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https://github.com/GreptimeTeam/greptimedb.git
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d461328238
* fix: insert distributed table if partition column has default value * Address review * address review * address review * chore: introduce assert_columns --------- Co-authored-by: WenyXu <wenymedia@gmail.com>
97 lines
2.5 KiB
Plaintext
97 lines
2.5 KiB
Plaintext
CREATE TABLE system_metrics (
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host STRING,
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idc STRING,
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cpu_util DOUBLE,
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memory_util DOUBLE,
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disk_util DOUBLE,
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ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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PRIMARY KEY(host, idc),
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TIME INDEX(ts)
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);
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Affected Rows: 0
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INSERT INTO system_metrics
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VALUES
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("host1", "idc_a", 11.8, 10.3, 10.3, 1667446797450),
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("host2", "idc_a", 80.1, 70.3, 90.0, 1667446797450),
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("host1", "idc_b", 50.0, 66.7, 40.6, 1667446797450);
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Affected Rows: 3
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SELECT * FROM system_metrics;
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+-------+-------+----------+-------------+-----------+-------------------------+
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| host | idc | cpu_util | memory_util | disk_util | ts |
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+-------+-------+----------+-------------+-----------+-------------------------+
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| host1 | idc_a | 11.8 | 10.3 | 10.3 | 2022-11-03T03:39:57.450 |
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| host1 | idc_b | 50.0 | 66.7 | 40.6 | 2022-11-03T03:39:57.450 |
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| host2 | idc_a | 80.1 | 70.3 | 90.0 | 2022-11-03T03:39:57.450 |
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+-------+-------+----------+-------------+-----------+-------------------------+
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SELECT count(*) FROM system_metrics;
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+-----------------+
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| COUNT(UInt8(1)) |
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+-----------------+
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| 3 |
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+-----------------+
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SELECT avg(cpu_util) FROM system_metrics;
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+------------------------------+
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| AVG(system_metrics.cpu_util) |
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+------------------------------+
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| 47.29999999999999 |
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+------------------------------+
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SELECT idc, avg(memory_util) FROM system_metrics GROUP BY idc ORDER BY idc;
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+-------+---------------------------------+
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| idc | AVG(system_metrics.memory_util) |
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+-------+---------------------------------+
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| idc_a | 40.3 |
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| idc_b | 66.7 |
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+-------+---------------------------------+
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DROP TABLE system_metrics;
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Affected Rows: 1
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create table foo (
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host string,
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ts timestamp DEFAULT '2023-04-29 00:00:00+00:00',
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cpu double default 0,
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TIME INDEX (ts),
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PRIMARY KEY(host)
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) engine=mito with(regions=1);
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Affected Rows: 0
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insert into foo (host, cpu, ts) values ('host1', 1.1, '2000-01-01 00:00:00+00:00');
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Affected Rows: 1
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insert into foo (host, cpu) values ('host2', 2.2);
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Affected Rows: 1
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insert into foo (host) values ('host3');
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Affected Rows: 1
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select * from foo;
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+-------+---------------------+-----+
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| host | ts | cpu |
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+-------+---------------------+-----+
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| host1 | 2000-01-01T00:00:00 | 1.1 |
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| host2 | 2023-04-29T00:00:00 | 2.2 |
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| host3 | 2023-04-29T00:00:00 | 0.0 |
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+-------+---------------------+-----+
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DROP TABLE foo;
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Affected Rows: 1
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