mirror of
https://github.com/GreptimeTeam/greptimedb.git
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403958f5ba
Signed-off-by: discord9 <discord9@163.com> poc: step aggr query Signed-off-by: discord9 <discord9@163.com> feat: mvp poc stuff Signed-off-by: discord9 <discord9@163.com> test: sqlness Signed-off-by: discord9 <discord9@163.com> chore: import missing Signed-off-by: discord9 <discord9@163.com> feat: support first/last_value Signed-off-by: discord9 <discord9@163.com> fix: check also include first/last value Signed-off-by: discord9 <discord9@163.com> chore: clean up after rebase feat: optimize yes! fix: alias qualifled test: more testcases chore: qualified column chore: per review
81 lines
5.8 KiB
Plaintext
81 lines
5.8 KiB
Plaintext
CREATE TABLE integers(
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host STRING,
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i BIGINT,
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ts TIMESTAMP TIME INDEX
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) PARTITION ON COLUMNS (host) (
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host < '550-A',
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host >= '550-A'
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AND host < '550-W',
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host >= '550-W'
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);
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Affected Rows: 0
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-- count
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EXPLAIN SELECT
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count(i)
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FROM
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integers;
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+---------------+-------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+-------------------------------------------------------------------------------------------------------+
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| logical_plan | Aggregate: groupBy=[[]], aggr=[[sum(count(integers.i)) AS count(integers.i)]] |
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| | MergeScan [is_placeholder=false, input=Aggregate: groupBy=[[]], aggr=[[count(integers.i)]] |
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| | TableScan: integers] |
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| physical_plan | AggregateExec: mode=Final, gby=[], aggr=[count(integers.i)] |
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| | CoalescePartitionsExec |
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| | AggregateExec: mode=Partial, gby=[], aggr=[count(integers.i)] |
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| | MergeScanExec: peers=[4398046511104(1024, 0), 4398046511105(1024, 1), 4398046511106(1024, 2), ] |
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+---------------+-------------------------------------------------------------------------------------------------------+
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EXPLAIN SELECT
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ts,
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count(i)
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FROM
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integers
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GROUP BY
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ts;
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+---------------+---------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+---------------------------------------------------------------------------------------------------------+
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| logical_plan | Aggregate: groupBy=[[integers.ts]], aggr=[[sum(count(integers.i)) AS count(integers.i)]] |
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| | MergeScan [is_placeholder=false, input=Aggregate: groupBy=[[integers.ts]], aggr=[[count(integers.i)]] |
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| | TableScan: integers] |
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| physical_plan | AggregateExec: mode=FinalPartitioned, gby=[ts@0 as ts], aggr=[count(integers.i)] |
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| | CoalesceBatchesExec: target_batch_size=8192 |
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| | RepartitionExec: partitioning=Hash([ts@0], 20), input_partitions=20 |
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| | AggregateExec: mode=Partial, gby=[ts@0 as ts], aggr=[count(integers.i)] |
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| | MergeScanExec: peers=[4398046511104(1024, 0), 4398046511105(1024, 1), 4398046511106(1024, 2), ] |
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+---------------+---------------------------------------------------------------------------------------------------------+
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EXPLAIN SELECT
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date_bin('1 hour'::INTERVAL, ts),
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count(i)
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FROM
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integers
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GROUP BY
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date_bin('1 hour'::INTERVAL, ts);
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+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| logical_plan | Aggregate: groupBy=[[date_bin(Utf8("1 hour"),integers.ts) AS date_bin(Utf8("1 hour"),integers.ts)]], aggr=[[sum(count(integers.i)) AS count(integers.i)]] |
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| | MergeScan [is_placeholder=false, input=Aggregate: groupBy=[[date_bin(CAST(Utf8("1 hour") AS Interval(MonthDayNano)), integers.ts)]], aggr=[[count(integers.i)]] |
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| | TableScan: integers] |
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| physical_plan | AggregateExec: mode=FinalPartitioned, gby=[date_bin(Utf8("1 hour"),integers.ts)@0 as date_bin(Utf8("1 hour"),integers.ts)], aggr=[count(integers.i)] |
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| | CoalesceBatchesExec: target_batch_size=8192 |
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| | RepartitionExec: partitioning=Hash([date_bin(Utf8("1 hour"),integers.ts)@0], 20), input_partitions=20 |
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| | AggregateExec: mode=Partial, gby=[date_bin(Utf8("1 hour"),integers.ts)@0 as date_bin(Utf8("1 hour"),integers.ts)], aggr=[count(integers.i)] |
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| | MergeScanExec: peers=[4398046511104(1024, 0), 4398046511105(1024, 1), 4398046511106(1024, 2), ] |
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+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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DROP TABLE integers;
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Affected Rows: 0
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