Here are some SQL functions and techniques every data professional should know: COUNT (DISTINCT col) – Count unique values COALESCE (col, 0) – Replace NULL values with defaults NULLIF (col, 0) – ...

-- Q1: Find employees working >25 hours and whose last name contains 's'.

This Issue, we delve into the transformative power of Artificial Intelligence in SQL Server health reporting. Traditional monitoring often relies on static thresholds and reactive alerts, but AI ...

Select SUM(new_cases) as total_cases, SUM(cast(new_deaths as int)) as total_deaths, SUM(cast(new_deaths as int))/SUM(New_Cases)*100 as DeathPercentage ...