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
SELECT assignments.assignment_name,
assignments.region,
ROUND(SUM(donations.amount),2) AS rounded_total_donation_amount,
donors.donor_type
FROM assignments
LEFT JOIN donations ON assignments.assignment_id = donations.assignment_id
LEFT JOIN donors ON donations.donor_id = donors.donor_id
WHERE donors.donor_type IS NOT NULL
GROUP BY assignment_name, region, donor_type
ORDER BY rounded_total_donation_amount DESC
LIMIT 5
-- top_regional_impact_assignments\
WITH donation_count AS
(SELECT assignments.assignment_id,
COUNT(amount) AS total
FROM donations
LEFT JOIN assignments USING(assignment_id)
WHERE amount >= 1
GROUP BY assignments.assignment_id
),
ranked_scores AS (SELECT
assignments.assignment_name,
assignments.region,
assignments.impact_score,
donation_count.total AS total,
ROW_NUMBER() OVER(PARTITION BY region ORDER BY impact_score DESC) AS regional_rank
FROM assignments
INNER JOIN donation_count ON assignments.assignment_id = donation_count.assignment_id
ORDER BY impact_score DESC, region DESC)
SELECT
assignment_name,
region,
impact_score,
total AS num_total_donations
FROM ranked_scores
WHERE ranked_scores.regional_rank = 1
GROUP BY assignment_name, region, impact_score, total
ORDER BY region