SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function greater (alias a) (children 1)
     ExpressionList (children 2)
      Function max (children 1)
       ExpressionList (children 1)
        Function greater (children 1)
         ExpressionList (children 2)
          Literal NULL
          Literal UInt64_255
      Literal NULL
    Function greater (children 1)
     ExpressionList (children 2)
      Function count (children 1)
       ExpressionList (children 1)
        Function greater (children 1)
         ExpressionList (children 2)
          Literal NULL
          Literal Float64_1
      Literal UInt64_1048577
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10
