GoodThought NGO has been a catalyst for positive change, focusing its efforts on education, healthcare, and sustainable development to make a significant difference in communities worldwide. With this mission, GoodThought has orchestrated an array of assignments aimed at uplifting underprivileged populations and fostering long-term growth.
This project offers a hands-on opportunity to explore how data-driven insights can direct and enhance these humanitarian efforts. In this project, you'll engage with the GoodThought PostgreSQL database, which encapsulates detailed records of assignments, funding, impacts, and donor activities from 2010 to 2023. This comprehensive dataset includes:
Assignments: Details about each project, including its name, duration (start and end dates), budget, geographical region, and the impact score.Donations: Records of financial contributions, linked to specific donors and assignments, highlighting how financial support is allocated and utilized.Donors: Information on individuals and organizations that fund GoodThought’s projects, including donor types.
Refer to the below ERD diagram for a visual representation of the relationships between these data tables:
You will execute SQL queries to answer two questions, as listed in the instructions. Good luck!
-- highest_donation_assignments
WITH summarize_donations AS (
SELECT a.assignment_name, a.region, SUM(d.amount) AS rounded_total_donation_amount, d1.donor_type
FROM donations AS d
INNER JOIN assignments AS a
USING(assignment_id)
INNER JOIN donors AS d1
USING(donor_id)
GROUP BY 1, 2, 4
)
SELECT *
FROM summarize_donations
ORDER BY rounded_total_donation_amount DESC
LIMIT 5
-- top_regional_impact_assignments
WITH totals AS (
SELECT a.assignment_id, COUNT(*) AS num_total_donations
FROM donations
INNER JOIN assignments AS a
USING(assignment_id)
GROUP BY 1
),
ranking AS (
SELECT
a.assignment_name,
a.region,
a.impact_score,
t.num_total_donations,
ROW_NUMBER() OVER(PARTITION BY a.region ORDER BY a.impact_score DESC) AS ranking_over_region
FROM assignments AS a
INNER JOIN totals AS t
ON a.assignment_id = t.assignment_id
WHERE t.num_total_donations > 0
)
SELECT
assignment_name,
region,
impact_score,
num_total_donations
FROM ranking AS r
WHERE ranking_over_region = 1
ORDER BY region