SQL Server Table Hints: Mastering Concurrency And Performance
Table hints in SQL Server control query interaction with data, locks & optimizer. Learn basics, use cases & pitfalls for NOLOCK, UPDLOCK, HOLDLOCK, ROWLOCK & TABLOCK hints. Use sparingly, test thoroughly & monitor deadlocks.
Table hints in SQL Server are powerful tools for controlling how queries interact with data, locks, and the SQL Server query optimizer. This tutorial will guide you through the basics of table hints, their use cases, and how to use them effectively while avoiding common pitfalls. What Are Table Hints? Table hints are directives applied to specific tables in a query. They influence locking behavior, query execution, and concurrency. By using table hints, you can customize SQL Server's default behavior for specific scenarios. Common Table Hints Here are some commonly used table hints, their purp...