kosiew commented on issue #850:
URL: 
https://github.com/apache/datafusion-python/issues/850#issuecomment-2478565228

   Did some digging and `Error during planning: Unsupported operator in the 
subquery plan.
   ` could be due to 
   
   `select *,min_height*width1 from t where min_height*width1 = (select 
max(min_height*width1)from t);`
   
   Here is the logical plan excerpt:
   
   
   Filter { predicate: BinaryExpr {
     left: BinaryExpr {
       left: BinaryExpr { 
         left: Column(Column { relation: Some(Bare { table: "t" }), name: 
"min_height" }),
         op: Multiply,
         right: Column(Column { relation: Some(Bare { table: "t" }), name: 
"width1" })
       },
       op: Eq,
       right: ScalarSubquery(<subquery>)
     }
   }}
   
   
   


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