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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/08 17:54:03 UTC
[GitHub] [arrow-datafusion] yahoNanJing opened a new issue, #1835: Implement In Subquery
yahoNanJing opened a new issue, #1835:
URL: https://github.com/apache/arrow-datafusion/issues/1835
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[GitHub] [arrow-datafusion] alamb commented on issue #1835: Implement In Subquery
Posted by GitBox <gi...@apache.org>.
alamb commented on issue #1835:
URL: https://github.com/apache/arrow-datafusion/issues/1835#issuecomment-1093135999
Probably a dupe of https://github.com/apache/arrow-datafusion/issues/1209
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[GitHub] [arrow-datafusion] ygf11 commented on issue #1835: Implement physical plan for IN Subquery
Posted by "ygf11 (via GitHub)" <gi...@apache.org>.
ygf11 commented on issue #1835:
URL: https://github.com/apache/arrow-datafusion/issues/1835#issuecomment-1455395265
I think this has already done.
```sql
❯ explain select t1_id from t1 where t1_id in (select t2_id from t2);
+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------+
| plan_type | plan |
+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------+
| logical_plan | LeftSemi Join: t1.t1_id = __correlated_sq_1.t2_id |
| | TableScan: t1 projection=[t1_id] |
| | SubqueryAlias: __correlated_sq_1 |
| | Projection: t2.t2_id AS t2_id |
| | TableScan: t2 projection=[t2_id] |
...
❯ explain select t1_id from t1 where t1_id in (select t2_id from t2 where t2_int > t1_int);
+---------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| plan_type | plan |
+---------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| logical_plan | Projection: t1.t1_id |
| | LeftSemi Join: t1.t1_id = __correlated_sq_2.t2_id Filter: __correlated_sq_2.t2_int > t1.t1_int |
| | TableScan: t1 projection=[t1_id, t1_int] |
| | SubqueryAlias: __correlated_sq_2 |
| | Projection: t2.t2_id AS t2_id, t2.t2_int |
| | TableScan: t2 projection=[t2_id, t2_int]
```
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[GitHub] [arrow-datafusion] alamb closed issue #1835: Implement In Subquery
Posted by GitBox <gi...@apache.org>.
alamb closed issue #1835: Implement In Subquery
URL: https://github.com/apache/arrow-datafusion/issues/1835
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[GitHub] [arrow-datafusion] alamb closed issue #1835: Implement physical plan for IN Subquery
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #1835: Implement physical plan for IN Subquery
URL: https://github.com/apache/arrow-datafusion/issues/1835
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