2010YOUY01 opened a new issue, #18600: URL: https://github.com/apache/datafusion/issues/18600
### Is your feature request related to a problem or challenge? https://github.com/apache/datafusion/issues/18108 has added support for `percentile_cont`, and it is a commonly used function to inspect the distribution of a dataset. Currently, it only supports computing a single percentile per call. This proposal extends `percentile_cont` to accept an array of percentile arguments, allowing multiple percentiles to be computed in a single aggregation. I think this feature is quite ergonomic and also makes execution more efficient. DuckDB has already support it: ``` -- Calculating 1%, 5%, 10%, 50%, 90% percentile in one expression D SELECT percentile_cont([0.01, 0.05, 0.1, 0.5, 0.9]) WITHIN GROUP (ORDER BY l_orderkey) FROM '/Users/yongting/data/tpch_sf1/lineitem.parquet'; ┌───────────────────────────────────────────────────────────────────────────────┐ │ quantile_cont(main.list_value(0.01, 0.05, 0.1, 0.5, 0.9) ORDER BY l_orderkey) │ │ double[] │ ├───────────────────────────────────────────────────────────────────────────────┤ │ [59815.0, 300256.0, 599552.0, 3000961.0, 5400486.0] │ └───────────────────────────────────────────────────────────────────────────────┘ ``` (Data is generated with https://github.com/clflushopt/tpchgen-rs/tree/main/tpchgen-cli) ### Describe the solution you'd like _No response_ ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
