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)
           Literal Int64_-1 (alias x)
           Identifier dummy
         SelectQuery (children 1)
          ExpressionList (children 2)
           Function arrayJoin (alias x) (children 1)
            ExpressionList (children 1)
             Literal Array_[Int64_-1]
           Identifier dummy