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e7f70e354e
When calling show_chunks or drop_chunks without specifying a particular hypertable TimescaleDB iterates through all existing hypertables and builds a list. While doing this it adds the internal '_compressed_hypertable_*' tables which leads to incorrect behaviour of ts_chunk_get_chunks_in_time_range function. This fix filters out the internal compressed tables while scanning at ts_hypertable_get_all function.
43 lines
2.5 KiB
SQL
43 lines
2.5 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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--------------------------------------------------------------------------
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-- show_chunks and drop_chunks functions on a compressed table
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-- (issue https://github.com/timescale/timescaledb/issues/1535)
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-- create a table that will not be compressed
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CREATE TABLE public.uncompressed_table(time date NOT NULL, temp float8, device_id text);
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CREATE INDEX ON public.uncompressed_table(time DESC);
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SELECT create_hypertable('public.uncompressed_table', 'time', chunk_time_interval => interval '1 day');
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INSERT INTO public.uncompressed_table VALUES('2020-03-01', 1.0, 'dev1');
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INSERT INTO public.uncompressed_table VALUES('2020-03-05', 2.0, 'dev1');
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INSERT INTO public.uncompressed_table VALUES('2020-03-07', 3.0, 'dev1');
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INSERT INTO public.uncompressed_table VALUES('2020-03-08', 4.0, 'dev7');
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INSERT INTO public.uncompressed_table VALUES('2020-03-09', 5.0, 'dev7');
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INSERT INTO public.uncompressed_table VALUES('2020-03-10', 6.0, 'dev7');
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-- create next table that is going to be compressed:
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CREATE TABLE public.table_to_compress (time date NOT NULL, acq_id bigint, value bigint);
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CREATE INDEX idx_table_to_compress_acq_id ON public.table_to_compress(acq_id);
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SELECT create_hypertable('public.table_to_compress', 'time', chunk_time_interval => interval '1 day');
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ALTER TABLE public.table_to_compress SET (timescaledb.compress, timescaledb.compress_segmentby = 'acq_id');
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INSERT INTO public.table_to_compress VALUES ('2020-01-01', 1234567, 777888);
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INSERT INTO public.table_to_compress VALUES ('2020-02-01', 567567, 890890);
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INSERT INTO public.table_to_compress VALUES ('2020-02-10', 1234, 5678);
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SELECT show_chunks('public.table_to_compress');
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SELECT show_chunks(hypertable=>'public.table_to_compress', older_than=>'1 day'::interval);
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SELECT show_chunks(hypertable=>'public.table_to_compress', newer_than=>'1 day'::interval);
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SELECT show_chunks(); -- across all hypertables
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-- compress all chunks of the table:
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SELECT compress_chunk(show_chunks(hypertable=>'public.table_to_compress'));
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-- and run the queries again to make sure results are the same
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SELECT show_chunks('public.table_to_compress');
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SELECT show_chunks(hypertable=>'public.table_to_compress', older_than=>'1 day'::interval);
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SELECT show_chunks(hypertable=>'public.table_to_compress', newer_than=>'1 day'::interval);
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SELECT show_chunks();
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-- drop all hypertables' old chunks
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SELECT drop_chunks(older_than=>'1 day'::interval);
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SELECT show_chunks();
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