rkrishn7 opened a new issue, #14550:
URL: https://github.com/apache/datafusion/issues/14550

   ### Describe the bug
   
   In, #14394, it was reported that while attempting to implement a `DataSink` 
different schemas for the record batches were being given than per the 
`RecordBatchStream`. 
   
   A fix for the given example, an `INSERT INTO ... VALUES` query, was merged 
(#14472). However, this issue likely arises when the schema of the source of an 
`INSERT` statement contain fields that differ from the table schema in terms of 
nullability. That is, the problem is not just limited to `INSERT INTO ... 
VALUES` statements.
   
   
   ### To Reproduce
   
   _No response_
   
   ### Expected behavior
   
   _No response_
   
   ### Additional context
   
   A better approach may be to map the schema of the source plan to a new 
schema that demonstrates parity in field nullability (if possible) with the 
table schema. We could do this directly when planning the insert, after 
constructing the source `LogicalPlan`. In `insert_to_plan`.
   


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