[GitHub] [spark] maropu commented on issue #27648: [SPARK-24994][SQL] : Support filter pushdown for short and byte without explicit casting

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maropu commented on issue #27648: [SPARK-24994][SQL] : Support filter pushdown for short and byte without explicit casting
URL: https://github.com/apache/spark/pull/27648#issuecomment-589512300
 
 
   > 2 is within short range still filter is not pushed down.
   > But it pushes filter if we cast the literal to smallint:
   > select * from t where id = cast(2 as smallint) ; 
   
   Is that pushdown legal? if `id` is short, `id = 2` is parsed as `cast(id as int) = 2`. So, I feel that the semantics  are different between them.

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