Github user gatorsmile commented on a diff in the pull request:

    https://github.com/apache/spark/pull/11466#discussion_r55118235
  
    --- Diff: 
sql/hive/src/main/scala/org/apache/spark/sql/hive/SQLBuilder.scala ---
    @@ -78,6 +78,27 @@ class SQLBuilder(logicalPlan: LogicalPlan, sqlContext: 
SQLContext) extends Loggi
         }
       }
     
    +  private def toSQL(node: LogicalPlan, topNode: Boolean): String = {
    --- End diff --
    
    If my understanding is not wrong, you want to support SQL generation from a 
partial analyzed plan. If so, do you have any use case?
    
    So far, our SQL generation assumes the plan is complete and generated by 
the SQL parser. If not, I am afraid, it could generate a wrong SQL statement.


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