⚠️ SQL Server Trap: When NULL Looks Like ‘N’ Today I ran into a classic T-SQL gotcha that can seriously mislead you during debugging. Consider this code: DECLARE @Initial CHAR(1); DECLARE ...

🔍 SQL Differences Part-7: ISNULL vs COALESCE Both handle *NULL values*, but they work differently behind the scenes: 1️⃣ ISNULL() • Returns the *first non-null* value • Takes only *2 arguments* • ...