Tangruilin commented on PR #8947:
URL: 
https://github.com/apache/arrow-datafusion/pull/8947#issuecomment-1905240547

   > Thank you @Tangruilin -- this is a good start
   > 
   > I am worried about this approach as it seems to require that a plan 
produce an empty `RecordBatch` when it makes now rows, but I don't think they 
all do so (some will continue to not make any)
   > 
   > What would you think about changing the display logic in datafusion-cli to 
detect the case when there have been no record batches printed and in that case 
add / print an empty batch?
   > 
   > Perhaps changing this code:
   > 
   > 
https://github.com/apache/arrow-datafusion/blob/795c71f3e8249847593a58dafe578ffcbcd3e012/datafusion-cli/src/exec.rs#L203-L259
   
   but how can i get the rows that is selected if I change `exec_and_print `. 
Do you have some suggestion?


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