SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayReduce (children 1)
     ExpressionList (children 2)
      Literal \'maxOrNull\'
      Function arrayPopBack (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList (children 1)
          Function toDecimal128 (children 1)
           ExpressionList (children 2)
            Literal Float64_-123.45
            Literal UInt64_2