mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-01-07 22:02:56 +00:00
4c693799d8
* fix: prevent optimize merge scan, mark distinct as unsupported Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * fix some other problems Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * fix unit tests Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * remove deadcode Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * add some comments Signed-off-by: Ruihang Xia <waynestxia@gmail.com> * Update src/query/src/optimizer/type_conversion.rs Co-authored-by: Lei, HUANG <6406592+v0y4g3r@users.noreply.github.com> --------- Signed-off-by: Ruihang Xia <waynestxia@gmail.com> Co-authored-by: Lei, HUANG <6406592+v0y4g3r@users.noreply.github.com>
70 lines
2.0 KiB
Plaintext
70 lines
2.0 KiB
Plaintext
CREATE TABLE single_partition(i DOUBLE, j TIMESTAMP TIME INDEX, k STRING PRIMARY KEY);
|
|
|
|
Affected Rows: 0
|
|
|
|
-- SQLNESS REPLACE (-+) -
|
|
-- SQLNESS REPLACE (\s\s+) _
|
|
-- SQLNESS REPLACE (RoundRobinBatch.*) REDACTED
|
|
-- SQLNESS REPLACE (Hash.*) REDACTED
|
|
-- SQLNESS REPLACE (peer-.*) REDACTED
|
|
EXPLAIN SELECT COUNT(*) FROM single_partition;
|
|
|
|
+-+-+
|
|
| plan_type_| plan_|
|
|
+-+-+
|
|
| logical_plan_| Aggregate: groupBy=[[]], aggr=[[COUNT(UInt8(1))]]_|
|
|
|_|_Projection:_|
|
|
|_|_MergeScan [is_placeholder=false]_|
|
|
| physical_plan | AggregateExec: mode=Final, gby=[], aggr=[COUNT(UInt8(1))]_|
|
|
|_|_CoalescePartitionsExec_|
|
|
|_|_AggregateExec: mode=Partial, gby=[], aggr=[COUNT(UInt8(1))]_|
|
|
|_|_RepartitionExec: partitioning=REDACTED
|
|
|_|_ProjectionExec: expr=[]_|
|
|
|_|_MergeScanExec: peers=[REDACTED
|
|
|_|_|
|
|
+-+-+
|
|
|
|
-- SQLNESS REPLACE (-+) -
|
|
-- SQLNESS REPLACE (\s\s+) _
|
|
-- SQLNESS REPLACE (RoundRobinBatch.*) REDACTED
|
|
-- SQLNESS REPLACE (Hash.*) REDACTED
|
|
-- SQLNESS REPLACE (peer-.*) REDACTED
|
|
EXPLAIN SELECT SUM(i) FROM single_partition;
|
|
|
|
+-+-+
|
|
| plan_type_| plan_|
|
|
+-+-+
|
|
| logical_plan_| Aggregate: groupBy=[[]], aggr=[[SUM(single_partition.i)]]_|
|
|
|_|_Projection: single_partition.i_|
|
|
|_|_MergeScan [is_placeholder=false]_|
|
|
| physical_plan | AggregateExec: mode=Final, gby=[], aggr=[SUM(single_partition.i)]_|
|
|
|_|_CoalescePartitionsExec_|
|
|
|_|_AggregateExec: mode=Partial, gby=[], aggr=[SUM(single_partition.i)]_|
|
|
|_|_RepartitionExec: partitioning=REDACTED
|
|
|_|_ProjectionExec: expr=[i@0 as i]_|
|
|
|_|_MergeScanExec: peers=[REDACTED
|
|
|_|_|
|
|
+-+-+
|
|
|
|
-- SQLNESS REPLACE (-+) -
|
|
-- SQLNESS REPLACE (\s\s+) _
|
|
-- SQLNESS REPLACE (RoundRobinBatch.*) REDACTED
|
|
-- SQLNESS REPLACE (Hash.*) REDACTED
|
|
-- SQLNESS REPLACE (peer-.*) REDACTED
|
|
EXPLAIN SELECT * FROM single_partition ORDER BY i DESC;
|
|
|
|
+-+-+
|
|
| plan_type_| plan_|
|
|
+-+-+
|
|
| logical_plan_| Sort: single_partition.i DESC NULLS FIRST_|
|
|
|_|_MergeScan [is_placeholder=false]_|
|
|
| physical_plan | SortExec: expr=[i@0 DESC]_|
|
|
|_|_MergeScanExec: peers=[REDACTED
|
|
|_|_|
|
|
+-+-+
|
|
|
|
drop table single_partition;
|
|
|
|
Affected Rows: 1
|
|
|