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https://github.com/GreptimeTeam/greptimedb.git
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b2074e3863
* chore: upgrade DataFusion family Signed-off-by: luofucong <luofc@foxmail.com> * chore: switch to released version of datafusion-pg-catalog --------- Signed-off-by: luofucong <luofc@foxmail.com> Co-authored-by: Ning Sun <sunning@greptime.com> Co-authored-by: Ning Sun <sunng@protonmail.com>
93 lines
2.9 KiB
Plaintext
93 lines
2.9 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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-- 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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|_|_|_|
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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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