mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-01-14 17:23:09 +00:00
128 lines
5.5 KiB
Plaintext
128 lines
5.5 KiB
Plaintext
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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Affected Rows: 0
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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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Affected Rows: 8
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SELECT ts, host, min(val) RANGE '1d' FROM host ALIGN '1d' ORDER BY host, ts;
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+---------------------+-------+------------------------+
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| ts | host | MIN(host.val) RANGE 1d |
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+---------------------+-------+------------------------+
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| 2024-01-23T00:00:00 | host1 | 0 |
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| 2024-01-24T00:00:00 | host1 | 2 |
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| 2024-01-23T00:00:00 | host2 | 4 |
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| 2024-01-24T00:00:00 | host2 | 6 |
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+---------------------+-------+------------------------+
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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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Error: 3000(PlanQuery), DataFusion error: Error during planning: Illegal `align to` argument `UNKNOWN` in range select query, can't be parse as NOW/CALENDAR/Timestamp, error: Failed to parse a string into Timestamp, raw string: UNKNOWN
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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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+---------------------+-------+------------------------+
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| ts | host | MIN(host.val) RANGE 1d |
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+---------------------+-------+------------------------+
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| 2024-01-22T23:00:00 | host1 | 0 |
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| 2024-01-23T23:00:00 | host1 | 1 |
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| 2024-01-24T23:00:00 | host1 | 3 |
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| 2024-01-22T23:00:00 | host2 | 4 |
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| 2024-01-23T23:00:00 | host2 | 5 |
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| 2024-01-24T23:00:00 | host2 | 7 |
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+---------------------+-------+------------------------+
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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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+---------------------+-------+------------------------+
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| ts | host | MIN(host.val) RANGE 1d |
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+---------------------+-------+------------------------+
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| 2024-01-22T23:00:00 | host1 | 0 |
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| 2024-01-23T23:00:00 | host1 | 1 |
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| 2024-01-24T23:00:00 | host1 | 3 |
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| 2024-01-22T23:00:00 | host2 | 4 |
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| 2024-01-23T23:00:00 | host2 | 5 |
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| 2024-01-24T23:00:00 | host2 | 7 |
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+---------------------+-------+------------------------+
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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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+---------------------+-------+------------------------+
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| ts | host | MIN(host.val) RANGE 1d |
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+---------------------+-------+------------------------+
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| 2024-01-22T23:00:00 | host1 | 0 |
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| 2024-01-23T23:00:00 | host1 | 1 |
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| 2024-01-24T23:00:00 | host1 | 3 |
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| 2024-01-22T23:00:00 | host2 | 4 |
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| 2024-01-23T23:00:00 | host2 | 5 |
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| 2024-01-24T23:00:00 | host2 | 7 |
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+---------------------+-------+------------------------+
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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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+---------------------+------------------------------------------------------------------+
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| ts | MIN(host.val) RANGE IntervalMonthDayNano("18446744073709551616") |
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+---------------------+------------------------------------------------------------------+
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| 2024-01-22T23:00:00 | 0 |
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| 2024-01-23T23:00:00 | 1 |
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| 2024-01-24T23:00:00 | 3 |
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+---------------------+------------------------------------------------------------------+
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--- ALIGN TO with time zone ---
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set time_zone='Asia/Shanghai';
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Affected Rows: 0
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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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+---------------------+-------+------------------------+
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| ts | host | MIN(host.val) RANGE 1d |
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+---------------------+-------+------------------------+
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| 2024-01-23T08:00:00 | host1 | 0 |
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| 2024-01-24T08:00:00 | host1 | 2 |
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| 2024-01-23T08:00:00 | host2 | 4 |
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| 2024-01-24T08:00:00 | host2 | 6 |
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+---------------------+-------+------------------------+
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set time_zone='+23:00';
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Affected Rows: 0
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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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+---------------------+-------+------------------------+
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| ts | host | MIN(host.val) RANGE 1d |
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+---------------------+-------+------------------------+
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| 2024-01-22T23:00:00 | host1 | 0 |
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| 2024-01-23T23:00:00 | host1 | 1 |
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| 2024-01-24T23:00:00 | host1 | 3 |
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| 2024-01-22T23:00:00 | host2 | 4 |
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| 2024-01-23T23:00:00 | host2 | 5 |
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| 2024-01-24T23:00:00 | host2 | 7 |
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+---------------------+-------+------------------------+
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set time_zone='UTC';
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Affected Rows: 0
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DROP TABLE host;
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Affected Rows: 0
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