mirror of
https://github.com/timescale/timescaledb.git
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131 lines
10 KiB
Plaintext
131 lines
10 KiB
Plaintext
\ir include/create_single_db.sql
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SET client_min_messages = WARNING;
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DROP DATABASE IF EXISTS single;
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SET client_min_messages = NOTICE;
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CREATE DATABASE single;
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\c single
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CREATE EXTENSION IF NOT EXISTS timescaledb;
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CREATE TABLE chunk_test(
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time BIGINT,
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metric INTEGER,
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device_id TEXT
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);
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-- Test chunk closing/creation
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SELECT * FROM create_hypertable('chunk_test', 'time', 'device_id', 2, chunk_time_interval => 10);
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create_hypertable
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-------------------
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(1 row)
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SELECT * FROM _timescaledb_catalog.hypertable;
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id | schema_name | table_name | associated_schema_name | associated_table_prefix | time_column_name | time_column_type | chunk_time_interval
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----+-------------+------------+------------------------+-------------------------+------------------+------------------+---------------------
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1 | public | chunk_test | _timescaledb_internal | _hyper_1 | time | bigint | 10
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(1 row)
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INSERT INTO chunk_test VALUES (1, 1, 'dev1'),
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(2, 2, 'dev2'),
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(45, 2, 'dev2'),
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(46, 2, 'dev2');
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SELECT * FROM set_chunk_time_interval('chunk_test', 40::bigint);
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set_chunk_time_interval
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-------------------------
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(1 row)
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INSERT INTO chunk_test VALUES(23, 3, 'dev3');
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SELECT * FROM chunk_test order by time, metric, device_id;
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time | metric | device_id
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------+--------+-----------
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1 | 1 | dev1
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2 | 2 | dev2
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23 | 3 | dev3
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45 | 2 | dev2
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46 | 2 | dev2
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(5 rows)
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SELECT * FROM _timescaledb_catalog.chunk;
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id | partition_id | start_time | end_time | schema_name | table_name
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----+--------------+------------+----------+-----------------------+------------------
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1 | 1 | 0 | 9 | _timescaledb_internal | _hyper_1_1_chunk
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2 | 2 | 0 | 9 | _timescaledb_internal | _hyper_1_2_chunk
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3 | 2 | 40 | 49 | _timescaledb_internal | _hyper_1_3_chunk
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4 | 1 | 10 | 39 | _timescaledb_internal | _hyper_1_4_chunk
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(4 rows)
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SELECT * FROM _timescaledb_catalog.hypertable;
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id | schema_name | table_name | associated_schema_name | associated_table_prefix | time_column_name | time_column_type | chunk_time_interval
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----+-------------+------------+------------------------+-------------------------+------------------+------------------+---------------------
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1 | public | chunk_test | _timescaledb_internal | _hyper_1 | time | bigint | 40
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(1 row)
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SELECT * FROM ONLY chunk_test;
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time | metric | device_id
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------+--------+-----------
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(0 rows)
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SELECT * FROM _timescaledb_catalog.chunk c
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LEFT JOIN _timescaledb_catalog.partition p ON (p.id = c.partition_id)
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LEFT JOIN _timescaledb_catalog.partition_epoch pe ON (pe.id = p.epoch_id)
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LEFT JOIN _timescaledb_catalog.hypertable h ON (pe.hypertable_id = h.id)
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WHERE h.schema_name = 'public' AND h.table_name = 'chunk_test'
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ORDER BY c.id;
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id | partition_id | start_time | end_time | schema_name | table_name | id | epoch_id | keyspace_start | keyspace_end | tablespace | id | hypertable_id | start_time | end_time | num_partitions | partitioning_func_schema | partitioning_func | partitioning_mod | partitioning_column | id | schema_name | table_name | associated_schema_name | associated_table_prefix | time_column_name | time_column_type | chunk_time_interval
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----+--------------+------------+----------+-----------------------+------------------+----+----------+----------------+--------------+------------+----+---------------+------------+----------+----------------+--------------------------+-----------------------+------------------+---------------------+----+-------------+------------+------------------------+-------------------------+------------------+------------------+---------------------
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1 | 1 | 0 | 9 | _timescaledb_internal | _hyper_1_1_chunk | 1 | 1 | 0 | 16383 | | 1 | 1 | | | 2 | _timescaledb_internal | get_partition_for_key | 32768 | device_id | 1 | public | chunk_test | _timescaledb_internal | _hyper_1 | time | bigint | 40
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2 | 2 | 0 | 9 | _timescaledb_internal | _hyper_1_2_chunk | 2 | 1 | 16384 | 32767 | | 1 | 1 | | | 2 | _timescaledb_internal | get_partition_for_key | 32768 | device_id | 1 | public | chunk_test | _timescaledb_internal | _hyper_1 | time | bigint | 40
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3 | 2 | 40 | 49 | _timescaledb_internal | _hyper_1_3_chunk | 2 | 1 | 16384 | 32767 | | 1 | 1 | | | 2 | _timescaledb_internal | get_partition_for_key | 32768 | device_id | 1 | public | chunk_test | _timescaledb_internal | _hyper_1 | time | bigint | 40
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4 | 1 | 10 | 39 | _timescaledb_internal | _hyper_1_4_chunk | 1 | 1 | 0 | 16383 | | 1 | 1 | | | 2 | _timescaledb_internal | get_partition_for_key | 32768 | device_id | 1 | public | chunk_test | _timescaledb_internal | _hyper_1 | time | bigint | 40
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(4 rows)
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-- Test chunk aligning between partitions
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CREATE TABLE chunk_align_test(
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time BIGINT,
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metric INTEGER,
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device_id TEXT
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);
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SELECT * FROM create_hypertable('chunk_align_test', 'time', 'device_id', 2, chunk_time_interval => 10);
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create_hypertable
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-------------------
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(1 row)
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INSERT INTO chunk_align_test VALUES (1, 1, 'dev1'); -- this should create a 10 wide chunk
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SELECT * FROM _timescaledb_catalog.chunk c
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LEFT JOIN _timescaledb_catalog.chunk_constraint cc ON (c.id = cc.chunk_id)
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LEFT JOIN _timescaledb_catalog.dimension_slice ds ON (ds.id = cc.dimension_slice_id)
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LEFT JOIN _timescaledb_catalog.dimension d ON (d.id = ds.dimension_id)
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LEFT JOIN _timescaledb_catalog.hypertable h ON (d.hypertable_id = h.id)
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WHERE h.schema_name = 'public' AND h.table_name = 'chunk_align_test'
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AND d.column_name = 'time'
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ORDER BY c.id, d.id;
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id | hypertable_id | schema_name | table_name | chunk_id | dimension_slice_id | id | dimension_id | range_start | range_end | id | hypertable_id | column_name | column_type | aligned | num_slices | partitioning_func_schema | partitioning_func | interval_length | id | schema_name | table_name | associated_schema_name | associated_table_prefix | num_dimensions
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----+---------------+-----------------------+------------------+----------+--------------------+----+--------------+-------------+-----------+----+---------------+-------------+-------------+---------+------------+--------------------------+-------------------+-----------------+----+-------------+------------------+------------------------+-------------------------+----------------
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5 | 2 | _timescaledb_internal | _hyper_2_5_chunk | 5 | 9 | 9 | 3 | 0 | 10 | 3 | 2 | time | bigint | t | | | | 10 | 2 | public | chunk_align_test | _timescaledb_internal | _hyper_2 | 2
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(1 row)
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SELECT * FROM set_chunk_time_interval('chunk_align_test', 40::bigint);
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set_chunk_time_interval
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-------------------------
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(1 row)
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INSERT INTO chunk_align_test VALUES (5, 1, 'dev2'); -- this should still create a 10 wide chunk
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INSERT INTO chunk_align_test VALUES (45, 1, 'dev2'); -- this should create a 40 wide chunk
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SELECT * FROM _timescaledb_catalog.chunk c
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LEFT JOIN _timescaledb_catalog.chunk_constraint cc ON (c.id = cc.chunk_id)
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LEFT JOIN _timescaledb_catalog.dimension_slice ds ON (ds.id = cc.dimension_slice_id)
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LEFT JOIN _timescaledb_catalog.dimension d ON (d.id = ds.dimension_id)
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LEFT JOIN _timescaledb_catalog.hypertable h ON (d.hypertable_id = h.id)
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WHERE h.schema_name = 'public' AND h.table_name = 'chunk_align_test'
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AND d.column_name = 'time'
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ORDER BY c.id, d.id;
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id | hypertable_id | schema_name | table_name | chunk_id | dimension_slice_id | id | dimension_id | range_start | range_end | id | hypertable_id | column_name | column_type | aligned | num_slices | partitioning_func_schema | partitioning_func | interval_length | id | schema_name | table_name | associated_schema_name | associated_table_prefix | num_dimensions
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----+---------------+-----------------------+------------------+----------+--------------------+----+--------------+-------------+-----------+----+---------------+-------------+-------------+---------+------------+--------------------------+-------------------+-----------------+----+-------------+------------------+------------------------+-------------------------+----------------
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5 | 2 | _timescaledb_internal | _hyper_2_5_chunk | 5 | 9 | 9 | 3 | 0 | 10 | 3 | 2 | time | bigint | t | | | | 40 | 2 | public | chunk_align_test | _timescaledb_internal | _hyper_2 | 2
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6 | 2 | _timescaledb_internal | _hyper_2_6_chunk | 6 | 9 | 9 | 3 | 0 | 10 | 3 | 2 | time | bigint | t | | | | 40 | 2 | public | chunk_align_test | _timescaledb_internal | _hyper_2 | 2
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7 | 2 | _timescaledb_internal | _hyper_2_7_chunk | 7 | 13 | 13 | 3 | 40 | 80 | 3 | 2 | time | bigint | t | | | | 40 | 2 | public | chunk_align_test | _timescaledb_internal | _hyper_2 | 2
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(3 rows)
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