Sql Server Query Performance Tuning, 4th Edition May 2026

"CXPACKET," she muttered, seeing the results of her diagnostic query. "Parallelism overhead."

The CPU line on the monitor, which had been a flat ceiling at 99%, plummeted to a cool 12%. The report that had timed out after ten minutes now populated in four seconds. SQL Server Query Performance Tuning, 4th Edition

Following the 4th Edition’s guidance on , she didn't just add a "missing index" suggested by the engine. Instead, she crafted a Filtered Index —a precision tool the book championed for massive tables. She hit Execute . "CXPACKET," she muttered, seeing the results of her