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Analytical Vs. Aggregate Functions: What's the Difference? Oracle SQL Tricky Interview Questions

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What is analytical function and where it should be used.
Performance.
Real Queries Covered
1- Average Sal
2- Longest gap in joining date
3 - Rank vs Dense Rank
What is analytical function and where it should be used.
Performance.
Real Queries Covered
1- Average Sal
2- Longest gap in joining date
3 - Rank vs Dense Rank