Add distinct_on to dataframe api #11012
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I merged this branch up from main to resolve a merge conflict |
comphead
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Jun 21, 2024
| /// # async fn main() -> Result<()> { | ||
| /// let ctx = SessionContext::new(); | ||
| /// let df = ctx.read_csv("tests/data/example.csv", CsvReadOptions::new()).await? | ||
| /// // Return a single row (a, b) for each distinct value of a |
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Wondering if DISTINCT supports all types, incl binary, complex, etc? if its not we should be mentioning it in the doc, and double check it returns a respective error instead of crash/corruption
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It is a good idea -- I filed #11052 to track
However, I think it is not required for this PR so I merged it in
xinlifoobar
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Jun 22, 2024
* Add distinct_on to dataframe api apache#11011 * cargo fmt * Update datafusion/core/src/dataframe/mod.rs as per reviewer feedback Co-authored-by: Andrew Lamb <[email protected]> --------- Co-authored-by: Andrew Lamb <[email protected]>
xinlifoobar
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* Add distinct_on to dataframe api apache#11011 * cargo fmt * Update datafusion/core/src/dataframe/mod.rs as per reviewer feedback Co-authored-by: Andrew Lamb <[email protected]> --------- Co-authored-by: Andrew Lamb <[email protected]>
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findepi
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Jul 16, 2024
* Add distinct_on to dataframe api apache#11011 * cargo fmt * Update datafusion/core/src/dataframe/mod.rs as per reviewer feedback Co-authored-by: Andrew Lamb <[email protected]> --------- Co-authored-by: Andrew Lamb <[email protected]>
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Which issue does this PR close?
Closes #11011
Rationale for this change
Add distinct_on to the dataframe api.
What changes are included in this PR?
code, tests, documentation
Are these changes tested?
Yes via tests in dataframe/mod.rs
Are there any user-facing changes?
dataframe API was amended.