InterSystems IRIS TSQL Code 4420 Derived table ‘%.*ls’ is not updatable b

In this post, you’ll learn about the SQL error code 4420 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

4420

Reason for the Error code 4420 in InterSystems IRIS DBMS

Derived table ‘%.*ls’ is not updatable because the modification affects multiple base tables.

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