NOLOCK double counting is how three people in a lunch line turn into four lunches. Nothing was inserted. One row moved ahead of the scan and got read twice. I tested it on SQL Server 2025 and share a query that catches it on your own table.
NOLOCK Can Miss Rows: The Order That Was Never Missing
Yes, NOLOCK can miss rows. A row can vanish from your report while it sits safely in the table. Nobody deleted it. The read simply walked past it.
UPDATE Without WHERE Clause: The Day Everyone Got a Raise
An UPDATE without WHERE clause changed 8,432 salaries. When ROLLBACK can help, and how to check the affected row count before COMMIT.
ANSI PADDING and Storage – SQL in Sixty Seconds 210
ANSI PADDING is an often-overlooked yet impactful setting in SQL Server that determines how trailing spaces are handled in CHAR and VARCHAR.
SSMS and Execution Timeout – SQL in Sixty Seconds 209
Execution timeout in SSMS are a small but important feature that can help you manage query performance. Let us watch the video together.
Performance and TempDB Spills – SQL in Sixty Seconds 208
Sorting large datasets in SQL Server can significantly impact performance, especially when it leads to tempdb spills.
Deadlock and Profiler – SQL in Sixty Seconds 207
In today’s episode, we’ll explore how to simulate and capture deadlocks in SQL Server using the powerful SQL Server Profiler.