InterSystems IRIS TSQL Code 8666 Warning: The optimizer cannot use the in

In this post, you’ll learn about the SQL error code 8666 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

8666

Reason for the Error code 8666 in InterSystems IRIS DBMS

Warning: The optimizer cannot use the index because the select list of the view contains a non-aggregate expression.

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