SQL DBA - hybrid

Responsibilities

:
SQL Server Internals
* Deep understanding of how SQL Server processes queries, manages memory, and handles I/O.
* Familiarity with execution plans, query processor architecture, and storage engine behavior.

Query Optimization
* Ability to analyze and rewrite inefficient queries.
* Expertise in indexing strategies, including clustered, non-clustered, filtered, and columnstore indexes.
* Knowledge of INCLUDE columns and their impact on query performance.

Statistics and Cardinality Estimation
* Understanding how SQL Server uses statistics for query planning.
* Experience with updating, creating, and managing statistics to improve estimator accuracy.

Concurrency and Locking
* Proficiency in diagnosing blocking, deadlocks, and transaction isolation levels.
* Ability to tune workloads for high concurrency without sacrificing performance.
* Experience in dealing with SQL Server Version change issues, particularly query performance.
* Experience in AlwaysON and other replication technologies.