SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias js1) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 2)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier a
           TablesInSelectQueryElement (children 2)
            TableExpression (children 1)
             TableIdentifier id1
            TableJoin (children 1)
             ExpressionList (children 1)
              Identifier id1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier id2
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier id2
