Add new article

Author: ktaranov

Articles/README.md

@@ -1461,6 +1461,7 @@ Articles types:
 | [Announcing SSIS Framework Manager, v1] | Andy Leonard | 2021-06-09 | [SSIS] |
 | [Improving The Performance of RBAR Modifications] | Erik Darling | 2021-02-15 | [DBA][DEV] |
 | [Minimal Logging with INSERT…SELECT into Empty Clustered Tables] | Paul White | 2019-05-16 | [DBA][DEV] |
+| [What Is a Cost-Based Optimizer?] | Brent Ozar | 2021-09-17 | [DBA][DEV] |
 
 [Understanding how SQL Server executes a query]:http://rusanu.com/2013/08/01/understanding-how-sql-server-executes-a-query/
 [SQL Server Index Design Guide]:https://technet.microsoft.com/en-us/library/jj835095.aspx
@@ -2885,3 +2886,4 @@ Articles types:
 [Announcing SSIS Framework Manager, v1]:https://andyleonard.blog/2021/06/announcing-ssis-framework-manager-v1/
 [Improving The Performance of RBAR Modifications]:https://www.erikdarlingdata.com/sql-server/improving-the-performance-of-rbar-modifications/
 [Minimal Logging with INSERT…SELECT into Empty Clustered Tables]:https://sqlperformance.com/2019/05/sql-performance/minimal-logging-empty-clustered
+[What Is a Cost-Based Optimizer?]:https://www.brentozar.com/archive/2021/09/what-is-a-cost-based-optimizer/