SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Literal NULL
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias js1) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 1)
          ExpressionList (children 3)
           Literal NULL
           Literal UInt64_1 (alias a)
           Function CAST (alias c) (children 1)
            ExpressionList (children 2)
             Literal \'0\'
             Literal \'Nullable(UInt8)\'
         SelectQuery (children 1)
          ExpressionList (children 3)
           Literal NULL
           Literal UInt64_65536
           Literal NULL
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (alias js2) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function CAST (alias a) (children 1)
            ExpressionList (children 2)
             Literal \'2\'
             Literal \'Nullable(UInt8)\'
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier a
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier c
