SQL - Aggregate Functions
Which SQL clause is used to group rows before applying multiple aggregate functions?
Which SQL clause is used to group rows before applying multiple aggregate functions?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify grouping purpose
GROUP BY groups rows so aggregates apply per group, not entire table.Step 2: Differentiate from other clauses
ORDER BY sorts, WHERE filters rows, HAVING filters groups after aggregation.Final Answer:
GROUP BY -> Option CQuick Check:
Grouping aggregates = GROUP BY [OK]
Quick Trick: Use GROUP BY to group rows for aggregates [OK]
Common Mistakes:
MISTAKES- Using ORDER BY to group data
- Confusing WHERE with grouping
- Using HAVING before aggregation
Master "Aggregate Functions" in SQL
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