SQL - Advanced Query Patterns
Which SQL function is commonly used with CASE statements for conditional aggregation?
Which SQL function is commonly used with CASE statements for conditional aggregation?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify aggregation functions
Functions like SUM, COUNT, AVG are used to aggregate data.Step 2: Match with conditional logic
CASE statements inside SUM allow summing only rows meeting conditions.Final Answer:
SUM -> Option CQuick Check:
SUM with CASE = conditional aggregation [OK]
Quick Trick: Use SUM with CASE for conditional sums [OK]
Common Mistakes:
- Using JOIN or UPDATE which are not aggregation functions
- Confusing DELETE with aggregation
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