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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/06 09:49:36 UTC
[GitHub] [arrow-datafusion] jackwener opened a new issue, #2169: Optimizer enhancement: convert outer join to inner join
jackwener opened a new issue, #2169:
URL: https://github.com/apache/arrow-datafusion/issues/2169
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
```sql
table t1 | t2 (
c1 float,
c2 double,
c3 boolean
)
❯ explain select * from t1 left outer join t2 on t1.c1 = t2.c1 where t2.c3 = true;
+---------------+-----------------------------------------------------------------------------------------------------------------------------------------+
| plan_type | plan |
+---------------+-----------------------------------------------------------------------------------------------------------------------------------------+
| logical_plan | Projection: #t1.c1, #t1.c2, #t1.c3, #t2.c1, #t2.c2, #t2.c3 |
| | Filter: #t2.c3 |
| | Left Join: #t1.c1 = #t2.c1 |
| | TableScan: t1 projection=Some([0, 1, 2]) |
| | TableScan: t2 projection=Some([0, 1, 2]) |
| physical_plan | ProjectionExec: expr=[c1@0 as c1, c2@1 as c2, c3@2 as c3, c1@3 as c1, c2@4 as c2, c3@5 as c3] |
| | CoalesceBatchesExec: target_batch_size=4096 |
| | FilterExec: c3@5 |
| | CoalesceBatchesExec: target_batch_size=4096 |
| | HashJoinExec: mode=Partitioned, join_type=Left, on=[(Column { name: "c1", index: 0 }, Column { name: "c1", index: 0 })] |
| | CoalesceBatchesExec: target_batch_size=4096 |
| | RepartitionExec: partitioning=Hash([Column { name: "c1", index: 0 }], 8) |
| | RepartitionExec: partitioning=RoundRobinBatch(8) |
| | CsvExec: files=[/home/jakevin/code/arrow-datafusion/datafusion/tests/aggregate_simple.csv], has_header=true, limit=None |
| | CoalesceBatchesExec: target_batch_size=4096 |
| | RepartitionExec: partitioning=Hash([Column { name: "c1", index: 0 }], 8) |
| | RepartitionExec: partitioning=RoundRobinBatch(8) |
| | CsvExec: files=[/home/jakevin/code/arrow-datafusion/datafusion/tests/aggregate_simple.csv], has_header=true, limit=None |
| | |
+---------------+-----------------------------------------------------------------------------------------------------------------------------------------+
```
**Describe the solution you'd like**
Convert the outer join to inner join if we can.
**Describe alternatives you've considered**
**Additional context**
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[GitHub] [arrow-datafusion] xudong963 commented on issue #2169: Optimizer enhancement: convert outer join to inner join
Posted by GitBox <gi...@apache.org>.
xudong963 commented on issue #2169:
URL: https://github.com/apache/arrow-datafusion/issues/2169#issuecomment-1090265165
related: https://github.com/apache/arrow-datafusion/issues/1585
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[GitHub] [arrow-datafusion] jackwener closed issue #2169: Optimizer enhancement: convert outer join to inner join
Posted by GitBox <gi...@apache.org>.
jackwener closed issue #2169: Optimizer enhancement: convert outer join to inner join
URL: https://github.com/apache/arrow-datafusion/issues/2169
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[GitHub] [arrow-datafusion] jackwener commented on issue #2169: Optimizer enhancement: convert outer join to inner join
Posted by GitBox <gi...@apache.org>.
jackwener commented on issue #2169:
URL: https://github.com/apache/arrow-datafusion/issues/2169#issuecomment-1090324105
Whoops -- this is a dupe of https://github.com/apache/arrow-datafusion/issues/1585
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[GitHub] [arrow-datafusion] jackwener commented on issue #2169: Optimizer enhancement: convert outer join to inner join
Posted by GitBox <gi...@apache.org>.
jackwener commented on issue #2169:
URL: https://github.com/apache/arrow-datafusion/issues/2169#issuecomment-1090076124
I am trying to do this and it will take a while.
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