alamb commented on issue #6677:
URL: 
https://github.com/apache/arrow-datafusion/issues/6677#issuecomment-1596101876

   ```
   +   ------HashJoinExec: mode=CollectLeft, join_type=Inner, on=[(Column { 
name: "join_t1.t1_id + Int64(11)", index: 3 }, Column { name: "Cast(Cast { 
expr: Column(Column { relation: Some(Bare { table: \"join_t2\" }), name: 
\"t2_id\" }), data_type: Int64 })", index: 3 })]
   ```
   
   I think this difference is due to this code using `"{:?}"` as a format 
string:
   
   
https://github.com/apache/arrow-datafusion/blob/867ce6ee492e9473dca268e728567d7ba765b202/datafusion/core/src/physical_plan/joins/hash_join.rs#L429-L430
   
   Perhaps we could change the HashJoin formatting code to use `{}` as the 
format string (aka `Display`)?


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