datafusion

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feature: Add a WindowUDFImpl::simplify() API

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## Which issue does this PR close? Closes #9527 . ## Rationale for this change allow user define simply rule ## What changes are included in this PR? add `WindowUDFImpl::simplfy()`...

guojidan

Make it easier to create WindowFunctions with the Expr API

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### Is your feature request related to a problem or challenge? Follow on to #5781 There are at least three things named `WindowFunction` in DataFusion -- `Expr::WindowFunction`, `window_function::WindowFunction` and `expr::WindowFunction`...

alamb

Document timezone semantics

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### Is your feature request related to a problem or challenge? The automatic coercion and comparison rules for timestamps with timezones (especially how timestamps with `None`) are treated is not...

alamb

binary_op should be handled by sql_expr_to_logical_expr.. This was likely caused by a bug in DataFusion's code

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### Describe the bug When casting a string to a timestamp with time zone as an argument, I get the following error: ``` Error while planning query: Internal error: binary_op...

Abdullahsab3

Using `date_bin` with a time zone in a time range that contains daylight savings does not work

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### Describe the bug When using the `date_bin` function, while providing a time zone to the column used in `date_bin` , and using a range that contains daylight savings (i.e....

Abdullahsab3

Minor: reuse the group key row buffer to avoid reallocation

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## Which issue does this PR close? Closes #. ## Rationale for this change Find code comments while reading the new aggregation code and tries to fix it here. ##...

yjshen

Use make_array to handle SQLExpr::Array.

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## Which issue does this PR close? Closes #7380. ## Rationale for this change ## What changes are included in this PR? ## Are these changes tested? ## Are there...

jiangzhx

## Which issue does this PR close? Closes #9370 . ## Rationale for this change ## What changes are included in this PR? ## Are these changes tested? ## Are...

edmondop

Fix: Sort Merge Join LeftSemi issues when JoinFilter is set

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## Which issue does this PR close? Closes #10379 . ## Rationale for this change Fixing some existing SMJ LeftSemi bugs when join filter is set. Currently the join either...

comphead

[Epic] A Collection of Sort Based Optimizations

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## Usecase Many analytic systems store their data with some particular sort order, and the query engine can often take advantage of this sort order to both reduce memory usage...

alamb