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https://github.com/timescale/timescaledb.git
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70fd8df015
Add license information to files missing it and fix the license check script to honor the return code of both the apache license check and the TSL license check. Previously errors occurring during apache license check would not be reflected in the return code of the script, so only the TSL license check was effective.
37 lines
1.5 KiB
MySQL
37 lines
1.5 KiB
MySQL
-- 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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\set PREFIX 'EXPLAIN (COSTS OFF) '
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CREATE TABLE order_test(time int NOT NULL, device_id int, value float);
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CREATE INDEX ON order_test(time,device_id);
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CREATE INDEX ON order_test(device_id,time);
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SELECT create_hypertable('order_test','time',chunk_time_interval:=1000);
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INSERT INTO order_test SELECT 0,10,0.5;
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INSERT INTO order_test SELECT 1,9,0.5;
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INSERT INTO order_test SELECT 2,8,0.5;
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-- we want to see here that index scans are possible for the chosen expressions
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-- so we disable seqscan so we dont need to worry about other factors which would
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-- make PostgreSQL prefer seqscan over index scan
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SET enable_seqscan TO off;
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-- test sort optimization with single member order by
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SELECT time_bucket(10,time),device_id,value FROM order_test ORDER BY 1;
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-- should use index scan
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:PREFIX SELECT time_bucket(10,time),device_id,value FROM order_test ORDER BY 1;
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-- test sort optimization with ordering by multiple columns and time_bucket not last
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SELECT time_bucket(10,time),device_id,value FROM order_test ORDER BY 1,2;
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-- must not use index scan
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:PREFIX SELECT time_bucket(10,time),device_id,value FROM order_test ORDER BY 1,2;
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-- test sort optimization with ordering by multiple columns and time_bucket as last member
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SELECT time_bucket(10,time),device_id,value FROM order_test ORDER BY 2,1;
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-- should use index scan
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:PREFIX SELECT time_bucket(10,time),device_id,value FROM order_test ORDER BY 2,1;
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