duongcongtoai commented on issue #5492:
URL: https://github.com/apache/datafusion/issues/5492#issuecomment-2917215746

   There is also one thing i want to highlight, is that in DuckDB, a 
SubqueryExpr may result into 2 output expr after decorrelation, this is because 
they want to support this query
   ```select * from outer where (1,2) in (select col1,col2 in inner)```
   https://github.com/duckdb/duckdb/pull/15259/files


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