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Posted to github@arrow.apache.org by "mustafasrepo (via GitHub)" <gi...@apache.org> on 2023/03/14 07:06:00 UTC
[GitHub] [arrow-datafusion] mustafasrepo opened a new issue, #5586: Add support for bounded Groups execution
mustafasrepo opened a new issue, #5586:
URL: https://github.com/apache/arrow-datafusion/issues/5586
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
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When I run the query below
```sql
SELECT
SUM(c6) OVER(ORDER BY c2 GROUPS BETWEEN 1 PRECEDING AND 1 FOLLOWING) as sum1
FROM aggregate_test_100
```
It produces following plan
```sql
"ProjectionExec: expr=[SUM(aggregate_test_100.c6) ORDER BY [aggregate_test_100.c2 ASC NULLS LAST] GROUPS BETWEEN 1 PRECEDING AND 1 FOLLOWING@13 as sum1]",
" WindowAggExec: wdw=[SUM(aggregate_test_100.c6): Ok(Field { name: \"SUM(aggregate_test_100.c6)\", data_type: Int64, nullable: true, dict_id: 0, dict_is_ordered: false, metadata: {} }), frame: WindowFrame { units: Groups, start_bound: Preceding(UInt64(1)), end_bound: Following(UInt64(1)) }]",
" SortExec: expr=[c2@1 ASC NULLS LAST]",
" CsvExec: files={1 group: [[file_path]]}, has_header=true, limit=None, projection=[c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12, c13]",
```
theoretically, this query can run using `BoundedWindowAggExec` which enables us to not break pipeline. Add support for `GROUPS` in the `BoundedWindowAggExec`.
**Describe the solution you'd like**
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I would like above query to generate following plan
```sql
"ProjectionExec: expr=[SUM(aggregate_test_100.c6) ORDER BY [aggregate_test_100.c2 ASC NULLS LAST] GROUPS BETWEEN 1 PRECEDING AND 1 FOLLOWING@13 as sum1]",
" BoundedWindowAggExec: wdw=[SUM(aggregate_test_100.c6): Ok(Field { name: \"SUM(aggregate_test_100.c6)\", data_type: Int64, nullable: true, dict_id: 0, dict_is_ordered: false, metadata: {} }), frame: WindowFrame { units: Groups, start_bound: Preceding(UInt64(1)), end_bound: Following(UInt64(1)) }]",
" SortExec: expr=[c2@1 ASC NULLS LAST]",
" CsvExec: files={1 group: [[file_path]]}, has_header=true, limit=None, projection=[c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12, c13]",
```
**Describe alternatives you've considered**
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**Additional context**
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[GitHub] [arrow-datafusion] alamb closed issue #5586: Add support for bounded Groups execution
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #5586: Add support for bounded Groups execution
URL: https://github.com/apache/arrow-datafusion/issues/5586
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