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**Maven Pom.xml**
```xml
io.github.datafusion-contrib
datafusion-java
0.15.0
```
**Code:**
```Java
SessionContext context = SessionContexts.create();
System.out.println(…
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# Josiah Parry - Building a DataFusion CSV reader with arrow-extendr
[https://josiahparry.com/posts/2023-11-24-dfusionrdr/](https://josiahparry.com/posts/2023-11-24-dfusionrdr/)
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Implement some CLI binaries for working with ORC files such as reading schema, getting stats, etc.
Tools to have:
- View footer metadata
- Initial version: https://github.com/datafusion-contr…
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**Describe the bug**
This is a MRE for a query that results in this error:
```
InvalidArgumentError("Column 'COUNT(DISTINCT tbl.col2)[count distinct]' is declared as non-nullable but contains nul…
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### What type of enhancement is this?
Tech debt reduction, Other
### What does the enhancement do?
Sooner or later we should upgrade it. I'd create this ticket to collect information, since this up…
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### Is your feature request related to a problem or challenge?
This is a follow on to https://github.com/apache/arrow-datafusion/issues/8913 that tracks additional improvements to the `TreeNode` AP…
alamb updated
4 months ago
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refer:
https://github.com/datafusion-contrib/datafusion-python
https://arrow.apache.org/datafusion/
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**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
DataFusion offers sophisticated "filter pushdown" optimizations into `LogicalPlan::TableScan`…
alamb updated
8 months ago
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**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
In https://github.com/apache/arrow-datafusion/issues/4346 from DataFusion, we have a check th…
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**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
Frequently when we are working on a set of new features or data analytics we find recurring…