Creating Indexes that Cover a Query
Explore the importance of indexes that cover a query and how they can improve SQL Server performance and eliminate lookups.
SQL Server
Multi‑Column Indexing in SQL Server
Unlock the power of Multi‑Column Indexing in SQL Server to optimize performance and reduce expensive query costs.
Writing SARGable Expressions in T‑SQL
Learn about Writing SARGable Expressions in T‑SQL to maximize SQL Server performance and efficiency with your queries.
Concurrency: Phantom Reads
A closer look at the Serializable Transaction Isolation Level and how it could prevent Phantom Reads concurrency issues in SQL Server.
Concurrency: Inconsistent Analysis
A closer look at the Repeatable Read Transaction Isolation Level and how it could help with Inconsistent Analysis concurrency issues in SQL Server.
Concurrency: Lost Updates
A closer look at the Read Committed Transaction Isolation Level and how it could allow Lost Update concurrency issues in SQL Server.
Concurrency: Dirty Reads
A closer look at the Read Uncommitted Transaction Isolation Level and how it could allow Dirty Reads in SQL Server.
What are Locks?
Explore SQL Server locks for transaction isolation to prevent data inconsistencies and ensure smooth database operations.
Transaction Isolation Levels
Transaction Isolation Levels are used to control data access concurrency. Concurrency controls can be Pessimistic or Optimistic.
What are Transactions?
Understand Transactions in SQL Server and their role in maintaining data integrity and enforcing the ACID properties.