SQL - Window Functions Fundamentals
Which function would you use if you want to assign ranks without gaps even when there are ties?
Which function would you use if you want to assign ranks without gaps even when there are ties?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify function behavior for gaps in ranks
RANK() creates gaps after ties, so it is not suitable.Step 2: Identify function that assigns ranks without gaps
DENSE_RANK() assigns ranks consecutively without gaps even if there are ties.Final Answer:
DENSE_RANK() -> Option AQuick Check:
No gaps in ranks = A [OK]
Quick Trick: Use DENSE_RANK for consecutive ranks without gaps [OK]
Common Mistakes:
- Choosing RANK() expecting no gaps
- Confusing ROW_NUMBER() with ranking functions
- Using COUNT() which is unrelated
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