datafusion

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correctly build nullability information in values exec

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## Which issue does this PR close? Closes #7693. ## Rationale for this change ## What changes are included in this PR? ## Are these changes tested? ## Are there...

matthewgapp

Add an option to avoid grouping hash-partitioning

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### Is your feature request related to a problem or challenge? We have run into a an issue in IOx and described [here](https://github.com/influxdata/arrow-datafusion/pull/4) that the `Union` is converted to `Interleave`...

NGA-TRAN

fix: preserve more dictionaries when coercing types

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## Which issue does this PR close? Closes https://github.com/apache/datafusion/issues/10220 ## Rationale for this change Loosen the restriction on when type coercion will preserve dictionary types to prevent slow casting of...

erratic-pattern

Complete support for `Expr --> String `

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### Is your feature request related to a problem or challenge? This ticket tracks the remaining work to complete https://github.com/apache/arrow-datafusion/issues/9495 As @devinjdangelo says in https://github.com/apache/arrow-datafusion/issues/9494#issuecomment-2007108672 We now have a solid...

alamb

Trailing comma output misleading error message

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### Describe the bug Putting a trailing comma after the last column/expression within a select statement produces a misleading error message. ### To Reproduce When running the following: ```sql create...

alexandreyc

Read encrypted PARQUET files

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### Is your feature request related to a problem or challenge? I'm trying to use DATAFUSION to load some parquet-encrypted files, but I can't find the option to set the...

jaimesalvador

cannot sum an unnest result

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### Describe the bug I cannot sum an unnest result, it reports following error message. ```sql > select unnest(generate_series(1,10)); +---------------------------------------------+ | unnest(generate_series(Int64(1),Int64(10))) | +---------------------------------------------+ | 1 | | 2 |...

l1t1

Docs for `ExecutionPlanVisitor`

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### Is your feature request related to a problem or challenge? I've had to write a couple `ExecutionPlanVisitor`s recently (see below) and when I started I initially looked for some...

matthewmturner

Make it possible to disable compression algorithm feature flags inside the parquet dependency without disabling parquet.

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### Is your feature request related to a problem or challenge? Hi, I'm trying to reduce the size of my compiled binary. Using cargo bloat, it appears that a large...

adamfaulkner-at

support `skip_rows` for `CsvFormat`

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### Is your feature request related to a problem or challenge? Some tools generate CSVs that contain some extra data at the top or bottom, such as bank statement exports...

universalmind303