mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-17 11:03:36 +08:00
a218532941
Enforce index scan for queries that would produce different output between 32bit and 64bit platform to make explain output for constraint_exclusion_prepared, ordered_append and ordered_append_join test output consistent across platforms.
105 lines
2.0 KiB
SQL
105 lines
2.0 KiB
SQL
-- This file and its contents are licensed under the Timescale License.
|
|
-- Please see the included NOTICE for copyright information and
|
|
-- LICENSE-TIMESCALE for a copy of the license.
|
|
|
|
-- test prepared statements
|
|
-- executor startup exclusion with no chunks excluded
|
|
|
|
PREPARE prep AS
|
|
SELECT time
|
|
FROM :TEST_TABLE
|
|
WHERE time < now()
|
|
AND device_id = 1
|
|
ORDER BY time
|
|
LIMIT 100;
|
|
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
DEALLOCATE prep;
|
|
|
|
-- executor startup exclusion with chunks excluded
|
|
PREPARE prep AS
|
|
SELECT time
|
|
FROM :TEST_TABLE
|
|
WHERE time < '2000-01-10'::text::timestamptz
|
|
AND device_id = 1
|
|
ORDER BY time
|
|
LIMIT 100;
|
|
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
DEALLOCATE prep;
|
|
|
|
-- runtime exclusion with LATERAL and 2 hypertables
|
|
SET enable_seqscan TO false;
|
|
|
|
PREPARE prep AS
|
|
SELECT m1.time,
|
|
m2.time
|
|
FROM :TEST_TABLE m1
|
|
LEFT JOIN LATERAL (
|
|
SELECT time
|
|
FROM :TEST_TABLE m2
|
|
WHERE m1.time = m2.time
|
|
LIMIT 1) m2 ON TRUE
|
|
WHERE device_id = 2
|
|
ORDER BY m1.time
|
|
LIMIT 100;
|
|
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
DEALLOCATE prep;
|
|
|
|
RESET enable_seqscan;
|
|
|
|
-- executor startup exclusion with subquery
|
|
PREPARE prep AS
|
|
SELECT time
|
|
FROM (
|
|
SELECT time
|
|
FROM :TEST_TABLE
|
|
WHERE time < '2000-01-10'::text::timestamptz
|
|
ORDER BY time
|
|
LIMIT 100) m;
|
|
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
DEALLOCATE prep;
|
|
|
|
-- test constraint exclusion for subqueries with ConstraintAwareAppend
|
|
SET timescaledb.enable_chunk_append TO FALSE;
|
|
|
|
PREPARE prep AS
|
|
SELECT device_id,
|
|
time
|
|
FROM (
|
|
SELECT device_id,
|
|
time
|
|
FROM :TEST_TABLE
|
|
WHERE time < '2000-01-10'::text::timestamptz
|
|
ORDER BY device_id,
|
|
time
|
|
LIMIT 100) m;
|
|
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
:PREFIX EXECUTE prep;
|
|
DEALLOCATE prep;
|
|
|
|
RESET timescaledb.enable_chunk_append;
|
|
|