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c39091e740
2 fixes: - The no-ssl telemetry tests should always run in debug tests - Run explain on a query instead of the query because this query runs out of memory in our underpowered arm tests and the bug we are looking is in the planner anyway.
49 lines
2.4 KiB
SQL
49 lines
2.4 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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-- test planning regression with many chunks
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CREATE TABLE tags(id SERIAL PRIMARY KEY, name TEXT, fleet TEXT);
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INSERT INTO tags (name, fleet) VALUES('n1', 'f1');
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CREATE TABLE readings (time timestamptz, tags_id integer, fuel_consumption DOUBLE PRECISION);
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CREATE INDEX ON readings(tags_id, "time" DESC);
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CREATE INDEX ON readings("time" DESC);
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SELECT create_hypertable('readings', 'time', partitioning_column => 'tags_id', number_partitions => 1, chunk_time_interval => 43200000000, create_default_indexes=>false);
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ALTER TABLE readings SET (timescaledb.compress, timescaledb.compress_segmentby = 'tags_id', timescaledb.compress_orderby = 'time desc');
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INSERT into readings select g, 1, 1.3 from generate_series('2001-03-01 01:01:01', '2003-02-01 01:01:01', '1 day'::interval) g;
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SELECT count(compress_chunk(chunk.schema_name|| '.' || chunk.table_name))
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FROM _timescaledb_catalog.chunk chunk
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INNER JOIN _timescaledb_catalog.hypertable hypertable ON (chunk.hypertable_id = hypertable.id)
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WHERE hypertable.table_name = 'readings' and chunk.compressed_chunk_id IS NULL;
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EXPLAIN (costs off) SELECT t.fleet as fleet, min(r.fuel_consumption) AS avg_fuel_consumption
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FROM tags t
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INNER JOIN LATERAL(SELECT tags_id, fuel_consumption FROM readings r WHERE r.tags_id = t.id ) r ON true
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GROUP BY fleet;
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-- run query with parallel enabled to ensure nothing is preventing parallel execution
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-- this is just a sanity check, the result queries dont run with parallel disabled
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SET max_parallel_workers_per_gather TO 4;
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SET parallel_setup_cost = 0;
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SET parallel_tuple_cost = 0;
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EXPLAIN (costs off) SELECT * FROM metrics ORDER BY time, device_id;
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EXPLAIN (costs off) SELECT time_bucket('10 minutes', time) bucket, avg(v0) avg_v0 FROM metrics GROUP BY bucket;
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EXPLAIN (costs off) SELECT * FROM metrics_space ORDER BY time, device_id;
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RESET parallel_setup_cost;
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RESET parallel_tuple_cost;
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SET enable_seqscan TO false;
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-- should order compressed chunks using index
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-- (we only EXPLAIN here b/c the resulting order is too inconsistent)
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EXPLAIN (costs off) SELECT * FROM metrics WHERE time > '2000-01-08' ORDER BY device_id;
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EXPLAIN (costs off) SELECT * FROM metrics_space WHERE time > '2000-01-08' ORDER BY device_id;
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SET enable_seqscan TO true;
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