### Q1: What is the purpose of using an INNER JOIN in SQL?
### Q2: How can a LEFT JOIN be beneficial when analyzing customer data?
### Q3: What complexities might arise when using a FULL JOIN, and how can they be addressed?

### Q4: In which business situations would you find the SUM aggregation function most useful?
### Q5: How can using the AVG function enhance your understanding of customer purchasing patterns?
### Q6: Describe a scenario where combining JOIN operations with aggregation functions could yield important business insights.

### Q7: How can you effectively explain JOIN operations to a team member who is new to SQL?
### Q8: What strategies would you employ to communicate the results of your data analysis to non-technical stakeholders?
### Q9: How can developing strong communication skills improve your ability to present complex SQL queries and their implications?