SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Identifier dummy
           Literal Int64_-1 (alias x)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Identifier dummy
           Function arrayJoin (alias x) (children 1)
            ExpressionList (children 1)
             Literal Array_[Int64_-1]