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Day 35/100: SQL with our latest reel on the AVG() function!
Learn about its syntax, applications, and best practices to enhance your data analysis. Don't miss out on mastering one of SQL's most useful functions!

Most Asked Q&A

1. *What is the AVG() function in SQL?*
The AVG() function calculates the average value of a numeric column in a database table.

2. *How do I use the AVG() function with GROUP BY?*
You can use AVG() with GROUP BY to calculate the average for different groups. Example: `SELECT department, AVG(salary) FROM employees GROUP BY department;`

3. *Can AVG() be used with NULL values?*
Yes, AVG() ignores NULL values when calculating the average, which means it only considers non-null entries.

4. *What is the difference between AVG() and SUM()?*
AVG() calculates the average of a set of values, while SUM() totals all values. You can use both to analyze data effectively.

5. *How can I apply AVG() in a WHERE clause?*
You cannot directly use AVG() in a WHERE clause. Instead, you would typically use a HAVING clause after a GROUP BY statement to filter aggregated results.

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