[Solved] What is the main purpose of using GROUP BY with a single column in SQL? — Ans: To organize rows into groups based on unique values in that column | SQL

SQL - GROUP BY and HAVING

What is the main purpose of using GROUP BY with a single column in SQL?

ATo sort the rows in ascending order by that column

BTo organize rows into groups based on unique values in that column

CTo delete duplicate rows based on that column

DTo join two tables using that column

Step-by-Step Solution

Solution:

Step 1: Understand the role of GROUP BY
The GROUP BY clause groups rows that have the same values in specified columns into summary rows.
Step 2: Apply to single column grouping
When used with a single column, it groups all rows sharing the same value in that column together.
Final Answer:
To organize rows into groups based on unique values in that column -> Option B
Quick Check:
GROUP BY single column = Organize rows by unique values [OK]

Quick Trick: GROUP BY groups rows by unique column values [OK]

Common Mistakes:

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What is the main purpose of using GROUP BY with a single column in SQL?