A row can vanish from your report while it is sitting safely in the table the entire time. Nobody deleted it. Nothing rolled back. 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.
TOP vs. TOP PERCENT: Hidden Costs – SQL in Sixty Seconds 206
The hidden costs of using TOP versus TOP PERCENT clauses. Even if the results appear the same, the underlying performance can vary.