SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function less (children 1)
     ExpressionList (children 2)
      Function divide (children 1)
       ExpressionList (children 2)
        Function abs (children 1)
         ExpressionList (children 1)
          Function minus (children 1)
           ExpressionList (children 2)
            Function sum (children 1)
             ExpressionList (children 1)
              Identifier _sample_factor
            Literal UInt64_3000000
        Literal UInt64_3000000
      Literal Float64_0.001
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 2)
      Function merge (children 1)
       ExpressionList (children 2)
        Function currentDatabase (children 1)
         ExpressionList
        Literal \'^sample_00314_\\\\d$\'
      SampleRatio 100000
