InterSystems IRIS TSQL Code 4421 Derived table ‘%.*ls’ is not updatable b

In this post, you’ll learn about the SQL error code 4421 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

4421

Reason for the Error code 4421 in InterSystems IRIS DBMS

Derived table ‘%.*ls’ is not updatable because a column of the derived table is derived or constant.