001DD2E' , 228 , '2019-12-20 02:52:05.863');
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ALTER TABLE test_chartab SET (timescaledb.compress, timescaledb.compress_segmentby = 'mac_id', timescaledb.compress_orderby = 'ts DESC');
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select * from test_chartab order by mac_id , ts limit 2;
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--compress the data and check --
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SELECT compress_chunk('_timescaledb_internal._hyper_1_1_chunk');
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select * from test_chartab order by mac_id , ts limit 2;
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SELECT compress_chunk('_timescaledb_internal._hyper_1_2_chunk');
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select * from test_chartab order by mac_id , ts limit 2;
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-- test constraintawareappend sort node handling
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SET enable_hashagg TO false;
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CREATE TABLE public.merge_sort (time timestamp NOT NULL, measure_id integer NOT NULL, device_id integer NOT NULL, value float);
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SELECT create_hypertable('merge_sort', 'time');
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ALTER TABLE merge_sort SET (timescaledb.compress = true, timescaledb.compress_orderby = 'time', timescaledb.compress_segmentby = 'device_id, measure_id');
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INSERT INTO merge_sort SELECT time, 1, 1, extract(epoch from time) * 0.001 FROM generate_series('2000-01-01'::timestamp,'2000-02-01'::timestamp,'1h'::interval) g1(time);
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ANALYZE merge_sort;
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--compress first chunk
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SELECT
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compress_chunk(c.schema_name || '.' || c.table_name)
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FROM _timescaledb_catalog.chunk c
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INNER JOIN _timescaledb_catalog.hypertable ht ON c.hypertable_id=ht.id
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WHERE ht.table_name = 'merge_sort'
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ORDER BY c.id LIMIT 1;
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-- this should have a MergeAppend with children wrapped in Sort nodes
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EXPLAIN (analyze,costs off,timing off,summary off) SELECT
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last(time, time) as time,
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device_id,
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measure_id,
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last(value, time) AS value
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FROM merge_sort
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WHERE time < now()
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GROUP BY 2, 3;
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-- this should exclude the decompressed chunk
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EXPLAIN (analyze,costs off,timing off,summary off) SELECT
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last(time, time) as time,
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device_id,
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measure_id,
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last(value, time) AS value
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FROM merge_sort
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WHERE time > '2000-01-10'::text::timestamp
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GROUP BY 2, 3;
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RESET enable_hashagg;
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-- test if volatile function quals are applied to compressed chunks
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CREATE FUNCTION check_equal_228( intval INTEGER) RETURNS BOOL
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LANGUAGE PLPGSQL AS
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$BODY$
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DECLARE
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retval BOOL;
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BEGIN
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IF intval = 228 THEN RETURN TRUE;
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ELSE RETURN FALSE;
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END IF;
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END;
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$BODY$;
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-- the function cannot be pushed down to compressed chunk
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-- but should be applied as a filter on decompresschunk
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SELECT * from test_chartab
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WHERE check_equal_228(rtt) ORDER BY ts;
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EXPLAIN (analyze,costs off,timing off,summary off)
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SELECT * from test_chartab
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WHERE check_equal_228(rtt) and ts < '2019-12-15 00:00:00' order by ts;
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-- test pseudoconstant qual #3241
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CREATE TABLE pseudo(time timestamptz NOT NULL);
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SELECT create_hypertable('pseudo','time');
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ALTER TABLE pseudo SET (timescaledb.compress);
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INSERT INTO pseudo SELECT '2000-01-01';
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SELECT compress_chunk(show_chunks('pseudo'));
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SELECT * FROM pseudo WHERE now() IS NOT NULL;
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