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monzchan
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Aug 12, 2025
| HINT: This query requires you to join two tables, use an aggregate function, and use the HAVING keyword. */ | ||
| select customer_first_name,customer_last_name, sum(quantity*cost_to_customer_per_qty) | ||
| from customer a inner join customer_purchases b on a.customer_id = b.customer_id | ||
| group by customer_first_name,customer_last_name |
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Consider grouping by customer_id as well as first and last names to uniquely identify customers.
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monzchan
approved these changes
Aug 13, 2025
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What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)
Submitting assignment one, assignment1.sql and the ERD
What did you learn from the changes you have made?
How to create ERD and use relations for existing tables. Also writing some SQL queries for the questions
Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?
No
Were there any challenges? If so, what issue(s) did you face? How did you overcome it?
in creating ERD just adding new fields and items was challenge for me
How were these changes tested?
for SQL queries I ran them in SQLLte and checked the result to see if it covers the questions
A reference to a related issue in your repository (if applicable)
there is no issue on my repository
Checklist