You use Microsoft SQL Server Profile to evaluate a query named Query1. The Profiler report indicates the following issues:
-At each level of the query plan, a low total number of rows are processed.
-The query uses many operations. This results in a high overall cost for the query.
You need to identify the information that will be useful for the optimizer What should you do?
A. Start a SQL Server Profiler trace for the event class Auto Stats in the Performance event category
B. Create one Extended Events session with the sqlserver.missing_column_statistics event added.
C. Start a SQL Server Profiler trace for the event class Soft Warnings in the Errors and Warnings event category.
D. Create one Extended Events session with the sqlserver.missing join_predicate event added.
B.
https://docs.microsoft.com/en-us/sql/relational-databases/event-classes/missing-column-statistics-event-class?view=sql-server-ver15