[Solved] Given the table orders with column customer_id, what will this query return?SELECT customer_id FROM orders GROUP BY customer_id HAVING COUNT(*) > 2; | SQL

SQL - Advanced Query Patterns

Given the table orders with column customer_id, what will this query return?

SELECT customer_id FROM orders GROUP BY customer_id HAVING COUNT(*) > 2;

AAll customer IDs with exactly 2 orders

BAll customer IDs regardless of order count

CAll customer IDs with less than 2 orders

DAll customer IDs with more than 2 orders

Step-by-Step Solution

Solution:

Step 1: Understand HAVING COUNT(*) > 2 condition
This filters groups where the count of rows is greater than 2.
Step 2: Apply to customer_id groups
Only customer IDs with more than 2 orders appear in the result.
Final Answer:
All customer IDs with more than 2 orders -> Option D
Quick Check:
HAVING COUNT(*) > 2 means count > 2 [OK]

Quick Trick: HAVING COUNT(*) > N finds groups with more than N rows [OK]

Common Mistakes:

Master "Advanced Query Patterns" in SQL

9 interactive learning modes - each teaches the same concept differently

More SQL Quizzes

Given the table orders with column customer_id, what will this query return?