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44941f7bd2
Add support for compress_chunks function. This also adds support for compress_orderby and compress_segmentby parameters in ALTER TABLE. These parameteres are used by the compress_chunks function. The parsing code will most likely be changed to use PG raw_parser function.
32 lines
1.3 KiB
SQL
32 lines
1.3 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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--TEST1 ---
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--basic test with count
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create table foo (a integer, b integer, c integer, d integer);
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select table_name from create_hypertable('foo', 'a', chunk_time_interval=> 10);
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insert into foo values( 3 , 16 , 20, 11);
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insert into foo values( 10 , 10 , 20, 120);
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insert into foo values( 20 , 11 , 20, 13);
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insert into foo values( 30 , 12 , 20, 14);
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alter table foo set (timescaledb.compress, timescaledb.compress_segmentby = 'a,b', timescaledb.compress_orderby = 'c desc, d asc nulls last');
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select id, schema_name, table_name, compressed, compressed_hypertable_id from
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_timescaledb_catalog.hypertable order by id;
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select * from _timescaledb_catalog.hypertable_compression order by hypertable_id, attname;
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select compress_chunk( '_timescaledb_internal._hyper_1_2_chunk');
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select compress_chunk( '_timescaledb_internal._hyper_1_1_chunk');
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select ch1.id, ch1.schema_name, ch1.table_name , ch2.table_name as compress_table
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from
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_timescaledb_catalog.chunk ch1, _timescaledb_catalog.chunk ch2
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where ch1.compressed_chunk_id = ch2.id;
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\set ON_ERROR_STOP 0
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--cannot recompress the chunk the second time around
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select compress_chunk( '_timescaledb_internal._hyper_1_2_chunk');
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