mirror of
https://github.com/GreptimeTeam/greptimedb.git
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77223a0f3e
* fix: use alias expr to check commutativity * chore: debug sort * feat: consider alias in window sort optimizer * test: sqlness test * test: update sqlness result
136 lines
12 KiB
Plaintext
136 lines
12 KiB
Plaintext
explain select * from numbers;
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+---------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| logical_plan | MergeScan [is_placeholder=false] |
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| physical_plan | StreamScanAdapter: [<SendableRecordBatchStream>], schema: [Schema { fields: [Field { name: "number", data_type: UInt32, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {"greptime:version": "0"} }] |
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+---------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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explain select * from numbers order by number desc;
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| logical_plan | MergeScan [is_placeholder=false] |
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| physical_plan | SortExec: expr=[number@0 DESC], preserve_partitioning=[false] |
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| | StreamScanAdapter: [<SendableRecordBatchStream>], schema: [Schema { fields: [Field { name: "number", data_type: UInt32, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {"greptime:version": "0"} }] |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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explain select * from numbers order by number asc;
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| logical_plan | MergeScan [is_placeholder=false] |
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| physical_plan | SortExec: expr=[number@0 ASC NULLS LAST], preserve_partitioning=[false] |
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| | StreamScanAdapter: [<SendableRecordBatchStream>], schema: [Schema { fields: [Field { name: "number", data_type: UInt32, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {"greptime:version": "0"} }] |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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explain select * from numbers order by number desc limit 10;
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| logical_plan | MergeScan [is_placeholder=false] |
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| physical_plan | SortExec: TopK(fetch=10), expr=[number@0 DESC], preserve_partitioning=[false] |
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| | StreamScanAdapter: [<SendableRecordBatchStream>], schema: [Schema { fields: [Field { name: "number", data_type: UInt32, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {"greptime:version": "0"} }] |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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explain select * from numbers order by number asc limit 10;
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| plan_type | plan |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| logical_plan | MergeScan [is_placeholder=false] |
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| physical_plan | SortExec: TopK(fetch=10), expr=[number@0 ASC NULLS LAST], preserve_partitioning=[false] |
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| | StreamScanAdapter: [<SendableRecordBatchStream>], schema: [Schema { fields: [Field { name: "number", data_type: UInt32, nullable: false, dict_id: 0, dict_is_ordered: false, metadata: {} }], metadata: {"greptime:version": "0"} }] |
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+---------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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CREATE TABLE test_pk(pk INTEGER PRIMARY KEY, i INTEGER, t TIMESTAMP TIME INDEX) WITH('compaction.type'='twcs', 'compaction.twcs.max_inactive_window_files'='4');
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Affected Rows: 0
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INSERT INTO test_pk VALUES (1, 1, 1), (2, NULL, 2), (3, 1, 3), (4, 2, 4), (5, 2, 5), (6, NULL, 6);
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Affected Rows: 6
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-- Test aliasing.
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SELECT i, t AS alias_ts FROM test_pk ORDER BY t DESC LIMIT 5;
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+---+-------------------------+
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| i | alias_ts |
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+---+-------------------------+
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| | 1970-01-01T00:00:00.006 |
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| 2 | 1970-01-01T00:00:00.005 |
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| 2 | 1970-01-01T00:00:00.004 |
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| 1 | 1970-01-01T00:00:00.003 |
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| | 1970-01-01T00:00:00.002 |
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+---+-------------------------+
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-- Test aliasing.
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SELECT i, t AS alias_ts FROM test_pk ORDER BY alias_ts DESC LIMIT 5;
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+---+-------------------------+
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| i | alias_ts |
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+---+-------------------------+
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| | 1970-01-01T00:00:00.006 |
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| 2 | 1970-01-01T00:00:00.005 |
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| 2 | 1970-01-01T00:00:00.004 |
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| 1 | 1970-01-01T00:00:00.003 |
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| | 1970-01-01T00:00:00.002 |
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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 i, t AS alias_ts FROM test_pk ORDER BY t DESC LIMIT 5;
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+-+-+-+
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| stage | node | plan_|
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+-+-+-+
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| 0_| 0_|_MergeScanExec: REDACTED
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|_|_|_|
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| 1_| 0_|_ProjectionExec: expr=[i@0 as i, alias_ts@1 as alias_ts] REDACTED
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|_|_|_SortPreservingMergeExec: [t@2 DESC] REDACTED
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|_|_|_WindowedSortExec: expr=t@2 DESC num_ranges=1 fetch=5 REDACTED
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|_|_|_PartSortExec: expr=t@2 DESC num_ranges=1 limit=5 REDACTED
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|_|_|_ProjectionExec: expr=[i@0 as i, t@1 as alias_ts, t@1 as t] REDACTED
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|_|_|_SeqScan: region=REDACTED, partition_count=1 (1 memtable ranges, 0 file 0 ranges) REDACTED
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|_|_|_|
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|_|_| Total rows: 5_|
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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 i, t AS alias_ts FROM test_pk ORDER BY alias_ts DESC LIMIT 5;
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+-+-+-+
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| stage | node | plan_|
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+-+-+-+
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| 0_| 0_|_MergeScanExec: REDACTED
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|_|_|_|
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| 1_| 0_|_SortPreservingMergeExec: [alias_ts@1 DESC] REDACTED
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|_|_|_WindowedSortExec: expr=alias_ts@1 DESC num_ranges=1 fetch=5 REDACTED
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|_|_|_PartSortExec: expr=alias_ts@1 DESC num_ranges=1 limit=5 REDACTED
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|_|_|_ProjectionExec: expr=[i@0 as i, t@1 as alias_ts] REDACTED
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|_|_|_SeqScan: region=REDACTED, partition_count=1 (1 memtable ranges, 0 file 0 ranges) REDACTED
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|_|_| Total rows: 5_|
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+-+-+-+
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DROP TABLE test_pk;
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Affected Rows: 0
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