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https://github.com/timescale/timescaledb.git
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d823987fe9
When changing the column type of a column that is part of an index that is being clustered on with either postgres CLUSTER or reorder the alter type operation would fail with a segfault because it couldn't lookup the index.
109 lines
3.0 KiB
MySQL
109 lines
3.0 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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CREATE TABLE cluster_test(time timestamptz, temp float, location int);
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SELECT create_hypertable('cluster_test', 'time', chunk_time_interval => interval '1 day');
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-- Show default indexes
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SELECT * FROM test.show_indexes('cluster_test');
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-- Create two chunks
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INSERT INTO cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1),
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('2017-01-21T09:00:01', 21.3, 2);
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-- Run cluster
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CLUSTER VERBOSE cluster_test USING cluster_test_time_idx;
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-- Create a third chunk
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INSERT INTO cluster_test VALUES ('2017-01-22T09:00:01', 19.5, 3);
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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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-- Reorder just our table
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CLUSTER VERBOSE cluster_test;
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-- Show clustered indexes, including new chunk
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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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-- Reorder all tables (although will only be our test table)
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CLUSTER VERBOSE;
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-- Change the clustered index
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CREATE INDEX ON cluster_test (time, location);
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CLUSTER VERBOSE cluster_test using cluster_test_time_location_idx;
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-- Show updated 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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--check the setting of cluster indexes on hypertables and chunks
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ALTER TABLE cluster_test CLUSTER ON cluster_test_time_idx;
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SELECT indexrelid::regclass, indisclustered
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FROM pg_index
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WHERE indisclustered = true
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ORDER BY 1,2;
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CLUSTER VERBOSE cluster_test;
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ALTER TABLE cluster_test SET WITHOUT CLUSTER;
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SELECT indexrelid::regclass, indisclustered
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FROM pg_index
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WHERE indisclustered = true
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ORDER BY 1,2;
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\set ON_ERROR_STOP 0
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CLUSTER VERBOSE cluster_test;
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\set ON_ERROR_STOP 1
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ALTER TABLE _timescaledb_internal._hyper_1_1_chunk CLUSTER ON _hyper_1_1_chunk_cluster_test_time_idx;
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SELECT indexrelid::regclass, indisclustered
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FROM pg_index
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WHERE indisclustered = true
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ORDER BY 1,2;
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CLUSTER VERBOSE _timescaledb_internal._hyper_1_1_chunk;
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ALTER TABLE _timescaledb_internal._hyper_1_1_chunk SET WITHOUT CLUSTER;
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SELECT indexrelid::regclass, indisclustered
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FROM pg_index
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WHERE indisclustered = true
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ORDER BY 1,2;
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\set ON_ERROR_STOP 0
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CLUSTER VERBOSE _timescaledb_internal._hyper_1_1_chunk;
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\set ON_ERROR_STOP 1
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-- test alter column type on hypertable with clustering
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CREATE TABLE cluster_alter(time timestamp, id text, val int);
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CREATE INDEX idstuff ON cluster_alter USING btree (id ASC NULLS LAST, time);
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SELECT table_name FROM create_hypertable('cluster_alter', 'time');
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INSERT INTO cluster_alter VALUES('2020-01-01', '123', 1);
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CLUSTER cluster_alter using idstuff;
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--attempt the alter table
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ALTER TABLE cluster_alter ALTER COLUMN id TYPE int USING id::int;
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-- try recluster
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-- this fails on PG11 < 11.8 and PG12 < 12.3
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\set ON_ERROR_STOP 0
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CLUSTER cluster_alter;
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\set ON_ERROR_STOP 1
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CLUSTER cluster_alter using idstuff;
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