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https://github.com/timescale/timescaledb.git
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de2d446cb2
PG14 introduced new `ALTER TABLE` sub-commands:
* `.. ALTER COLUMN .. SET COMPRESSION`: handled it properly on
`process_utility` hook code and added related regression tests
* `.. DETACH PARTITION .. {CONCURRENTLY | FINALIZE}`: handled it
properly on `process_utility` hook code but there's no need to add
regression tests because we don't rely to native partitioning in
hypertables.
Closes #3643
55 lines
2.0 KiB
SQL
55 lines
2.0 KiB
SQL
-- 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 OR REPLACE FUNCTION show_columns_ext(rel regclass)
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RETURNS TABLE("Column" name,
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"Type" text,
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"NotNull" boolean,
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"Compression" text) LANGUAGE SQL STABLE AS
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$BODY$
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SELECT a.attname,
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format_type(t.oid, t.typtypmod),
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a.attnotnull,
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(CASE WHEN a.attcompression = 'l' THEN 'lz4' WHEN a.attcompression = 'p' THEN 'pglz' ELSE '' END)
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FROM pg_attribute a, pg_type t
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WHERE a.attrelid = rel
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AND a.atttypid = t.oid
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AND a.attnum >= 0
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ORDER BY a.attnum;
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$BODY$;
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CREATE TABLE conditions (
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time TIMESTAMP NOT NULL,
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location TEXT NOT NULL,
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temperature DOUBLE PRECISION NULL,
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humidity DOUBLE PRECISION NULL
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);
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SELECT create_hypertable('conditions', 'time', chunk_time_interval := '1 day'::interval);
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INSERT INTO conditions
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SELECT generate_series('2021-10-10 00:00'::timestamp, '2021-10-11 00:00'::timestamp, '1 day'), 'POR', 55, 75;
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CREATE VIEW t AS
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SELECT 'conditions'::regclass AS r
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UNION ALL
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SELECT * FROM show_chunks('conditions');
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SELECT * FROM t, LATERAL show_columns_ext(r) WHERE "Column" = 'location' ORDER BY 1, 2;
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ALTER TABLE conditions ALTER COLUMN location SET COMPRESSION pglz;
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SELECT * FROM t, LATERAL show_columns_ext(r) WHERE "Column" = 'location' ORDER BY 1, 2;
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INSERT INTO conditions VALUES ('2021-10-12 00:00'::timestamp, 'BRA', 66, 77);
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SELECT * FROM t, LATERAL show_columns_ext(r) WHERE "Column" = 'location' ORDER BY 1, 2;
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ALTER TABLE conditions ALTER COLUMN location SET COMPRESSION default;
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SELECT * FROM t, LATERAL show_columns_ext(r) WHERE "Column" = 'location' ORDER BY 1, 2;
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\set ON_ERROR_STOP 0
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-- failing test because compression is not allowed in "non-TOASTable" datatypes
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ALTER TABLE conditions ALTER COLUMN temperature SET COMPRESSION pglz;
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SELECT * FROM t, LATERAL show_columns_ext(r) WHERE "Column" = 'temperature' ORDER BY 1, 2;
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