SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 4)
    Identifier k
    Identifier key
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier value2
    Identifier value2
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t2
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier rdb
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier rdb.key
        Identifier t2.k
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier k
   Set