SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Function unhex (children 1)
         ExpressionList (children 1)
          Literal \'02010A00000000000000020A00000000000000\'
        Literal \'AggregateFunction(1, sumMapFiltered([1, 2]), Array(UInt8), Array(UInt8))\'
