SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier customer
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier nation
     TableJoin
   Function and (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Function plus (children 1)
        ExpressionList (children 2)
         Identifier c_nationkey
         Literal UInt64_1
       Identifier n_nationkey
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier n_name
       Literal \'FRANCE\'
