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
-- top 5 assignments based total value of donations, cat donor type
-- assignment_name (assignments), region(assignments), rounded_total_donation_amount (donations) (two dec), donor_type (donors)
-- order by rounded_total DESC
WITH rounded_total AS (
SELECT assignment_id, ROUND(SUM(amount),2) AS rounded_total_donation_amount, donor_type
FROM donations
JOIN donors
ON donations.donor_id = donors.donor_id
GROUP BY assignment_id, donor_type
)
SELECT DISTINCT assignment_name,
region,
rounded_total_donation_amount,
donors.donor_type
FROM assignments AS a
JOIN rounded_total AS rt
ON a.assignment_id = rt.assignment_id
JOIN donors
ON rt.donor_type = donors.donor_type
ORDER BY rounded_total_donation_amount DESC
LIMIT 5;
-- top_regional_impact_assignments
-- assignment w/ highest impact score each region, at least one donation
-- assignment_name (assignments), region (assignments), impact_score (assignments), num_total_donations (donations)
-- order by region asc
-- only highest scoring per region, no dupes
WITH total_donations AS (
SELECT COUNT(*) AS num_total_donations, assignment_id
FROM donations
WHERE donation_id IS NOT NULL
GROUP BY assignment_id
),
region_rank AS (
SELECT assignment_id, assignment_name, region, impact_score,
ROW_NUMBER() OVER(PARTITION BY region ORDER BY impact_score DESC) AS score_rank
FROM assignments
)
SELECT assignment_name,
region,
impact_score,
num_total_donations
FROM region_rank AS rr
JOIN total_donations AS td
ON rr.assignment_id = td.assignment_id
WHERE score_rank = 1
ORDER BY region ASC;