SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias n) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 1)
           Identifier n_nationkey
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier nation
          Function in (children 1)
           ExpressionList (children 2)
            Identifier n_name
            Literal Tuple_(\'WAKANDA\', \'GERMANY\')
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier customer
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier c_nationkey
        Identifier n.n_nationkey
