Hisoka-X commented on PR #41531:
URL: https://github.com/apache/spark/pull/41531#issuecomment-1586537465

   > Can you ensure MySQL or Snowflake's behaviors are client-side or 
server-side?
   
   Snowflake can config binary store type (default hex) or display type 
(default dex). Refer
   https://docs.snowflake.com/en/user-guide/binary-input-output
   
https://docs.snowflake.com/en/user-guide/binary-input-output#file-format-option-for-loading-unloading-binary-values
   
   I'm not sure about MySQL server behaviors, only said `store byte strings` in 
the doc.
   
![image](https://github.com/apache/spark/assets/32387433/8143fba6-4ad7-414e-b056-8e65492b25af)
   https://dev.mysql.com/doc/refman/8.0/en/binary-varbinary.html
   
   > Changes here do break for the JDBC ResultSet.getObject function, which 
coverts this binary string to byte array again.
   
   @yaooqinn Thanks for guidance. So I think add a config 
`spark.sql.hive.bytesToHex` for spark-sql will be reasonable. Or add a 
parameter to identify whether the invoke is from `spark-sql` or `thrift-server`.
   


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