SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function round (children 1)
     ExpressionList (children 2)
      Function abs (children 1)
       ExpressionList (children 1)
        Function minus (children 1)
         ExpressionList (children 2)
          Identifier res1
          Identifier res2
      Literal UInt64_6
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 2)
           Function stddevPop (alias res1) (children 1)
            ExpressionList (children 1)
             Identifier x_value
           Function sqrt (alias res2) (children 1)
            ExpressionList (children 1)
             Function divide (children 1)
              ExpressionList (children 2)
               Function minus (children 1)
                ExpressionList (children 2)
                 Function sum (children 1)
                  ExpressionList (children 1)
                   Function multiply (children 1)
                    ExpressionList (children 2)
                     Identifier x_value
                     Identifier x_value
                 Function divide (children 1)
                  ExpressionList (children 2)
                   Function multiply (children 1)
                    ExpressionList (children 2)
                     Function sum (children 1)
                      ExpressionList (children 1)
                       Identifier x_value
                     Function sum (children 1)
                      ExpressionList (children 1)
                       Identifier x_value
                   Function count (children 1)
                    ExpressionList
               Function count (children 1)
                ExpressionList
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier series