This ISNUMERIC puzzle asks why one statement returns 0 and a look-alike returns 1. The answer is a tab character. This post tests it on SQL Server 2025, lists the 27 single-byte characters that ISNUMERIC accepts and shows safer checks before a cast.
Choosing a Database IDE
Choosing a database IDE means testing SQL editing, plans, schema work, security, and team workflow across SSMS, VS Code, and other tools.
SQL SERVER – How to Flip Value of Bit Field in SQL Server? – Part 2
Five expressions flip a bit value in SQL Server without a CASE statement. This post runs Vinod Kumar’s four methods and the readers’ answers on SQL Server 2025, shows what each one returns for 0, 1 and NULL, and explains how to flip value of bit field data stored in an integer column.
SQL SERVER – Beginning Reading Transaction Log File
What is the SQL Server transaction log, why do we need it and how does it work? A beginner’s first step toward reading transaction log file content.
Getting the Most From a Conference
Get the most from a conference by planning sessions, meeting people with useful questions, and turning notes into tested action.
Extended Security Updates Explained
Extended Security Updates give eligible older SQL Server releases limited critical security coverage while you complete a migration.
Finding Hot Tables With sys.dm_db_index_usage_stats
Identify hot tables with index usage, lock and latch counters, table sizes, and retained snapshots that describe a real workload interval.