mirror of
https://github.com/timescale/timescaledb.git
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1c1b3c856e
Change our GUC names to use enable-prefix for all boolean GUCs similar to postgres GUC names. This patch renames disable_optimizations to enable_optimizations and constraint_aware_append to enable_constraint_aware_append and removes optimize_non_hypertables.
89 lines
3.9 KiB
PL/PgSQL
89 lines
3.9 KiB
PL/PgSQL
-- 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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SHOW timescaledb.enable_optimizations;
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--non-aggregates use MergeAppend in both optimized and non-optimized
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:PREFIX SELECT * FROM hyper_1 ORDER BY "time" DESC limit 2;
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:PREFIX SELECT * FROM hyper_timefunc ORDER BY unix_to_timestamp("time") DESC limit 2;
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--Aggregates use MergeAppend only in optimized
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:PREFIX SELECT date_trunc('minute', time) t, avg(series_0), min(series_1), avg(series_2) FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT date_trunc('minute', time) t, avg(series_0), min(series_1), avg(series_2) FROM hyper_1_date GROUP BY t ORDER BY t DESC limit 2;
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--the minute and second results should be diff
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:PREFIX SELECT date_trunc('minute', time) t, avg(series_0), min(series_1), avg(series_2) FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT date_trunc('second', time) t, avg(series_0), min(series_1), avg(series_2) FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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--test that when index on time used by constraint, still works correctly
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:PREFIX
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SELECT date_trunc('minute', time) t, avg(series_0), min(series_1), avg(series_2)
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FROM hyper_1
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WHERE time < to_timestamp(900)
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GROUP BY t
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ORDER BY t DESC
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LIMIT 2;
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--test on table with time partitioning function. Currently not
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--optimized to use index for ordering since the index is an expression
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--on time (e.g., timefunc(time)), and we currently don't handle that
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--case.
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:PREFIX
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SELECT date_trunc('minute', to_timestamp(time)) t, avg(series_0), min(series_1), avg(series_2)
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FROM hyper_timefunc
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WHERE to_timestamp(time) < to_timestamp(900)
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GROUP BY t
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ORDER BY t DESC
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LIMIT 2;
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BEGIN;
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--test that still works with an expression index on data_trunc.
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DROP INDEX "time_plain";
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CREATE INDEX "time_trunc" ON PUBLIC.hyper_1 (date_trunc('minute', time));
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ANALYZE hyper_1;
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:PREFIX SELECT date_trunc('minute', time) t, avg(series_0), min(series_1), avg(series_2) FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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--test that works with both indexes
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CREATE INDEX "time_plain" ON PUBLIC.hyper_1 (time DESC, series_0);
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ANALYZE hyper_1;
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:PREFIX SELECT date_trunc('minute', time) t, avg(series_0), min(series_1), avg(series_2) FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket('1 minute', time) t, avg(series_0), min(series_1), trunc(avg(series_2)::numeric, 5)
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FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket('1 minute', time, INTERVAL '30 seconds') t, avg(series_0), min(series_1), trunc(avg(series_2)::numeric,5)
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FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket('1 minute', time - INTERVAL '30 seconds') t, avg(series_0), min(series_1), trunc(avg(series_2)::numeric,5)
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FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket('1 minute', time - INTERVAL '30 seconds') + INTERVAL '30 seconds' t, avg(series_0), min(series_1), trunc(avg(series_2)::numeric,5)
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FROM hyper_1 GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket('1 minute', time) t, avg(series_0), min(series_1), avg(series_2)
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FROM hyper_1_tz GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket('1 minute', time::timestamp) t, avg(series_0), min(series_1), avg(series_2)
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FROM hyper_1_tz GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket(10, time) t, avg(series_0), min(series_1), avg(series_2)
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FROM hyper_1_int GROUP BY t ORDER BY t DESC limit 2;
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:PREFIX SELECT time_bucket(10, time, 2) t, avg(series_0), min(series_1), avg(series_2)
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FROM hyper_1_int GROUP BY t ORDER BY t DESC limit 2;
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ROLLBACK;
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-- sort order optimization should not be applied to non-hypertables
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:PREFIX
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SELECT date_trunc('minute', time) t, avg(series_0), min(series_1), avg(series_2)
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FROM plain_table
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WHERE time < to_timestamp(900)
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GROUP BY t
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ORDER BY t DESC
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LIMIT 2;
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