[GitHub] [arrow-datafusion] yjshen opened a new issue, #5873: FILTER Clause for Aggregate Functions

["yjshen (via GitHub)" <gi...@apache.org>]

yjshen opened a new issue, #5873:
URL: https://github.com/apache/arrow-datafusion/issues/5873

   ### Is your feature request related to a problem or challenge?
   
   Implement the FILTER clause for aggregate functions (introduced in SQL:2003). This syntax allows for filtering before aggregation.
   
   ```sql
   SUM(<expression>) FILTER(WHERE <condition>)
   ```
   
   ### Describe the solution you'd like
   
   _No response_
   
   ### Describe alternatives you've considered
   
   _No response_
   
   ### Additional context
   
   PostgreSQL: https://www.postgresql.org/docs/current/sql-expressions.html#SYNTAX-AGGREGATES
   Spark: https://spark.apache.org/docs/3.3.2/sql-ref-syntax-qry-select-groupby.html
   


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[GitHub] [arrow-datafusion] yjshen closed issue #5873: FILTER Clause for Aggregate Functions

["yjshen (via GitHub)" <gi...@apache.org>]

yjshen closed issue #5873: FILTER Clause for Aggregate Functions
URL: https://github.com/apache/arrow-datafusion/issues/5873


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