mirror of
https://github.com/GreptimeTeam/greptimedb.git
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0d90f7407c
* rough fix Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * reorganize Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * simplification Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * fix format Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * add comment Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * enhance default by infer Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * supply comments Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * update sqlness result Signed-off-by: Ruihang Xia <waynestxia@gmail.com> --------- Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
169 lines
5.3 KiB
Plaintext
169 lines
5.3 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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(0, 'host1', 0),
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(5000, 'host1', null),
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(10000, 'host1', 1),
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(15000, 'host1', null),
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(20000, 'host1', 2),
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(0, 'host2', 3),
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(5000, 'host2', null),
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(10000, 'host2', 4),
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(15000, 'host2', null),
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(20000, 'host2', 5);
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Affected Rows: 10
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-- Test range query in nest sql
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SELECT ts, host, foo FROM (SELECT ts, host, min(val) RANGE '5s' AS foo FROM host ALIGN '5s') WHERE host = 'host1' ORDER BY host, ts;
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+---------------------+-------+-----+
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| ts | host | foo |
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+---------------------+-------+-----+
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| 1970-01-01T00:00:00 | host1 | 0 |
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| 1970-01-01T00:00:05 | host1 | |
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| 1970-01-01T00:00:10 | host1 | 1 |
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| 1970-01-01T00:00:15 | host1 | |
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| 1970-01-01T00:00:20 | host1 | 2 |
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+---------------------+-------+-----+
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SELECT ts, b, min(c) RANGE '5s' FROM (SELECT ts, host AS b, val AS c FROM host WHERE host = 'host1') ALIGN '5s' BY (b) ORDER BY b, ts;
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+---------------------+-------+-----------------+
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| ts | b | min(c) RANGE 5s |
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+---------------------+-------+-----------------+
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| 1970-01-01T00:00:00 | host1 | 0 |
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| 1970-01-01T00:00:05 | host1 | |
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| 1970-01-01T00:00:10 | host1 | 1 |
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| 1970-01-01T00:00:15 | host1 | |
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| 1970-01-01T00:00:20 | host1 | 2 |
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+---------------------+-------+-----------------+
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CREATE TABLE host_union_0 (
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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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ts2 timestamp(3),
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);
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Affected Rows: 0
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CREATE TABLE host_union_1 (
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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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ts2 timestamp(3),
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);
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Affected Rows: 0
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INSERT INTO TABLE host_union_0 VALUES
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(0, 'host1', 3, 0),
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(5000, 'host1', 2, 5000),
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(10000, 'host1', 1, 10000);
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Affected Rows: 3
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INSERT INTO TABLE host_union_1 VALUES
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(0, 'host1', 6, 0),
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(5000, 'host1', 5, 5000),
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(10000, 'host1', 4, 10000);
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Affected Rows: 3
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SELECT ts, host, min(val ORDER BY ts ASC) RANGE '5s'
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FROM (
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SELECT ts, host, val, ts2 FROM host_union_0
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UNION ALL
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SELECT ts, host, val, ts2 FROM host_union_1
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)
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WHERE ts >= '1970-01-01 00:00:00'
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ALIGN '5s' BY (host)
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ORDER BY host, ts;
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+---------------------+-------+------------------------------------------------+
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| ts | host | min(val) ORDER BY [ts ASC NULLS LAST] RANGE 5s |
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+---------------------+-------+------------------------------------------------+
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| 1970-01-01T00:00:00 | host1 | 3 |
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| 1970-01-01T00:00:05 | host1 | 2 |
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| 1970-01-01T00:00:10 | host1 | 1 |
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+---------------------+-------+------------------------------------------------+
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SELECT tmp.ts, tmp.host, min(tmp.val ORDER BY tmp.ts ASC) RANGE '5s'
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FROM (
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SELECT ts, host, val, ts2 FROM host_union_0
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UNION ALL
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SELECT ts, host, val, ts2 FROM host_union_1
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) AS tmp
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WHERE tmp.ts >= '1970-01-01 00:00:00'
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ALIGN '5s' BY (tmp.host)
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ORDER BY tmp.host, tmp.ts;
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+---------------------+-------+--------------------------------------------------------+
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| ts | host | min(tmp.val) ORDER BY [tmp.ts ASC NULLS LAST] RANGE 5s |
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+---------------------+-------+--------------------------------------------------------+
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| 1970-01-01T00:00:00 | host1 | 3 |
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| 1970-01-01T00:00:05 | host1 | 2 |
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| 1970-01-01T00:00:10 | host1 | 1 |
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+---------------------+-------+--------------------------------------------------------+
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DROP TABLE host_union_0;
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Affected Rows: 0
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DROP TABLE host_union_1;
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Affected Rows: 0
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-- Test EXPLAIN and ANALYZE
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-- SQLNESS REPLACE (-+) -
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-- SQLNESS REPLACE (\s\s+) _
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-- SQLNESS REPLACE (peers.*) REDACTED
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-- SQLNESS REPLACE (metrics.*) REDACTED
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EXPLAIN SELECT ts, host, min(val) RANGE '5s' FROM host ALIGN '5s';
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+-+-+
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| plan_type_| plan_|
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+-+-+
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| logical_plan_| RangeSelect: range_exprs=[min(host.val) RANGE 5s], align=5000ms, align_to=0ms, align_by=[host.host], time_index=ts |
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|_|_Projection: host.ts, host.host, host.val_|
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|_|_MergeScan [is_placeholder=false, remote_input=[_|
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|_| TableScan: host_|
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|_| ]]_|
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| physical_plan | RangeSelectExec: range_expr=[min(host.val) RANGE 5s], align=5000ms, align_to=0ms, align_by=[host@1], time_index=ts |
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|_|_CoalescePartitionsExec_|
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|_|_MergeScanExec: REDACTED
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|_|_|
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+-+-+
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-- SQLNESS REPLACE (-+) -
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-- SQLNESS REPLACE (\s\s+) _
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-- SQLNESS REPLACE (peers.*) REDACTED
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-- SQLNESS REPLACE (metrics.*) REDACTED
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-- SQLNESS REPLACE region=\d+\(\d+,\s+\d+\) region=REDACTED
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EXPLAIN ANALYZE SELECT ts, host, min(val) RANGE '5s' FROM host ALIGN '5s';
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+-+-+-+
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| stage | node | plan_|
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+-+-+-+
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| 0_| 0_|_RangeSelectExec: range_expr=[min(host.val) RANGE 5s], align=5000ms, align_to=0ms, align_by=[host@1], time_index=ts REDACTED
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|_|_|_CoalescePartitionsExec REDACTED
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|_|_|_MergeScanExec: REDACTED
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| 1_| 0_|_CooperativeExec REDACTED
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|_|_|_SeqScan: region=REDACTED, "partition_count":{"count":1, "mem_ranges":1, "files":0, "file_ranges":0} REDACTED
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|_|_| Total rows: 10_|
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+-+-+-+
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DROP TABLE host;
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Affected Rows: 0
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