SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function accurateCastOrDefault (children 1)
     ExpressionList (children 2)
      Literal UInt64_128
      Literal \'Int8\'
    Function accurateCastOrDefault (children 1)
     ExpressionList (children 3)
      Literal UInt64_128
      Literal \'Int8\'
      Function toInt8 (children 1)
       ExpressionList (children 1)
        Literal UInt64_5
