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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!

Spinner
DataFrameas
highest_donation_assignments
variable
-- highest_donation_assignments
--SELECT *
--FROM assignments --(ass id, ass name, strt date,end date,budget,region, ----impact score)

--SELECT *
--FROM donations --(dont id, donor id, amt, dont date, ass id )

--SELECT *
--FROM donors  --(donor id, donor name, donor type)

/*SELECT *
FROM donations
WHERE donation_id IS NULL */



SELECT 
     ass.assignment_name,
	 ass.region,
	 ROUND(SUM(dnt.amount),2)  AS rounded_total_donation_amount,
	 dnr.donor_type
FROM assignments ass
JOIN donations dnt
ON ass.assignment_id = dnt.assignment_id
JOIN donors dnr 
ON dnt.donor_id  = dnr.donor_id
GROUP BY dnr.donor_type, ass.region, ass.assignment_name
ORDER BY rounded_total_donation_amount DESC
LIMIT 5
Spinner
DataFrameas
top_regional_impact_assignments
variable
-- top_regional_impact_assignments

--SELECT *
--FROM assignments --(ass id, ass name, strt date,end date,budget,region, ----impact score)

--SELECT *
--FROM donations --(dont id, donor id, amt, dont date, ass id )

WITH total_number_of_donations_per_assignment AS (
     SELECT 
       assignment_id,
       COUNT(donation_id) AS num_total_donations
     FROM donations
     GROUP BY 1 
 ),

   ranking_assignments AS (
     SELECT 
        ass.assignment_name,
        ass.region,
        ass.impact_score,
        tnd.num_total_donations,
        ROW_NUMBER() OVER (PARTITION BY ass.region ORDER by ass.impact_score DESC) as rank_in_region
    FROM assignments ass
    JOIN total_number_of_donations_per_assignment tnd
    ON ass.assignment_id = tnd.assignment_id
    WHERE tnd.num_total_donations > 0
)
SELECT  
    assignment_name,
    region,
    impact_score,
    num_total_donations
FROM ranking_assignments
WHERE rank_in_region = 1
ORDER BY region ASC;