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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