JasonLi

**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** A clear and concise description of what the problem is. Ex. I'm...

## Which issue does this PR close? Closes #. ## Rationale for this change sqlparser supports `Value::EscapedStringLiteral`，but datafusion doesn't implement it. ## What changes are included in this PR? ##...

feat: support `grouping` aggregate function

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## Which issue does this PR close? Closes #. ## Rationale for this change Currently datafusion does not implement `grouping` function. https://github.com/apache/datafusion/blob/4edbdd7d09d97f361748c086afbd7b3dda972f76/datafusion/physical-expr/src/aggregate/grouping.rs#L80-L84 ## What changes are included in this PR?...

Optimization: make the most of Hint::AcceptsSingular when call make_scalar_function to Improve performance

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## Which issue does this PR close? Closes https://github.com/apache/arrow-datafusion/issues/10053 ## Rationale for this change ### Benchmark #### `overlay` function ```shell Gnuplot not found, using plotters backend 4args_with_3scalars/overlay/1024 time: [36.540 µs...

Make `alias_symbol` more human-readable

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### Is your feature request related to a problem or challenge? ```shell DataFusion CLI v37.1.0 > select * from number; +----+----+----+ | c0 | c1 | c2 | +----+----+----+ |...

fix(optimizer): optimize_projections rule bug

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## Which issue does this PR close? Closes https://github.com/apache/datafusion/issues/12183 ## Rationale for this change ## What changes are included in this PR? ## Are these changes tested? ## Are there...

### Describe the bug ## SQL ```sql SELECT "test.a" FROM (SELECT a AS "test.a" FROM test) ``` ## Bug Error: Context("Optimizer rule 'optimize_projections' failed", Context("optimize_projections", Internal("Failed due to a difference...

Generate GroupByHash output in multiple RecordBatches

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## Which issue does this PR close? Closes https://github.com/apache/datafusion/issues/9562 If the community thinks this PR is reasonable, I will continue the work: - [ ] 1. Eliminate redundant code -...