mirror of
https://github.com/GreptimeTeam/greptimedb.git
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e2a1cb5840
* feat: support evaluate expr in range query param * chore: fix comment * chore: fix code comment * fix: disbale now in duration param
55 lines
2.1 KiB
SQL
55 lines
2.1 KiB
SQL
CREATE TABLE host (
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ts timestamp(3) time index,
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host STRING PRIMARY KEY,
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val BIGINT,
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);
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INSERT INTO TABLE host VALUES
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("2024-01-23T22:30:00+00:00", 'host1', 0),
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("2024-01-23T23:30:00+00:00", 'host1', 1),
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("2024-01-24T22:30:00+00:00", 'host1', 2),
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("2024-01-24T23:30:00+00:00", 'host1', 3),
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("2024-01-23T22:30:00+00:00", 'host2', 4),
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("2024-01-23T23:30:00+00:00", 'host2', 5),
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("2024-01-24T22:30:00+00:00", 'host2', 6),
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("2024-01-24T23:30:00+00:00", 'host2', 7);
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' ORDER BY host, ts;
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' TO UNKNOWN ORDER BY host, ts;
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' TO '1900-01-01T00:00:00+01:00' ORDER BY host, ts;
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' TO '2024-01-23T00:00:00+01:00' ORDER BY host, ts;
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' TO '2023-01-01T00:00:00+01:00' ORDER BY host, ts;
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SELECT ts, min(val) RANGE (INTERVAL '1' day) FROM host ALIGN (INTERVAL '1' day) TO '1900-01-01T00:00:00+01:00' by (1) ORDER BY ts;
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SELECT ts, min(val) RANGE (INTERVAL '2' day - INTERVAL '1' day) FROM host ALIGN (INTERVAL '2' day - INTERVAL '1' day) TO (now() - (now() + INTERVAL '1' hour)) by (1) ORDER BY ts;
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-- non-positive duration
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SELECT ts, min(val) RANGE (INTERVAL '1' day - INTERVAL '2' day) FROM host ALIGN (INTERVAL '1' day) TO '1900-01-01T00:00:00+01:00' by (1) ORDER BY ts;
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SELECT ts, min(val) RANGE (INTERVAL '1' day - INTERVAL '1' day) FROM host ALIGN (INTERVAL '1' day) TO '1900-01-01T00:00:00+01:00' by (1) ORDER BY ts;
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-- duration not all interval
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SELECT ts, min(val) RANGE (now() - INTERVAL '1' day) FROM host ALIGN (INTERVAL '1' day) TO '1900-01-01T00:00:00+01:00' by (1) ORDER BY ts;
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--- ALIGN TO with time zone ---
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set time_zone='Asia/Shanghai';
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---- align to 'Asia/Shanghai' unix epoch 0 ----
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' ORDER BY host, ts;
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set time_zone='+23:00';
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---- align to '+23:00' unix epoch 0 ----
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' ORDER BY host, ts;
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set time_zone='UTC';
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DROP TABLE host;
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