How to reduce # of rows read from CallActivity

MichaelK 2017-02-16 16:54:38

I am trying to understand why the plan is reading ALL the rows in CallActivity to statisfy this query. Is there a way of improving this. This is my first time submitting a query. If I am not providing enough info, pls let me know. Thanks.

Aaron Bertrand 2017-02-17 23:09:28
Can call_activity_id really be null?