SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Function pow (children 1)
     ExpressionList (children 2)
      Literal \'0.0000000257\'
      Literal NULL
    Function minus (children 1)
     ExpressionList (children 2)
      Function pow (children 1)
       ExpressionList (children 2)
        Function pow (children 1)
         ExpressionList (children 2)
          Literal NULL
          Literal NULL
        Literal NULL
      Literal NULL
    Function equals (children 1)
     ExpressionList (children 2)
      Function plus (children 1)
       ExpressionList (children 2)
        Identifier val
        Literal NULL
      Function multiply (children 1)
       ExpressionList (children 2)
        Identifier rval
        Literal UInt64_0
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias s1) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 2)
           Function equals (children 1)
            ExpressionList (children 2)
             Function plus (children 1)
              ExpressionList (children 2)
               Identifier val
               Literal UInt64_256
             Function multiply (children 1)
              ExpressionList (children 2)
               Literal NULL
               Literal NULL
           Function toLowCardinality (alias val) (children 1)
            ExpressionList (children 1)
             Function toNullable (children 1)
              ExpressionList (children 1)
               Identifier dummy
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.one
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (alias s2) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Function toLowCardinality (alias rval) (children 1)
            ExpressionList (children 1)
             Identifier dummy
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.one
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Function plus (children 1)
         ExpressionList (children 2)
          Identifier val
          Literal UInt64_0
        Function multiply (children 1)
         ExpressionList (children 2)
          Identifier rval
          Literal UInt64_255
   Set
