mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-01-14 09:12:57 +00:00
54 lines
2.7 KiB
Plaintext
54 lines
2.7 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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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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SELECT * FROM system_metrics;
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+-----------------------+----------------------+----------------------------+-------------------------------+-----------------------------+----------------------------+
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| host, #Field, #String | idc, #Field, #String | cpu_util, #Field, #Float64 | memory_util, #Field, #Float64 | disk_util, #Field, #Float64 | ts, #Timestamp, #Timestamp |
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+-----------------------+----------------------+----------------------------+-------------------------------+-----------------------------+----------------------------+
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| host1 | idc_a | 11.8 | 10.3 | 10.3 | 1667446797450 |
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| host1 | idc_b | 50 | 66.7 | 40.6 | 1667446797450 |
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| host2 | idc_a | 80.1 | 70.3 | 90 | 1667446797450 |
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+-----------------------+----------------------+----------------------------+-------------------------------+-----------------------------+----------------------------+
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SELECT count(*) FROM system_metrics;
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+----------------------------------+
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| COUNT(UInt8(1)), #Field, #Uint64 |
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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), #Field, #Float64 |
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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, #Field, #String | AVG(system_metrics.memory_util), #Field, #Float64 |
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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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