SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Function count (children 1)
     ExpressionList
    Function min (children 1)
     ExpressionList (children 1)
      Identifier sometimes_null
    Function max (children 1)
     ExpressionList (children 1)
      Identifier sometimes_null
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function file (children 1)
       ExpressionList (children 1)
        Literal \'02892.orc\'
   Function isNull (children 1)
    ExpressionList (children 1)
     Identifier sometimes_null
