SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function divide (children 1)
     ExpressionList (children 2)
      Function sum (children 1)
       ExpressionList (children 1)
        Function less (children 1)
         ExpressionList (children 2)
          Function abs (children 1)
           ExpressionList (children 1)
            Function minus (children 1)
             ExpressionList (children 2)
              Function pow (children 1)
               ExpressionList (children 2)
                Identifier x
                Literal UInt64_1
              Identifier x
          Literal Float64_1e-9
      Function count (children 1)
       ExpressionList
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.one
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 1)
       Function range (alias x) (children 1)
        ExpressionList (children 1)
         Literal UInt64_1000000