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What are the names and ranks of the highest-ranking personnel in each service?
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CREATE TABLE MilitaryPersonnel (id INT,name VARCHAR(100),rank VARCHAR(50),service VARCHAR(50)); INSERT INTO MilitaryPersonnel (id,name,rank,service) VALUES (1,'John Doe','Colonel','Air Force'); INSERT INTO MilitaryPersonnel (id,name,rank,service) VALUES (2,'Jane Smith','Captain','Navy'); INSERT INTO MilitaryPersonnel (id,name,rank,service) VALUES (3,'Robert Johnson','General','Army'); INSERT INTO MilitaryPersonnel (id,name,rank,service) VALUES (4,'Emily Davis','Lieutenant General','Marines');
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SELECT name, rank, service FROM MilitaryPersonnel WHERE rank IN (SELECT MAX(rank) FROM MilitaryPersonnel GROUP BY service);
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Calculate the percentage of cargo weight that is container cargo for each flag state.
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CREATE TABLE FLAG_STATE_CARGO (ID INT,FLAG_STATE_ID INT,CARGO_TYPE VARCHAR(50),WEIGHT INT); INSERT INTO FLAG_STATE_CARGO VALUES (1,1,'Container',1000000); INSERT INTO FLAG_STATE_CARGO VALUES (2,2,'Bulk',5000000);
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SELECT F.NAME AS FLAG_STATE, ROUND(100.0 * SUM(CASE WHEN FSC.CARGO_TYPE = 'Container' THEN FSC.WEIGHT ELSE 0 END) / SUM(FSC.WEIGHT), 2) AS PERCENTAGE FROM FLAG_STATE_CARGO FSC JOIN FLAG_STATES F ON FSC.FLAG_STATE_ID = F.ID GROUP BY F.ID, F.NAME
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What is the average playtime for female players in RPG games?
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CREATE TABLE PlayerInfo (PlayerID INT,Gender VARCHAR(50),GameType VARCHAR(50)); INSERT INTO PlayerInfo (PlayerID,Gender,GameType) VALUES (1,'Female','RPG'),(2,'Male','FPS'),(3,'Female','RPG'),(4,'Non-binary','Simulation'); CREATE TABLE PlayerActivity (PlayerID INT,GameID INT,Playtime FLOAT); INSERT INTO PlayerActivity (PlayerID,GameID,Playtime) VALUES (1,1,50.5),(2,2,60.2),(3,1,75.1),(4,3,80.5);
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SELECT AVG(Playtime) as AvgPlaytime FROM PlayerActivity INNER JOIN PlayerInfo ON PlayerActivity.PlayerID = PlayerInfo.PlayerID WHERE Gender = 'Female' AND GameType = 'RPG';
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Update the city of an exhibition
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CREATE TABLE exhibitions (exhibition_id INT PRIMARY KEY,exhibition_name VARCHAR(255),city VARCHAR(255),country VARCHAR(255));
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UPDATE exhibitions SET city = 'New York' WHERE exhibition_id = 123;
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List all clients who have not paid any billing amount?
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CREATE TABLE clients (client_id INT,name VARCHAR(50)); CREATE TABLE cases (case_id INT,client_id INT,billing_amount DECIMAL(10,2)); INSERT INTO clients (client_id,name) VALUES (1,'Smith'),(2,'Johnson'),(3,'Williams'),(4,'Brown'); INSERT INTO cases (case_id,client_id,billing_amount) VALUES (1,1,3000.00),(2,NULL,6000.00),(3,3,7000.00),(4,4,NULL);
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SELECT clients.name FROM clients LEFT JOIN cases ON clients.client_id = cases.client_id WHERE cases.client_id IS NULL;
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What's the total funding spent on climate communication campaigns by each continent?
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CREATE TABLE climate_communication_campaigns(campaign_id INT,campaign_name TEXT,location TEXT,amount_funded FLOAT);
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SELECT CONCAT(SUBSTRING(location, 1, 2), ': ', SUM(amount_funded)) FROM climate_communication_campaigns WHERE sector = 'climate communication' GROUP BY SUBSTRING(location, 1, 2);
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What is the total number of volunteers and total volunteer hours for each country, sorted by the total number of volunteers in descending order?
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CREATE TABLE Volunteers (VolunteerID INT,VolunteerName TEXT,Country TEXT); CREATE TABLE VolunteerHours (VolunteerID INT,Hours INT);
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SELECT V.Country, COUNT(V.VolunteerID) as TotalVolunteers, SUM(VH.Hours) as TotalHours FROM Volunteers V JOIN VolunteerHours VH ON V.VolunteerID = VH.VolunteerID GROUP BY V.Country ORDER BY TotalVolunteers DESC;
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List all movies and TV shows with a runtime greater than the average movie runtime.
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CREATE TABLE Movies (id INT,title VARCHAR(255),runtime INT); CREATE TABLE TVShows (id INT,title VARCHAR(255),runtime INT);
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SELECT Movies.title UNION SELECT TVShows.title FROM Movies, TVShows WHERE Movies.runtime > (SELECT AVG(runtime) FROM Movies) OR TVShows.runtime > (SELECT AVG(runtime) FROM Movies);
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What is the total capacity of all cargo ships owned by Acme Corp?
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CREATE TABLE ships (id INT,name VARCHAR(255),capacity INT); INSERT INTO ships (id,name,capacity) VALUES (1,'ship1',5000),(2,'ship2',7000);
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SELECT SUM(capacity) FROM ships WHERE name LIKE 'Acme%';
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List all autonomous buses and their quantities in the public_transportation table.
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CREATE TABLE public_transportation (id INT,vehicle_type VARCHAR(20),quantity INT); INSERT INTO public_transportation (id,vehicle_type,quantity) VALUES (1,'autonomous_bus',200),(2,'manual_bus',800),(3,'tram',1000);
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SELECT vehicle_type, quantity FROM public_transportation WHERE vehicle_type = 'autonomous_bus';
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Insert new records into the community_engagement table with the following data: (1, 'Bangkok', 'Thai', 'workshops', 150, '2022-09-10') and (2, 'Delhi', 'Hindi', 'festivals', 200, '2022-11-15').
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community_engagement (id,city,language,event_type,participants,event_date)
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INSERT INTO community_engagement (id, city, language, event_type, participants, event_date) VALUES (1, 'Bangkok', 'Thai', 'workshops', 150, '2022-09-10'), (2, 'Delhi', 'Hindi', 'festivals', 200, '2022-11-15');
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What is the minimum donation amount and the number of donors who made donations equal to the minimum amount?
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CREATE TABLE Donors (DonorID INT,DonorName TEXT,DonationAmount DECIMAL(10,2)); INSERT INTO Donors (DonorID,DonorName,DonationAmount) VALUES (1,'John Doe',50.00); INSERT INTO Donors (DonorID,DonorName,DonationAmount) VALUES (2,'Jane Smith',100.00); INSERT INTO Donors (DonorID,DonorName,DonationAmount) VALUES (3,'Bob Johnson',50.00);
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SELECT MIN(DonationAmount), COUNT(*) FROM Donors GROUP BY DonationAmount HAVING DonationAmount = (SELECT MIN(DonationAmount) FROM Donors);
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What is the maximum package weight sent from each warehouse?
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CREATE TABLE warehouse (id INT,location VARCHAR(255)); INSERT INTO warehouse (id,location) VALUES (1,'Chicago'),(2,'Houston'); CREATE TABLE packages (id INT,warehouse_id INT,weight FLOAT); INSERT INTO packages (id,warehouse_id,weight) VALUES (1,1,50.3),(2,1,30.1),(3,2,70.0),(4,2,100.0);
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SELECT warehouse_id, MAX(weight) as max_weight FROM packages GROUP BY warehouse_id;
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How many electric vehicles were sold in California in 2022?
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CREATE TABLE electric_vehicles (id INT,year INT,state VARCHAR(255),sales INT); INSERT INTO electric_vehicles (id,year,state,sales) VALUES (1,2020,'California',50000),(2,2021,'California',60000),(4,2022,'California',80000),(5,2022,'Texas',90000);
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SELECT SUM(sales) FROM electric_vehicles WHERE state = 'California' AND year = 2022;
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What is the total budget for all resilience projects in the infrastructure development database?
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CREATE TABLE if not exists Projects (id INT,name VARCHAR(50),type VARCHAR(50),budget DECIMAL(10,2)); INSERT INTO Projects (id,name,type,budget) VALUES (1,'Seawall','Resilience',5000000.00),(2,'Floodgate','Resilience',3000000.00),(3,'Bridge','Transportation',8000000.00);
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SELECT SUM(budget) FROM Projects WHERE type = 'Resilience';
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What is the total number of heritage sites per region?
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CREATE TABLE Regions (RegionID INT,RegionName VARCHAR(50)); CREATE TABLE HeritageSites (SiteID INT,SiteName VARCHAR(50),RegionID INT); INSERT INTO Regions VALUES (1,'RegionA'),(2,'RegionB'),(3,'RegionC'); INSERT INTO HeritageSites VALUES (1,'SiteA',1),(2,'SiteB',1),(3,'SiteC',2),(4,'SiteD',3),(5,'SiteE',3);
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SELECT R.RegionName, COUNT(HS.SiteID) AS TotalSites FROM Regions R JOIN HeritageSites HS ON R.RegionID = HS.RegionID GROUP BY R.RegionName;
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How many components were launched by each supplier in the first half of 2020?
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CREATE TABLE SatelliteComponents (ComponentID INT,ComponentName VARCHAR(20),Supplier VARCHAR(20),ComponentType VARCHAR(20),LaunchDate DATE); INSERT INTO SatelliteComponents (ComponentID,ComponentName,Supplier,ComponentType,LaunchDate) VALUES (1,'Star Tracker','Honeywell','Attitude Control','2018-04-01'); INSERT INTO SatelliteComponents (ComponentID,ComponentName,Supplier,ComponentType,LaunchDate) VALUES (2,'S-Band Transponder','EMS Technologies','Communication','2019-07-15'); INSERT INTO SatelliteComponents (ComponentID,ComponentName,Supplier,ComponentType,LaunchDate) VALUES (3,'Xenon Ion Propulsion System','Busek','Propulsion','2021-02-09'); INSERT INTO SatelliteComponents (ComponentID,ComponentName,Supplier,ComponentType,LaunchDate) VALUES (4,'Solar Array','Solar Space Technologies','Power','2020-06-05');
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SELECT Supplier, COUNT(*) FROM SatelliteComponents WHERE LaunchDate BETWEEN '2020-01-01' AND '2020-06-30' GROUP BY Supplier;
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What is the average age of policyholders with health insurance policies in California?
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CREATE TABLE policyholders (id INT,state VARCHAR(2),policy_type VARCHAR(20),age INT); INSERT INTO policyholders (id,state,policy_type,age) VALUES (1,'CA','Life',35),(2,'CA','Health',45),(3,'CA','Health',55);
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SELECT AVG(age) FROM policyholders WHERE state = 'CA' AND policy_type = 'Health';
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What is the average budget allocation per department in the Education sector, ordered from highest to lowest?
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CREATE TABLE Education_Budget(Department VARCHAR(255),Allocation INT); INSERT INTO Education_Budget VALUES ('Primary Education',5000000),('Secondary Education',7000000),('Higher Education',9000000);
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SELECT Department, AVG(Allocation) as Avg_Allocation FROM Education_Budget GROUP BY Department ORDER BY Avg_Allocation DESC;
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What is the average price per gram of all cannabis products sold in Denver in 2021?
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CREATE TABLE sales (id INT,product TEXT,price_per_gram DECIMAL,city TEXT,sale_date DATE); INSERT INTO sales (id,product,price_per_gram,city,sale_date) VALUES (1,'Blue Dream',10.0,'Denver','2021-01-01'),(2,'Gelato',15.0,'Denver','2021-01-01');
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SELECT AVG(price_per_gram) FROM sales WHERE city = 'Denver' AND sale_date >= '2021-01-01' AND sale_date < '2022-01-01';
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What is the minimum market price of Lanthanum in Vietnam for 2018?
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CREATE TABLE Lanthanum_Market_Prices (id INT,year INT,country VARCHAR(255),market_price FLOAT);
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SELECT MIN(market_price) FROM Lanthanum_Market_Prices WHERE year = 2018 AND country = 'Vietnam';
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What is the most common age group for mental health conditions in Japan?
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CREATE TABLE mental_health_conditions (id INT PRIMARY KEY,patient_id INT,age_group VARCHAR(50),country VARCHAR(50),condition VARCHAR(50));
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SELECT age_group FROM mental_health_conditions WHERE country = 'Japan' GROUP BY age_group ORDER BY COUNT(*) DESC LIMIT 1;
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What is the total amount of grants awarded to non-profit organizations working on criminal justice reform in New York in the last 3 years?
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CREATE TABLE grants (id INT,year INT,organization VARCHAR(50),state VARCHAR(50),type VARCHAR(50)); INSERT INTO grants (id,year,organization,state,type) VALUES (1,2019,'JusticeReformNY','New York','Grant'),(2,2020,'LegalAidNY','California','Grant'),(3,2021,'EmpowerJustice','New York','Donation'),(4,2018,'JusticeForAll','Texas','Grant'),(5,2019,'CriminalJusticeUSA','New York','Grant');
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SELECT SUM(amount) FROM (SELECT id, year, CASE WHEN type = 'Grant' THEN amount END AS amount FROM grants WHERE state = 'New York' AND type = 'Grant' AND year BETWEEN 2019 AND 2021) AS subquery;
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What is the average number of workplace safety incidents for each union in the education industry, grouped by union name?
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CREATE TABLE union_education (union_id INT,union_name TEXT,industry TEXT,incidents INT); INSERT INTO union_education (union_id,union_name,industry,incidents) VALUES (1,'Union X','Education',20),(2,'Union Y','Education',15),(3,'Union Z','Healthcare',10);
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SELECT union_name, AVG(incidents) FROM union_education WHERE industry = 'Education' GROUP BY union_name;
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What's the percentage of total donations received each month?
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CREATE TABLE MonthlyDonations (Id INT,DonationDate DATE,Amount DECIMAL(10,2)); INSERT INTO MonthlyDonations VALUES (1,'2022-01-01',100.00),(2,'2022-02-01',200.00);
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SELECT EXTRACT(MONTH FROM DonationDate) as Month, SUM(Amount) as TotalDonations, (SUM(Amount) / (SELECT SUM(Amount) FROM MonthlyDonations) * 100) as Percentage FROM MonthlyDonations GROUP BY Month;
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List all disaster types and their respective average preparedness scores, for the last 3 months, from 'DisasterPreparedness' table.
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CREATE TABLE DisasterPreparedness (id INT,month INT,year INT,disasterType VARCHAR(30),score INT);
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SELECT disasterType, AVG(score) FROM DisasterPreparedness WHERE year = YEAR(CURRENT_DATE) AND month BETWEEN MONTH(CURRENT_DATE) - 2 AND MONTH(CURRENT_DATE) GROUP BY disasterType;
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What is the minimum GPA of graduate students in the 'math' program?
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CREATE TABLE student (id INT,program TEXT,gpa REAL); INSERT INTO student (id,program,gpa) VALUES (1,'math',3.8),(2,'math',3.9),(3,'math',4.0);
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SELECT MIN(gpa) FROM student WHERE program = 'math';
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What is the total sales amount for a specific drug across different regions in a given year?
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CREATE TABLE sales_data (drug_name TEXT,sale_amount INTEGER,sale_year INTEGER,region TEXT); INSERT INTO sales_data (drug_name,sale_amount,sale_year,region) VALUES ('DrugC',1200,2020,'North'),('DrugC',1500,2020,'South'),('DrugD',2000,2020,'East'),('DrugD',1800,2020,'West');
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SELECT SUM(sale_amount) FROM sales_data WHERE drug_name = 'DrugC' AND sale_year = 2020;
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How many veterans found employment in the defense industry in 2019?
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CREATE TABLE veteran_employment (employee_id INT,industry VARCHAR(255),date DATE); INSERT INTO veteran_employment (employee_id,industry,date) VALUES (1,'defense','2019-09-01'); INSERT INTO veteran_employment (employee_id,industry,date) VALUES (2,'non-defense','2019-12-05');
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SELECT COUNT(*) FROM veteran_employment WHERE industry = 'defense' AND date BETWEEN '2019-01-01' AND '2019-12-31';
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How many space missions were conducted by 'NASA' in the year 2019?
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CREATE TABLE SpaceExploration(mission VARCHAR(20),mission_year INT,company VARCHAR(20)); INSERT INTO SpaceExploration VALUES('Mission A',2019,'NASA'),('Mission B',2020,'SpaceX');
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SELECT COUNT(*) FROM SpaceExploration WHERE mission_year=2019 AND company='NASA';
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Update the description of the ethic with ethic_id 1 in the 'media_ethics' table
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CREATE TABLE media_ethics (ethic_id INT PRIMARY KEY,ethic_name VARCHAR(255),description TEXT,source VARCHAR(255));
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UPDATE media_ethics SET description = 'The right to access and distribute information without interference from government or other powers.' WHERE ethic_id = 1;
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Find the number of fraudulent transactions and their total value, excluding transactions with a value less than 1000, for each employee in the sales department.
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CREATE TABLE transactions (transaction_id INT,employee_id INT,transaction_type VARCHAR(20),transaction_value DECIMAL(10,2),is_fraudulent BOOLEAN);
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SELECT employee_id, COUNT(*) as fraud_count, SUM(transaction_value) as total_fraud_value FROM transactions WHERE transaction_type = 'Sales' AND is_fraudulent = TRUE AND transaction_value >= 1000 GROUP BY employee_id;
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What is the average cost of group therapy sessions in France?
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CREATE TABLE therapy_sessions (id INT,session_name TEXT,cost INT,country TEXT);
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SELECT AVG(cost) FROM therapy_sessions WHERE session_name = 'Group Therapy' AND country = 'France';
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What is the total CO2 emissions for each year in the diamond mining industry?
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CREATE TABLE environmental_impact (id INT,mine_id INT,year INT,co2_emissions INT,water_usage INT); INSERT INTO environmental_impact (id,mine_id,year,co2_emissions,water_usage) VALUES (7,7,2021,40000,900000); INSERT INTO environmental_impact (id,mine_id,year,co2_emissions,water_usage) VALUES (8,8,2021,45000,1000000);
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SELECT YEAR(e.year) AS year, SUM(e.co2_emissions) AS total_co2_emissions FROM environmental_impact e JOIN mines m ON e.mine_id = m.id WHERE m.mineral = 'Diamond' GROUP BY YEAR(e.year);
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List all the video contents with a diversity score greater than 8.5.
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CREATE TABLE MediaContent (ContentID INT PRIMARY KEY,ContentName VARCHAR(50),ContentType VARCHAR(30),DiversityScore DECIMAL(5,2),MediaPlatform VARCHAR(30)); INSERT INTO MediaContent (ContentID,ContentName,ContentType,DiversityScore,MediaPlatform) VALUES (1,'Content 1','Video',8.5,'Platform A'),(2,'Content 2','Podcast',7.2,'Platform B');
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SELECT * FROM MediaContent WHERE ContentType = 'Video' AND DiversityScore > 8.5;
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Count the number of whale sightings in the Pacific Ocean in 2022.
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CREATE TABLE whale_sightings (id INTEGER,species TEXT,sighting_date DATE,location TEXT); INSERT INTO whale_sightings (id,species,sighting_date,location) VALUES (1,'Blue Whale','2022-01-01','Pacific Ocean'); INSERT INTO whale_sightings (id,species,sighting_date,location) VALUES (2,'Gray Whale','2022-03-15','Pacific Ocean');
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SELECT COUNT(*) FROM whale_sightings WHERE sighting_date >= '2022-01-01' AND sighting_date < '2023-01-01' AND location = 'Pacific Ocean';
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What is the maximum fairness score for models trained on the 'african_census' dataset?
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CREATE TABLE african_census (model_name TEXT,fairness_score FLOAT); INSERT INTO african_census (model_name,fairness_score) VALUES ('model1',0.95),('model2',0.85),('model3',0.90);
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SELECT MAX(fairness_score) FROM african_census;
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What is the total weight of packages shipped to Australia from any country in Oceania in the last month?
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CREATE TABLE package_destinations (id INT,package_weight FLOAT,shipped_from VARCHAR(20),shipped_to VARCHAR(20),shipped_date DATE); INSERT INTO package_destinations (id,package_weight,shipped_from,shipped_to,shipped_date) VALUES (1,2.3,'New Zealand','Australia','2022-01-15');
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SELECT SUM(package_weight) FROM package_destinations WHERE shipped_to = 'Australia' AND shipped_from LIKE 'Oceania%' AND shipped_date >= DATE_SUB(CURRENT_DATE, INTERVAL 1 MONTH);
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What is the average life expectancy in each continent?
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CREATE TABLE life_expectancy(id INT,country TEXT,continent TEXT,expectancy FLOAT);
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SELECT continent, AVG(expectancy) FROM life_expectancy GROUP BY continent;
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What is the maximum impact score achieved by a company in the healthcare sector?
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CREATE TABLE company_impact (id INT,name VARCHAR(50),sector VARCHAR(20),impact_score FLOAT); INSERT INTO company_impact (id,name,sector,impact_score) VALUES (1,'Company X','Healthcare',90.0),(2,'Company Y','Finance',85.0),(3,'Company Z','Healthcare',92.5);
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SELECT MAX(impact_score) FROM company_impact WHERE sector = 'Healthcare';
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How many season tickets have been sold in the Pacific Division?
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CREATE TABLE teams (team_id INT,division VARCHAR(50)); CREATE TABLE ticket_sales (id INT,team_id INT,num_tickets INT);
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SELECT SUM(ticket_sales.num_tickets) FROM ticket_sales JOIN teams ON ticket_sales.team_id = teams.team_id WHERE teams.division = 'Pacific';
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What is the percentage of cases in the access to justice database that were resolved through mediation in the last quarter?
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CREATE TABLE access_to_justice_cases (id INT,resolution_type VARCHAR(20),resolution_date DATE);
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SELECT (COUNT(*) FILTER (WHERE resolution_type = 'mediation')) * 100.0 / COUNT(*) FROM access_to_justice_cases WHERE resolution_date >= DATE_SUB(CURRENT_DATE, INTERVAL 3 MONTHS);
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What is the average mass of different types of space debris?
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CREATE TABLE space_objects (id INT,name VARCHAR(255),mass FLOAT,type VARCHAR(255)); INSERT INTO space_objects (id,name,mass,type) VALUES (1,'Object 1',1000.0,'Rocket Stage'),(2,'Object 2',20.0,'Fractured Debris'),(3,'Object 3',1500.0,'Dead Satellite');
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SELECT type, AVG(mass) FROM space_objects GROUP BY type;
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What's the average rating of music artists from Asia?
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CREATE TABLE MusicArtists (id INT,name VARCHAR(100),country VARCHAR(50),rating FLOAT);
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SELECT AVG(rating) FROM MusicArtists WHERE country = 'Asia';
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Delete all green buildings in the green_buildings table associated with the 'Boston' city
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CREATE TABLE green_buildings (id INT,name TEXT,certification_level TEXT,city TEXT);
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WITH cte AS (DELETE FROM green_buildings WHERE city = 'Boston') SELECT * FROM cte;
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Add a new column endangered to the species table and update values
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CREATE TABLE species(id INT,name VARCHAR(255),common_name VARCHAR(255),population INT,endangered BOOLEAN);
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ALTER TABLE species ADD COLUMN endangered BOOLEAN;
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What is the minimum mental health score by ethnicity?
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CREATE TABLE Ethnicities (EthnicityID INT,Ethnicity VARCHAR(50)); CREATE TABLE MentalHealthScores (MH_ID INT,EthnicityID INT,MentalHealthScore INT); INSERT INTO Ethnicities (EthnicityID,Ethnicity) VALUES (1,'Hispanic'),(2,'African American'),(3,'Asian'),(4,'Caucasian'); INSERT INTO MentalHealthScores (MH_ID,EthnicityID,MentalHealthScore) VALUES (1,1,70),(2,1,75),(3,2,80),(4,2,85),(5,3,90),(6,3,95),(7,4,65),(8,4,70);
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SELECT e.Ethnicity, MIN(mhs.MentalHealthScore) as Min_Score FROM MentalHealthScores mhs JOIN Ethnicities e ON mhs.EthnicityID = e.EthnicityID GROUP BY e.Ethnicity;
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What is the total number of marine species in the Southern Ocean that are affected by maritime safety issues?
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CREATE TABLE marine_species (id INT,name TEXT,ocean TEXT,affected_by_safety_issues BOOLEAN); INSERT INTO marine_species (id,name,ocean,affected_by_safety_issues) VALUES (1,'Krill','Southern',TRUE),(2,'Blue Whale','Atlantic',FALSE),(3,'Penguin','Southern',TRUE);
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SELECT COUNT(*) FROM marine_species WHERE ocean = 'Southern' AND affected_by_safety_issues = TRUE;
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Which spacecraft have been launched by the European Space Agency?
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CREATE TABLE Spacecraft (id INT,name VARCHAR(255),manufacturer VARCHAR(255),type VARCHAR(255),launch_date DATE); INSERT INTO Spacecraft (id,name,manufacturer,type,launch_date) VALUES (3,'Galileo Orbiter','ESA','Robotic','1989-10-18'); INSERT INTO Spacecraft (id,name,manufacturer,type,launch_date) VALUES (4,'Rosetta','ESA','Robotic','2004-03-02');
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SELECT name FROM Spacecraft WHERE manufacturer = 'ESA';
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What was the maximum labor cost for each month in Oregon in 2022?
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CREATE TABLE Labor_OR (labor_id INT,labor_cost FLOAT,labor_state VARCHAR(20),labor_date DATE); INSERT INTO Labor_OR (labor_id,labor_cost,labor_state,labor_date) VALUES (1,300,'Oregon','2022-01-01'),(2,350,'Oregon','2022-01-15'),(3,400,'Oregon','2022-03-01');
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SELECT labor_date, MAX(labor_cost) OVER (PARTITION BY EXTRACT(MONTH FROM labor_date)) AS max_labor_cost FROM Labor_OR WHERE labor_state = 'Oregon' AND labor_date >= '2022-01-01' AND labor_date < '2023-01-01' ORDER BY labor_date;
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What is the minimum dissolved oxygen level in the Indian Ocean?
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CREATE TABLE location (location_id INT,location_name TEXT); INSERT INTO location (location_id,location_name) VALUES (1,'Indian Ocean'); CREATE TABLE measurement (measurement_id INT,location_id INT,dissolved_oxygen FLOAT); INSERT INTO measurement (measurement_id,location_id,dissolved_oxygen) VALUES (1,1,6.5),(2,1,6.8),(3,1,6.9),(4,1,7.1),(5,1,7.2);
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SELECT MIN(dissolved_oxygen) FROM measurement WHERE location_id = (SELECT location_id FROM location WHERE location_name = 'Indian Ocean');
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List the top 3 countries with the most aircraft accidents in 2020.
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CREATE TABLE Aircraft_Accidents (aircraft_model VARCHAR(255),accident_date DATE,country VARCHAR(255)); INSERT INTO Aircraft_Accidents (aircraft_model,accident_date,country) VALUES ('Boeing 737','2020-01-01','USA'),('Airbus A320','2020-02-01','France'),('Boeing 747','2020-03-01','UK'),('Boeing 737','2020-04-01','Canada'),('Airbus A320','2020-05-01','Germany');
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SELECT country, COUNT(*) AS num_accidents FROM Aircraft_Accidents WHERE YEAR(accident_date) = 2020 GROUP BY country ORDER BY num_accidents DESC LIMIT 3;
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How many mobile subscribers are there in each country?
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CREATE TABLE mobile_subscribers (subscriber_id INT,home_location VARCHAR(50)); INSERT INTO mobile_subscribers (subscriber_id,home_location) VALUES (1,'USA'),(2,'Mexico'),(3,'Canada'),(4,'USA'),(5,'Canada');
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SELECT home_location, COUNT(*) FROM mobile_subscribers GROUP BY home_location;
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Delete the supplier with id 2
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CREATE TABLE suppliers (id INT PRIMARY KEY,name TEXT,location TEXT,sustainability_rating REAL);
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DELETE FROM suppliers WHERE id = 2;
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List the names and locations of mines that have mined any type of metal.
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CREATE TABLE mine (id INT,name VARCHAR(50),location VARCHAR(50));CREATE TABLE coal_mine (mine_id INT,amount INT);CREATE TABLE iron_mine (mine_id INT,amount INT);CREATE TABLE gold_mine (mine_id INT,amount INT);CREATE TABLE silver_mine (mine_id INT,amount INT);
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SELECT m.name, m.location FROM mine m LEFT JOIN coal_mine c ON m.id = c.mine_id LEFT JOIN iron_mine i ON m.id = i.mine_id LEFT JOIN gold_mine g ON m.id = g.mine_id LEFT JOIN silver_mine s ON m.id = s.mine_id WHERE c.mine_id IS NOT NULL OR i.mine_id IS NOT NULL OR g.mine_id IS NOT NULL OR s.mine_id IS NOT NULL;
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What is the average rating of products sold by vendors from Asia?
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CREATE TABLE vendors(vendor_id INT,vendor_name TEXT,country TEXT); INSERT INTO vendors(vendor_id,vendor_name,country) VALUES (1,'VendorA','India'),(2,'VendorB','China'),(3,'VendorC','Japan'); CREATE TABLE products(product_id INT,product_name TEXT,rating INT); INSERT INTO products(product_id,product_name,rating) VALUES (1,'ProductA',4),(2,'ProductB',5),(3,'ProductC',3);
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SELECT AVG(products.rating) FROM products JOIN vendors ON products.vendor_id = vendors.vendor_id WHERE vendors.country = 'Asia';
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Update the TotalEngagement column in the ExhibitionAnalytics table for the 'Ancient Art' exhibition to 300.
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CREATE TABLE ExhibitionAnalytics (ExhibitionID INT,ExhibitionName VARCHAR(50),TotalVisitors INT,TotalEngagement INT);
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UPDATE ExhibitionAnalytics SET TotalEngagement = 300 WHERE ExhibitionName = 'Ancient Art';
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What is the total quantity of recycled materials used in garment production?
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CREATE TABLE GarmentProduction (garmentID INT,material VARCHAR(20),year INT,quantity INT); INSERT INTO GarmentProduction (garmentID,material,year,quantity) VALUES (1,'Recycled Polyester',2020,12000),(2,'Organic Cotton',2020,15000),(3,'Recycled Denim',2019,8000),(4,'Recycled Polyester',2019,9000),(5,'Recycled Cotton',2020,10000);
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SELECT SUM(quantity) FROM GarmentProduction WHERE material LIKE '%Recycled%';
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List the voyages with their start and end ports and the time difference between arrivals.
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CREATE TABLE Voyage (VoyageID INT,VesselID INT,StartPortID INT,EndPortID INT,StartDate DATETIME,EndDate DATETIME); INSERT INTO Voyage (VoyageID,VesselID,StartPortID,EndPortID,StartDate,EndDate) VALUES (1,1,1,2,'2022-01-01 08:00:00','2022-01-02 10:00:00'); INSERT INTO Voyage (VoyageID,VesselID,StartPortID,EndPortID,StartDate,EndDate) VALUES (2,2,2,1,'2022-01-03 12:00:00','2022-01-04 14:00:00');
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SELECT v1.VesselID, p1.PortName AS StartPort, p2.PortName AS EndPort, DATEDIFF(HOUR, v1.StartDate, v1.EndDate) AS TimeDifference FROM Voyage v1 JOIN Port p1 ON v1.StartPortID = p1.PortID JOIN Port p2 ON v1.EndPortID = p2.PortID;
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Which buses have not had a safety inspection in the last 6 months?
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CREATE TABLE Buses (id INT,model VARCHAR(255),last_inspection DATETIME);
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SELECT B.id, B.model FROM Buses B LEFT JOIN (SELECT bus_id, MAX(last_inspection) as max_inspection FROM Buses GROUP BY bus_id) BI ON B.id = BI.bus_id WHERE B.last_inspection < BI.max_inspection - INTERVAL 6 MONTH;
|
What was the maximum number of likes received by posts in Spanish?
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CREATE TABLE posts (id INT,user_id INT,post_text VARCHAR(255),likes INT,language VARCHAR(10)); INSERT INTO posts (id,user_id,post_text,likes,language) VALUES (1,1,'Hola!',20,'es'),(2,2,'Hello!',15,'en'),(3,3,'Bonjour!',25,'fr'),(4,4,'Olá!',18,'pt');
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SELECT MAX(likes) FROM posts WHERE language = 'es';
|
List all mental health parity laws in Massachusetts.
|
CREATE TABLE MentalHealthParity (id INT,law_name TEXT,state TEXT); INSERT INTO MentalHealthParity (id,law_name,state) VALUES (1,'Parity Act 2020','Massachusetts'); INSERT INTO MentalHealthParity (id,law_name,state) VALUES (2,'Equity Act 2018','Massachusetts');
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SELECT * FROM MentalHealthParity WHERE state = 'Massachusetts';
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What is the average gas production in the 'Africa' region for the year 2020? (Assuming gas production values are stored in a separate column)
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CREATE TABLE production (production_id INT,location VARCHAR(255),year INT,gas_production FLOAT); INSERT INTO production (production_id,location,year,gas_production) VALUES (1,'Nigeria',2020,5000000),(2,'Algeria',2020,4000000),(3,'Egypt',2019,3000000);
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SELECT AVG(gas_production) FROM production WHERE location LIKE '%Africa%' AND year = 2020;
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Show the number of employees hired in each month of the year, broken down by department.
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CREATE TABLE employees (id INT,name VARCHAR(50),department VARCHAR(50),hire_date DATE); INSERT INTO employees (id,name,department,hire_date) VALUES (1,'John Doe','IT','2021-03-01'),(2,'Jane Smith','Marketing','2021-07-15'),(3,'Mike Johnson','IT','2021-02-12'),(4,'Sara Connor','Marketing','2021-10-04');
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SELECT department, DATE_TRUNC('month', hire_date) AS hire_month, COUNT(*) AS num_hires FROM employees GROUP BY department, hire_month;
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Update the vessel's safety record with the latest inspection date and score.
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CREATE TABLE vessels (id INT,name VARCHAR(255),safety_record JSON); CREATE TABLE inspections (vessel_id INT,inspection_date DATE,score INT); INSERT INTO vessels VALUES (1,'Vessel A','{"inspection_date": "2021-01-01","score": 90}'::JSON),(2,'Vessel B','{"inspection_date": "2021-02-01","score": 85}'::JSON); INSERT INTO inspections VALUES (1,'2021-03-01',95),(2,'2021-04-01',90);
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UPDATE vessels v SET safety_record = jsonb_set(v.safety_record, '{inspection_date, score}', jsonb_build_object('inspection_date', (SELECT i.inspection_date FROM inspections i WHERE i.vessel_id = v.id ORDER BY i.inspection_date DESC LIMIT 1), 'score', (SELECT i.score FROM inspections i WHERE i.vessel_id = v.id ORDER BY i.inspection_date DESC LIMIT 1))) WHERE id IN (SELECT i.vessel_id FROM inspections i);
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How many news articles were published per month in 2021 in the 'news' schema?
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CREATE TABLE news.articles (article_id INT,title VARCHAR(100),publish_date DATE); INSERT INTO news.articles (article_id,title,publish_date) VALUES (1,'Article 1','2021-01-01'),(2,'Article 2','2021-02-01');
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SELECT MONTH(publish_date), COUNT(*) FROM news.articles WHERE YEAR(publish_date) = 2021 GROUP BY MONTH(publish_date);
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What is the total weight of indoor grown cannabis sold by dispensaries in Colorado in 2021?
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CREATE TABLE Dispensaries (id INT,dispensary_name VARCHAR(255),state VARCHAR(255),income DECIMAL(10,2)); INSERT INTO Dispensaries (id,dispensary_name,state,income) VALUES (1,'Green Earth Dispensary','Colorado',125000.00); CREATE TABLE Cannabis_Sales (id INT,dispensary_id INT,sale_year INT,sale_weight DECIMAL(10,2),sale_type VARCHAR(255)); INSERT INTO Cannabis_Sales (id,dispensary_id,sale_year,sale_weight,sale_type) VALUES (1,1,2021,500.00,'Indoor');
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SELECT SUM(sale_weight) FROM Dispensaries d JOIN Cannabis_Sales s ON d.id = s.dispensary_id WHERE d.state = 'Colorado' AND s.sale_year = 2021 AND s.sale_type = 'Indoor';
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What is the total waste generation in kg for the region 'Greater Toronto' for the year 2021?
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CREATE TABLE waste_generation (region VARCHAR(50),year INT,waste_kg FLOAT); INSERT INTO waste_generation (region,year,waste_kg) VALUES ('Greater Toronto',2021,123456.78);
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SELECT SUM(waste_kg) FROM waste_generation WHERE region = 'Greater Toronto' AND year = 2021;
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Find the maximum construction cost for pipelines in 'Alberta'
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CREATE TABLE pipelines (id INT,name VARCHAR(50),location VARCHAR(50),construction_cost DECIMAL(10,2)); INSERT INTO pipelines (id,name,location,construction_cost) VALUES (1,'Alberta Clipper Pipeline','Alberta',1500000000.00);
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SELECT MAX(construction_cost) FROM pipelines WHERE location = 'Alberta';
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How many subscribers are using premium voice plans in each state?
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CREATE TABLE voice_plans (plan_id int,plan_cost float,plan_type varchar(10)); INSERT INTO voice_plans (plan_id,plan_cost,plan_type) VALUES (1,30,'basic'),(2,50,'premium'); CREATE TABLE voice_subscribers (subscriber_id int,voice_plan varchar(10),state varchar(20)); INSERT INTO voice_subscribers (subscriber_id,voice_plan,state) VALUES (1,'basic','WA'),(2,'premium','NY'),(3,'basic','IL');
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SELECT state, COUNT(*) as num_premium_subscribers FROM voice_subscribers sub INNER JOIN voice_plans plan ON sub.voice_plan = plan.plan_type WHERE plan_type = 'premium' GROUP BY state;
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What is the total number of electric and autonomous vehicles in the electricautonomousvehicles schema?
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CREATE TABLE ElectricAutonomousVehicles (id INT,make VARCHAR(50),model VARCHAR(50),electric BOOLEAN,autonomous BOOLEAN);
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SELECT COUNT(*) FROM electricautonomousvehicles.ElectricAutonomousVehicles WHERE electric = TRUE OR autonomous = TRUE;
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How many players are there in the "EpicRacers" table, grouped by their preferred gaming platform (PC, Console, Mobile)?
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CREATE TABLE EpicRacers (PlayerID INT,Name VARCHAR(50),Platform VARCHAR(10)); INSERT INTO EpicRacers (PlayerID,Name,Platform) VALUES (1,'John','PC'),(2,'Amy','Console'),(3,'Mike','Mobile'),(4,'Linda','PC'),(5,'Sam','Console');
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SELECT Platform, COUNT(PlayerID) FROM EpicRacers GROUP BY Platform;
|
Which teams have no ticket sales in the last month?
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CREATE TABLE Teams (TeamID INT,TeamName VARCHAR(50)); INSERT INTO Teams (TeamID,TeamName) VALUES (1,'Red Dragons'),(2,'Blue Warriors'); CREATE TABLE TicketSales (SaleID INT,TeamID INT,SaleDate DATE); INSERT INTO TicketSales (SaleID,TeamID,SaleDate) VALUES (1,1,'2022-01-10'),(2,1,'2022-03-05'),(3,2,'2022-02-20'),(4,2,'2022-04-10'),(5,2,'2022-05-12');
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SELECT T.TeamName FROM Teams T LEFT JOIN TicketSales TS ON T.TeamID = TS.TeamID WHERE TS.SaleDate IS NULL OR TS.SaleDate < DATE_SUB(CURDATE(), INTERVAL 1 MONTH) GROUP BY T.TeamName;
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Reveal vessels with decreasing violations.
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CREATE TABLE VesselInspections2 (ID INT,Vessel VARCHAR(50),InspectionDate DATE,ViolationCount INT); INSERT INTO VesselInspections2 (ID,Vessel,InspectionDate,ViolationCount) VALUES (1,'SS Freedom','2020-01-01',3),(2,'SS Liberty','2020-01-02',2),(3,'SS Eagle','2020-01-03',4),(4,'SS Freedom','2020-01-04',2);
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SELECT Vessel, ViolationCount, LAG(ViolationCount) OVER (PARTITION BY Vessel ORDER BY InspectionDate) as PreviousViolationCount FROM VesselInspections2;
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What is the total number of properties in areas with affordable housing and sustainability ratings above 70?
|
CREATE TABLE properties (id INT,affordability VARCHAR(20),sustainability_rating FLOAT); INSERT INTO properties (id,affordability,sustainability_rating) VALUES (1,'affordable',80.5),(2,'unaffordable',60.0);
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SELECT COUNT(*) FROM properties WHERE affordability = 'affordable' AND sustainability_rating > 70;
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Update the room prices for the 'Sustainable Hotel' in France by 10% for 2023.
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CREATE TABLE room_prices (hotel_id INT,year INT,price INT); INSERT INTO room_prices (hotel_id,year,price) VALUES (1,2022,150); INSERT INTO room_prices (hotel_id,year,price) VALUES (1,2023,150);
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UPDATE room_prices SET price = price * 1.1 WHERE hotel_id = 1 AND year = 2023;
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What is the total volume of timber harvested in tropical rainforests in 2020?
|
CREATE TABLE forests (id INT,name VARCHAR(255),location VARCHAR(255),biome VARCHAR(255),area FLOAT,elevation_range VARCHAR(255)); INSERT INTO forests (id,name,location,biome,area,elevation_range) VALUES (1,'Amazon Rainforest','South America','Tropical Rainforest',6700000,'0 - 300 m'); CREATE TABLE timber_harvest (id INT,forest_id INT,year INT,volume FLOAT); INSERT INTO timber_harvest (id,forest_id,year,volume) VALUES (1,1,2020,15000);
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SELECT SUM(volume) FROM timber_harvest WHERE forest_id IN (SELECT id FROM forests WHERE biome = 'Tropical Rainforest') AND year = 2020;
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Find employees who have the same first name as their department head.
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CREATE TABLE Employees (EmployeeID INT,FirstName VARCHAR(50),LastName VARCHAR(50),Department VARCHAR(50),ManagerID INT,ManagerFirstName VARCHAR(50),ManagerLastName VARCHAR(50)); INSERT INTO Employees (EmployeeID,FirstName,LastName,Department,ManagerID,ManagerFirstName,ManagerLastName) VALUES (1,'Jose','Garcia','Marketing',2,'John','Doe'),(2,'John','Doe','IT',NULL,'John','Doe'),(3,'Alice','Williams','Marketing',1,'John','Doe'),(4,'Charlie','Brown','HR',NULL,'Sara','Lee'),(5,'Denise','Davis','Marketing',1,'John','Doe');
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SELECT E1.FirstName FROM Employees E1 INNER JOIN Employees E2 ON E1.ManagerID = E2.EmployeeID WHERE E1.FirstName = E2.FirstName AND E1.Department = E2.Department;
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How many climate adaptation projects were implemented in Small Island Developing States (SIDS) in the last 3 years?
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CREATE TABLE climate_adaptation_projects (project VARCHAR(50),location VARCHAR(50),year INT); INSERT INTO climate_adaptation_projects (project,location,year) VALUES ('Sea Level Rise Mitigation','Maldives',2019),('Water Management','Barbados',2020),('Disaster Risk Reduction','Cape Verde',2021),('Coastal Protection','Marshall Islands',2021); CREATE TABLE sids (location VARCHAR(50),sids_status VARCHAR(50)); INSERT INTO sids (location,sids_status) VALUES ('Maldives','SIDS'),('Barbados','SIDS'),('Cape Verde','SIDS'),('Marshall Islands','SIDS');
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SELECT COUNT(*) FROM climate_adaptation_projects cp INNER JOIN sids s ON cp.location = s.location WHERE s.sids_status = 'SIDS' AND cp.year BETWEEN 2019 AND 2021;
|
Show the daily number of posts in the 'social_media' table for the top 5 regions with the most posts.
|
CREATE TABLE social_media(user_id INT,user_name VARCHAR(50),region VARCHAR(50),post_date DATE,likes INT);
|
SELECT post_date, region, COUNT(*) as daily_posts FROM (SELECT region, post_date, user_id FROM social_media GROUP BY region, post_date, user_id ORDER BY region, COUNT(*) DESC LIMIT 5) as top_regions GROUP BY post_date, region;
|
Identify companies with no diversity metrics recorded
|
CREATE TABLE diversity (company_name VARCHAR(255),gender_distribution VARCHAR(50),ethnicity_distribution VARCHAR(50)); INSERT INTO diversity (company_name,gender_distribution,ethnicity_distribution) VALUES ('Acme Inc','50/50','Diverse'),('Beta Corp','60/40','Not Diverse'),('Charlie LLC',NULL,NULL);
|
SELECT company_name FROM diversity WHERE gender_distribution IS NULL AND ethnicity_distribution IS NULL;
|
How many teachers have completed professional development courses in the last 6 months?
|
CREATE TABLE teachers (teacher_id INT,teacher_name VARCHAR(50)); INSERT INTO teachers (teacher_id,teacher_name) VALUES (1,'Alice'),(2,'Bob'),(3,'Charlie'); CREATE TABLE professional_development_courses (course_id INT,course_name VARCHAR(50),completion_date DATE); INSERT INTO professional_development_courses (course_id,course_name,completion_date) VALUES (1,'Python','2023-01-01'),(2,'R','2023-02-15'),(3,'JavaScript','2023-04-20');
|
SELECT COUNT(DISTINCT teachers.teacher_id) as num_teachers FROM teachers JOIN professional_development_courses ON teachers.teacher_id = professional_development_courses.teacher_id WHERE professional_development_courses.completion_date >= DATEADD(month, -6, GETDATE());
|
What is the total number of medals won by athletes in the 'Athletes' table who are from the United States, grouped by the type of medal?
|
CREATE TABLE athletes (athlete_id INT,name VARCHAR(50),nationality VARCHAR(50),age INT,medal VARCHAR(10),event VARCHAR(50)); INSERT INTO athletes (athlete_id,name,nationality,age,medal,event) VALUES (1,'Michael Phelps','United States',35,'Gold','Swimming');
|
SELECT medal, SUM(1) as total_medals FROM athletes WHERE nationality = 'United States' GROUP BY medal;
|
List all users and their respective number of posts, ordered by the user_id in ascending order.
|
CREATE TABLE user_details (user_id INT,num_posts INT); INSERT INTO user_details (user_id,num_posts) VALUES (1,25),(2,32),(3,18),(4,45);
|
SELECT user_id, num_posts FROM user_details ORDER BY user_id ASC;
|
How many aircraft maintenance requests were made in the Middle East in Q3 2021, with a priority level of 'Urgent'?
|
CREATE TABLE AircraftMaintenance (id INT,region VARCHAR(20),priority VARCHAR(10),request_date DATE); INSERT INTO AircraftMaintenance (id,region,priority,request_date) VALUES (1,'Middle East','Urgent','2021-09-15');
|
SELECT COUNT(*) as urgent_requests FROM AircraftMaintenance WHERE region = 'Middle East' AND priority = 'Urgent' AND request_date BETWEEN '2021-07-01' AND '2021-09-30';
|
What is the total number of visitors for each destination in the international_visitors table?
|
CREATE TABLE destinations (destination_id INT,name VARCHAR(50),country_id INT); INSERT INTO destinations (destination_id,name,country_id) VALUES (3,'Milford Sound',1); INSERT INTO destinations (destination_id,name,country_id) VALUES (4,'Prambanan Temple',2);
|
SELECT d.name, SUM(i.num_visitors) as total_visitors FROM destinations d INNER JOIN international_visitors i ON d.destination_id = i.country_id GROUP BY d.name;
|
Delete all albums released before the year 2000.
|
CREATE TABLE albums (id INT,title TEXT,release_date DATE); INSERT INTO albums (id,title,release_date) VALUES (1,'Millennium','1999-12-31'),(2,'Hybrid Theory','2000-01-02');
|
DELETE FROM albums WHERE release_date < '2000-01-01';
|
How many farms are in each state of the USA?
|
CREATE TABLE farm (id INT,farm_name VARCHAR(255),state VARCHAR(255),country VARCHAR(255)); INSERT INTO farm (id,farm_name,state,country) VALUES (1,'Farm 1','California','USA'); INSERT INTO farm (id,farm_name,state,country) VALUES (2,'Farm 2','Texas','USA');
|
SELECT state, COUNT(*) AS num_farms FROM farm WHERE country = 'USA' GROUP BY state;
|
Identify the top 2 cities with the highest number of virtual tours in the US.
|
CREATE TABLE tour_bookings(id INT,city TEXT,booking_date DATE,booking_type TEXT); INSERT INTO tour_bookings (id,city,booking_date,booking_type) VALUES (1,'New York','2022-04-01','virtual'),(2,'Los Angeles','2022-04-02','virtual'),(3,'Chicago','2022-04-03','in-person');
|
SELECT city, COUNT(*) AS num_virtual_tours FROM tour_bookings WHERE booking_type = 'virtual' GROUP BY city ORDER BY num_virtual_tours DESC LIMIT 2;
|
Add a new network tower to the network_towers table
|
CREATE TABLE network_towers (tower_id INT,location VARCHAR(50),latitude DECIMAL(9,6),longitude DECIMAL(9,6),installed_date DATE);
|
INSERT INTO network_towers (tower_id, location, latitude, longitude, installed_date) VALUES (54321, 'City Center', 40.7128, -74.0060, '2021-12-15');
|
What is the average heart rate of members aged 25-30 who use our wearable devices, grouped by gender?
|
CREATE TABLE members (id INT,age INT,gender VARCHAR(10)); CREATE TABLE wearables (id INT,member_id INT,heart_rate INT);
|
SELECT gender, AVG(heart_rate) FROM members INNER JOIN wearables ON members.id = wearables.member_id WHERE members.age BETWEEN 25 AND 30 GROUP BY gender;
|
What was the average travel expenditure for US tourists visiting Costa Rica in 2019?
|
CREATE TABLE tourists (id INT,country VARCHAR(255),destination VARCHAR(255),year INT,expenditure DECIMAL(10,2)); INSERT INTO tourists (id,country,destination,year,expenditure) VALUES (1,'USA','Costa Rica',2019,1500),(2,'USA','Costa Rica',2019,1800),(3,'USA','Costa Rica',2019,1200),(4,'USA','Costa Rica',2018,1300),(5,'Canada','Costa Rica',2019,1000);
|
SELECT AVG(expenditure) FROM tourists WHERE country = 'USA' AND destination = 'Costa Rica' AND year = 2019;
|
List the number of wells in each country, sorted by the number of wells in descending order.
|
CREATE TABLE wells (well_id INT,well_name VARCHAR(255),location VARCHAR(255),country VARCHAR(255)); INSERT INTO wells (well_id,well_name,location,country) VALUES (1,'Well A','North Sea','UK'),(2,'Well B','North Sea','Norway'),(3,'Well C','Gulf of Mexico','USA'),(4,'Well D','South China Sea','Vietnam');
|
SELECT country, COUNT(*) AS num_wells FROM wells GROUP BY country ORDER BY num_wells DESC;
|
Which countries have the most wind power projects?
|
CREATE TABLE project_wind (project_name TEXT,country TEXT); INSERT INTO project_wind (project_name,country) VALUES ('Project A','Country A'),('Project B','Country A'),('Project C','Country B'),('Project D','Country C'),('Project E','Country D'),('Project F','Country D');
|
SELECT country, COUNT(*) FROM project_wind GROUP BY country ORDER BY COUNT(*) DESC;
|
What is the maximum health equity metric by region?
|
CREATE TABLE health_equity_metrics (region VARCHAR(10),metric INT); INSERT INTO health_equity_metrics (region,metric) VALUES ('North',90),('South',85),('East',95),('West',88);
|
SELECT region, MAX(metric) OVER (PARTITION BY 1) as max_metric FROM health_equity_metrics;
|
Display the total number of marine species in the Pacific Ocean.
|
CREATE TABLE marine_species_2 (name TEXT,location TEXT,num_individuals INT); INSERT INTO marine_species_2 (name,location,num_individuals) VALUES ('Clownfish','Indian Ocean','10000'),('Dolphin','Pacific Ocean','20000');
|
SELECT SUM(num_individuals) FROM marine_species_2 WHERE location = 'Pacific Ocean';
|
What are the total rare earth element reserves for each country?
|
CREATE TABLE country_reserves (country VARCHAR(50),reserves INT); INSERT INTO country_reserves (country,reserves) VALUES ('China',44000),('USA',1300),('Australia',3800),('India',674),('Brazil',220);
|
SELECT country, SUM(reserves) FROM country_reserves GROUP BY country;
|
What is the total number of vessels operating in the Pacific and Atlantic Oceans?
|
CREATE TABLE vessels_2 (vessel_id INT,name VARCHAR(255),operating_region VARCHAR(255));
|
SELECT COUNT(*) FROM vessels_2 WHERE operating_region IN ('Pacific', 'Atlantic');
|
What is the total number of cybersecurity incidents and the average severity for each department, partitioned by month and ordered by total number of cybersecurity incidents in descending order?
|
CREATE TABLE cybersecurity_incident (id INT,department_id INT,severity INT,incident_date DATE); INSERT INTO cybersecurity_incident (id,department_id,severity,incident_date) VALUES (1,1,8,'2021-03-15'); INSERT INTO cybersecurity_incident (id,department_id,severity,incident_date) VALUES (2,2,5,'2022-01-10'); CREATE TABLE department (id INT,name VARCHAR(255)); INSERT INTO department (id,name) VALUES (1,'IT'); INSERT INTO department (id,name) VALUES (2,'Security');
|
SELECT d.name as department, DATEPART(YEAR, incident_date) as year, DATEPART(MONTH, incident_date) as month, COUNT(ci.id) as total_cybersecurity_incidents, AVG(ci.severity) as avg_severity, ROW_NUMBER() OVER (PARTITION BY d.name ORDER BY COUNT(ci.id) DESC) as rank FROM cybersecurity_incident ci JOIN department d ON ci.department_id = d.id GROUP BY d.name, DATEPART(YEAR, incident_date), DATEPART(MONTH, incident_date) ORDER BY total_cybersecurity_incidents DESC;
|
Show the total fare collected per route and day of the week in the 'payment' and 'route' tables
|
CREATE SCHEMA IF NOT EXISTS public_transport;CREATE TABLE IF NOT EXISTS public_transport.payment (payment_id SERIAL PRIMARY KEY,passenger_id INTEGER,route_id INTEGER,fare DECIMAL,payment_date DATE);CREATE TABLE IF NOT EXISTS public_transport.route (route_id INTEGER PRIMARY KEY,route_name TEXT);INSERT INTO public_transport.payment (passenger_id,route_id,fare,payment_date) VALUES (1,101,2.50,'2021-10-01'),(2,102,4.00,'2021-10-02'),(3,101,2.00,'2021-10-03');INSERT INTO public_transport.route (route_id,route_name) VALUES (101,'Route A'),(102,'Route B');
|
SELECT EXTRACT(DOW FROM payment_date) AS day_of_week, route_id, SUM(fare) FROM public_transport.payment JOIN public_transport.route ON payment.route_id = route.route_id GROUP BY EXTRACT(DOW FROM payment_date), route_id;
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