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https://github.com/timescale/timescaledb.git
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897fef42b6
Adds a move_chunk function which to a different tablespace. This is implemented as an extension to the reorder command. Given that the heap, toast tables, and indexes are being rewritten during the reorder operation, adding the ability to modify the tablespace is relatively simple and mostly requires adding parameters to the relevant functions for the destination tablespace (and index tablespace). The tests do not focus on further exercising the reorder infrastructure, but instead ensure that tablespace movement and permissions checks properly occur.
77 lines
3.1 KiB
SQL
77 lines
3.1 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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CREATE TABLE cluster_test(time INTEGER, temp float, location int, value TEXT);
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SELECT create_hypertable('cluster_test', 'time', chunk_time_interval => 5);
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CREATE INDEX on cluster_test (location);
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CREATE OR REPLACE FUNCTION ensure_scans_work(table_name TEXT, should_output REGCLASS=NULL, seqscan BOOLEAN=FALSE, indexscan BOOLEAN=FALSE, bitmapscan BOOLEAN=FALSE) RETURNS TABLE (a TEXT, b TEXT)
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LANGUAGE SQL STABLE AS
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$BODY$
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SELECT format($INNER$
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SET LOCAL enable_seqscan=%1$s;
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SET LOCAL enable_indexscan=%2$s;
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SET LOCAL enable_bitmapscan=%3$s;
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EXPLAIN (costs off) SELECT * FROM %4$I WHERE time=7
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$INNER$, seqscan, indexscan, bitmapscan, table_name) as a,
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format($INNER$
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WITH T1 as (SELECT * FROM %1$I WHERE time=7),
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T2 as (SELECT * FROM %2$I WHERE time=7)
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SELECT T1.time, T2.time, T1.temp, T2.temp, T1.location, T2.location,
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substring(T1.value for 30), substring(T2.value for 30),
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length(T1.value), length(T2.value)
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FROM T1 FULL OUTER JOIN T2 ON T1 = T2
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WHERE T1 IS NULL OR T2 IS NULL
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$INNER$, table_name, should_output) as b;
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$BODY$;
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CREATE OR REPLACE FUNCTION ensure_scans_work_no_val(table_name TEXT, should_output REGCLASS=NULL, seqscan BOOLEAN=FALSE, indexscan BOOLEAN=FALSE, bitmapscan BOOLEAN=FALSE) RETURNS TABLE (a TEXT, b TEXT)
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LANGUAGE SQL STABLE AS
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$BODY$
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SELECT format($INNER$
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SET LOCAL enable_seqscan=%1$s;
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SET LOCAL enable_indexscan=%2$s;
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SET LOCAL enable_bitmapscan=%3$s;
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EXPLAIN (costs off) SELECT * FROM %4$I WHERE time=6
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$INNER$, seqscan, indexscan, bitmapscan, table_name) as a,
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format($INNER$
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WITH T1 as (SELECT * FROM %1$I WHERE time=7),
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T2 as (SELECT * FROM %2$I WHERE time=7)
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SELECT T1.time, T2.time, T1.temp, T2.temp, T1.location, T2.location
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FROM T1 FULL OUTER JOIN T2 ON T1 = T2
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WHERE T1 IS NULL OR T2 IS NULL
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$INNER$, table_name, should_output) as b;
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$BODY$;
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-- Show default indexes
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SELECT * FROM test.show_indexes('cluster_test');
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-- Show clustered indexes
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SELECT indexrelid::regclass, indisclustered
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FROM pg_index
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WHERE indisclustered = true ORDER BY 1;
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-- Create two chunks
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INSERT INTO cluster_test VALUES
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( 0, 18.9, 3, 'a'),
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( 8, 13.3, 7, 'b'),
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( 3, 19.4, 3, 'c'),
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( 6, 27.3, 9, 'd'),
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( 5, 25.4, 1, 'e'),
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( 4, 18.3, 2, 'f'),
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( 2, 12.4, 8, 'g'),
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( 7, 20.3, 4, repeat('xyzzy', 100000)), -- toasted value
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( 9, 11.4, 1, 'h'),
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( 1, 23.4, 5, 'i');
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CREATE TABLE expected AS SELECT * FROM cluster_test;
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-- original results to be compared against
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SELECT ctid, time, temp, location, substring(value for 30), length(value)
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FROM _timescaledb_internal._hyper_1_1_chunk ORDER BY ctid;
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SELECT ctid, time, temp, location, substring(value for 30), length(value)
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FROM _timescaledb_internal._hyper_1_2_chunk ORDER BY ctid;
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