SQL - GROUP BY and HAVING
Which aggregate function is used to find the total sum of values in a column when using GROUP BY?
Which aggregate function is used to find the total sum of values in a column when using GROUP BY?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify aggregate functions
SUM() calculates the total sum of numeric values in a column.Step 2: Differentiate from other aggregates
COUNT() counts rows, AVG() calculates average, MAX() finds maximum value.Final Answer:
SUM() -> Option AQuick Check:
Sum function = SUM() [OK]
Quick Trick: SUM() adds values in a group [OK]
Common Mistakes:
MISTAKES- Using COUNT() instead of SUM() for totals
- Confusing AVG() with SUM()
- Using MAX() to get total sum
Master "GROUP BY and HAVING" in SQL
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