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https://github.com/timescale/timescaledb.git
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6dad1f246a
If the joininfo for a rel is not available, the index path cannot compute the correct filters for parameterized paths as the RelOptInfo's ppilist is setup using information from the joininfo. Fixes 1558
54 lines
2.6 KiB
SQL
54 lines
2.6 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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SET work_mem TO '50MB';
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---Lets test for index backward scans instead of seq scans ------------
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-- for ordered append tests on compressed chunks we need a hypertable with time as compress_orderby column
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-- should not have ordered DecompressChunk path because segmentby columns are not part of pathkeys
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:PREFIX select * from ( SELECT * FROM metrics_ordered_idx ORDER BY time DESC LIMIT 10 ) as q order by 1,2,3,4;
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-- should have ordered DecompressChunk path because segmentby columns have equality constraints
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:PREFIX select * from (SELECT * FROM metrics_ordered_idx WHERE device_id = 3 AND device_id_peer = 3 ORDER BY time DESC LIMIT 10) as q order by 1, 2, 3, 4;
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:PREFIX SELECT DISTINCT ON (d.device_id) * FROM metrics_ordered_idx d INNER JOIN LATERAL (SELECT * FROM metrics_ordered_idx m WHERE m.device_id=d.device_id AND m.device_id_peer = 3 ORDER BY time DESC LIMIT 1 ) m ON m.device_id_peer = d.device_id_peer;
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:PREFIX SELECT d.device_id, m.time, m.time
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FROM metrics_ordered_idx d INNER JOIN LATERAL (SELECT * FROM metrics_ordered_idx m WHERE m.device_id=d.device_id AND m.device_id_peer = 3 ORDER BY time DESC LIMIT 1 ) m ON m.device_id_peer = d.device_id_peer;
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--github issue 1558
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set enable_seqscan = false;
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set enable_bitmapscan = false;
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set max_parallel_workers_per_gather = 0;
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set enable_hashjoin = false;
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set enable_mergejoin = false;
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:PREFIX select device_id, count(*) from
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(select * from metrics_ordered_idx mt, nodetime nd
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where mt.time > nd.start_time and mt.device_id = nd.node and mt.time < nd.stop_time) as subq group by device_id;
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:PREFIX select nd.node, mt.* from metrics_ordered_idx mt, nodetime nd
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where mt.time > nd.start_time and mt.device_id = nd.node and mt.time < nd.stop_time order by time;
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set enable_seqscan = true;
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set enable_bitmapscan = true;
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set enable_seqscan = true;
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set enable_bitmapscan = true;
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set max_parallel_workers_per_gather = 0;
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set enable_mergejoin = true;
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set enable_hashjoin = false;
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:PREFIX select nd.node, mt.* from metrics_ordered_idx mt, nodetime nd
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where mt.time > nd.start_time and mt.device_id = nd.node and mt.time < nd.stop_time order by time;
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set enable_mergejoin = false;
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set enable_hashjoin = true;
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:PREFIX select nd.node, mt.* from metrics_ordered_idx mt, nodetime nd
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where mt.time > nd.start_time and mt.device_id = nd.node and mt.time < nd.stop_time order by time;
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--enable all joins after the tests
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set enable_mergejoin = true;
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set enable_hashjoin = true;
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--end github issue 1558
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