SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayEnumerateDense (children 1)
     ExpressionList (children 2)
      Function array (children 1)
       ExpressionList (children 1)
        Function STDDEV_SAMP (children 1)
         ExpressionList (children 2)
          Literal NULL
          Literal Float64_910947.571364
      Literal Array_[NULL]