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How many units of women's tops were sold in Q3 2020?
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CREATE TABLE inventory (item_type VARCHAR(10),quarter VARCHAR(2),year INT,units_sold INT); INSERT INTO inventory (item_type,quarter,year,units_sold) VALUES ('women_tops','Q3',2020,1200),('women_tops','Q3',2020,1500),('women_tops','Q3',2020,1300);
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SELECT SUM(units_sold) FROM inventory WHERE item_type = 'women_tops' AND quarter = 'Q3' AND year = 2020;
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Find the average size, in square feet, of properties with inclusive housing policies in the city of Denver.
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CREATE TABLE property (id INT,size INT,city VARCHAR(20),inclusive_housing_policy BOOLEAN);
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SELECT AVG(size) FROM property WHERE city = 'Denver' AND inclusive_housing_policy = TRUE;
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Identify the farm with the lowest biomass of fish for a given species in a given year?
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CREATE TABLE Farm (FarmID INT,FarmName VARCHAR(255)); CREATE TABLE Stock (StockID INT,FarmID INT,FishSpecies VARCHAR(255),Weight DECIMAL(10,2),StockDate DATE); INSERT INTO Farm (FarmID,FarmName) VALUES (1,'Farm A'),(2,'Farm B'),(3,'Farm C'),(4,'Farm D'); INSERT INTO Stock (StockID,FarmID,FishSpecies,Weight,StockDate) VALUES (1,1,'Tilapia',5.5,'2022-01-01'),(2,1,'Salmon',12.3,'2022-01-02'),(3,2,'Tilapia',6.0,'2022-01-03'),(4,2,'Catfish',8.2,'2022-01-04'),(5,3,'Tilapia',9.0,'2022-01-05'),(6,3,'Salmon',11.0,'2022-01-06'),(7,4,'Tilapia',10.0,'2022-01-07'),(8,4,'Salmon',12.0,'2022-01-08');
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SELECT FarmName, FishSpecies, MIN(Weight) OVER (PARTITION BY FishSpecies) as MinBiomass FROM Stock JOIN Farm ON Stock.FarmID = Farm.FarmID WHERE DATE_TRUNC('year', StockDate) = 2022;
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Find the number of unique viewers for each movie and the total number of views for each movie
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CREATE TABLE views (viewer_id INT,movie_title VARCHAR(255),views INT); INSERT INTO views (viewer_id,movie_title,views) VALUES (1,'Movie1',1000000),(2,'Movie2',2000000),(3,'Movie1',1500000),(4,'Movie3',500000);
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SELECT movie_title, COUNT(DISTINCT viewer_id) as unique_viewers, SUM(views) as total_views FROM views GROUP BY movie_title;
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What is the minimum number of doctors working in rural hospitals in India?
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CREATE TABLE hospitals (id INT,name VARCHAR(50),location VARCHAR(50),num_doctors INT);
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SELECT MIN(num_doctors) FROM hospitals WHERE location LIKE '%India%' AND location LIKE '%rural%';
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What are the total fare collections for each vehicle type in the past month?
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CREATE TABLE vehicle_types (vehicle_type_id INT,vehicle_type VARCHAR(255)); CREATE TABLE trips (trip_id INT,vehicle_type_id INT,fare_amount DECIMAL(5,2),trip_date DATE);
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SELECT vt.vehicle_type, SUM(t.fare_amount) as total_fare FROM vehicle_types vt INNER JOIN trips t ON vt.vehicle_type_id = t.vehicle_type_id WHERE t.trip_date >= DATE_SUB(CURRENT_DATE, INTERVAL 1 MONTH) GROUP BY vt.vehicle_type;
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How many vessels are there in the 'Atlantic' and 'Arctic' regions combined?
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CREATE TABLE vessels (id INT,name TEXT,region TEXT); INSERT INTO vessels (id,name,region) VALUES (1,'VesselA','Atlantic'); INSERT INTO vessels (id,name,region) VALUES (2,'VesselB','Arctic'); INSERT INTO vessels (id,name,region) VALUES (3,'VesselC','Atlantic');
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SELECT COUNT(*) FROM vessels WHERE region IN ('Atlantic', 'Arctic')
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Update the 'Explainable AI' model named 'SHAP' with a new method
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CREATE TABLE xai_models (id INT,name VARCHAR(255),type VARCHAR(255),method VARCHAR(255)); INSERT INTO xai_models (id,name,type,method) VALUES (1,'SHAP','Explainable AI','TreeExplainer'),(2,'DeepLIFT','Explainable AI','Backpropagation');
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UPDATE xai_models SET method = 'KernelExplainer' WHERE name = 'SHAP';
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How many items are there in the menu that have 'Spicy' in their name?
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CREATE TABLE menu (item_id INT,item_name TEXT); INSERT INTO menu (item_id,item_name) VALUES (1,'Spicy Quinoa'),(2,'Tofu Stir Fry'),(3,'Chickpea Curry'),(4,'Beef Burrito'),(5,'Chicken Alfredo'),(6,'Fish and Chips'),(7,'Veggie Pizza'),(8,'Spicy Beef Burrito'),(9,'Spicy Fish and Chips'),(10,'Spicy Veggie Pizza');
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SELECT COUNT(*) FROM menu WHERE item_name LIKE '%Spicy%';
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Remove a record from the network_investments table
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CREATE TABLE network_investments (investment_id INT,location VARCHAR(50),investment_type VARCHAR(50),investment_amount DECIMAL(10,2),investment_date DATE);
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DELETE FROM network_investments WHERE investment_id = 67890;
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Which regions have the most companies founded by individuals from underrepresented racial or ethnic groups?
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CREATE TABLE Companies (id INT,name TEXT,region TEXT,founder_underrepresented BOOLEAN); INSERT INTO Companies (id,name,region,founder_underrepresented) VALUES (1,'Solar Power LLC','North America',TRUE); INSERT INTO Companies (id,name,region,founder_underrepresented) VALUES (2,'Wind Energy GmbH','Europe',FALSE);
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SELECT region, COUNT(*) FROM Companies WHERE founder_underrepresented = TRUE GROUP BY region;
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What is the average safety_rating for vehicles manufactured in the US?
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CREATE TABLE vehicles (id INT,make VARCHAR(50),model VARCHAR(50),year INT,safety_rating FLOAT,manufacturer_country VARCHAR(50)); INSERT INTO vehicles (id,make,model,year,safety_rating,manufacturer_country) VALUES (1,'Tesla','Model S',2020,5.3,'USA'); INSERT INTO vehicles (id,make,model,year,safety_rating,manufacturer_country) VALUES (2,'Toyota','Camry',2021,5.1,'Japan'); INSERT INTO vehicles (id,make,model,year,safety_rating,manufacturer_country) VALUES (3,'Ford','F-150',2022,5.0,'USA');
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SELECT AVG(safety_rating) FROM vehicles WHERE manufacturer_country = 'USA';
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What is the total runtime of movies directed by 'Director1'?
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CREATE TABLE movies (id INT,title TEXT,runtime INT,director TEXT); INSERT INTO movies (id,title,runtime,director) VALUES (1,'Movie1',120,'Director1'),(2,'Movie2',90,'Director2'),(3,'Movie3',105,'Director1');
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SELECT SUM(runtime) FROM movies WHERE director = 'Director1';
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Delete the aircraft with id 1 from the manufacturing table
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CREATE TABLE aircraft_manufacturing (id INT PRIMARY KEY,model VARCHAR(255),manufacturer VARCHAR(255),production_year INT); INSERT INTO aircraft_manufacturing (id,model,manufacturer,production_year) VALUES (1,'A320neo','Boeing',2016);
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DELETE FROM aircraft_manufacturing WHERE id = 1;
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Find the number of days between the first and last sale for each strain type in Oregon dispensaries.
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CREATE TABLE DispensarySales(id INT,dispensary VARCHAR(255),state VARCHAR(255),strain_type VARCHAR(255),sale_date DATE);
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SELECT strain_type, MAX(sale_date) - MIN(sale_date) as days_between_sales FROM DispensarySales WHERE state = 'Oregon' GROUP BY strain_type;
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How many building permits were issued in Florida in Q2 2022?
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CREATE TABLE BuildingPermits (PermitID INT,PermitDate DATE,State TEXT); INSERT INTO BuildingPermits VALUES (1,'2022-04-01','Florida'),(2,'2022-06-15','Florida'),(3,'2022-05-05','Florida');
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SELECT COUNT(*) FROM BuildingPermits WHERE State = 'Florida' AND YEAR(PermitDate) = 2022 AND QUARTER(PermitDate) = 2;
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What is the total funding amount for startups founded by people from underrepresented racial or ethnic backgrounds and are in the biotech industry?
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CREATE TABLE company (id INT,name TEXT,founder_race TEXT,industry TEXT,total_funding INT); INSERT INTO company (id,name,founder_race,industry,total_funding) VALUES (1,'Acme Inc','Hispanic','Biotech',500000); INSERT INTO company (id,name,founder_race,industry,total_funding) VALUES (2,'Beta Inc','Black','Biotech',1000000);
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SELECT SUM(total_funding) FROM company WHERE founder_race IN ('Hispanic', 'Black', 'Native American', 'Pacific Islander') AND industry = 'Biotech';
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Show the top 3 roles with the highest average salary in the 'salaries' table.
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CREATE TABLE salaries (id INT,employee_id INT,job_title VARCHAR(50),annual_salary DECIMAL(10,2)); INSERT INTO salaries (id,employee_id,job_title,annual_salary) VALUES (1,1,'Engineer',75000.00),(2,2,'Manager',85000.00),(3,3,'Operator',60000.00);
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SELECT job_title, AVG(annual_salary) as avg_salary FROM salaries GROUP BY job_title ORDER BY avg_salary DESC LIMIT 3;
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Total R&D expenditure for Oncology drugs in 2020
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CREATE TABLE rd_expenditure (expenditure_id INT,drug_name TEXT,disease_area TEXT,year INT,amount DECIMAL); INSERT INTO rd_expenditure (expenditure_id,drug_name,disease_area,year,amount) VALUES (1,'DrugC','Oncology',2020,5000000),(2,'DrugD','Cardiovascular',2019,6000000);
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SELECT SUM(amount) FROM rd_expenditure WHERE disease_area = 'Oncology' AND year = 2020;
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Which ESG factors are most commonly considered in sustainable agriculture investments?
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CREATE TABLE investment (investment_id INT,strategy VARCHAR(255),esg_factors TEXT); INSERT INTO investment (investment_id,strategy,esg_factors) VALUES (1,'Sustainable Agriculture','Water Management,Fair Trade,Biodiversity');
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SELECT strategy, REGEXP_SPLIT_TO_TABLE(esg_factors, ',') as esg_factor FROM investment WHERE strategy = 'Sustainable Agriculture' GROUP BY strategy, esg_factor;
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Insert a new album for the musician with id 3 with a title 'Eternal Sunshine' and a release date of '2024-05-15'
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CREATE TABLE musicians (id INT PRIMARY KEY,name VARCHAR(100),genre VARCHAR(50),country VARCHAR(50),birth_date DATE); CREATE TABLE albums (id INT PRIMARY KEY,title VARCHAR(100),release_date DATE,musician_id INT,FOREIGN KEY (musician_id) REFERENCES musicians(id));
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INSERT INTO albums (title, release_date, musician_id) VALUES ('Eternal Sunshine', '2024-05-15', 3);
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Identify the top 5 cities with the highest percentage of electric vehicle adoption in the 'ev_adoption_stats' table.
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CREATE TABLE ev_adoption_stats (id INT,city VARCHAR,state VARCHAR,num_evs INT,population INT);
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SELECT city, state, (num_evs * 100.0 / population)::DECIMAL(5,2) AS ev_adoption_percentage, RANK() OVER (ORDER BY (num_evs * 100.0 / population) DESC) AS rank FROM ev_adoption_stats WHERE rank <= 5;
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What is the minimum water pH level for each species, grouped by species, from the 'fish_stock' and 'ocean_health' tables?
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CREATE TABLE fish_stock (species VARCHAR(255),pH FLOAT); CREATE TABLE ocean_health (species VARCHAR(255),pH FLOAT); INSERT INTO fish_stock (species,pH) VALUES ('Cod',7.8),('Haddock',7.6); INSERT INTO ocean_health (species,pH) VALUES ('Cod',7.6),('Haddock',7.5);
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SELECT f.species, MIN(f.pH) FROM fish_stock f INNER JOIN ocean_health o ON f.species = o.species GROUP BY f.species;
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What is the CO2 emission reduction for each smart city initiative, ranked by the reduction?
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CREATE TABLE CityInitiatives (City VARCHAR(255),Initiative VARCHAR(255),CO2EmissionReduction FLOAT); INSERT INTO CityInitiatives (City,Initiative,CO2EmissionReduction) VALUES ('NYC','SmartGrid',15000),('LA','SmartTransit',20000),('Chicago','SmartBuildings',10000);
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SELECT Initiative, SUM(CO2EmissionReduction) AS Total_Reduction FROM CityInitiatives GROUP BY Initiative ORDER BY Total_Reduction DESC;
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How many vulnerabilities were found in the last 6 months for each product?
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CREATE TABLE vulnerabilities (id INT,timestamp TIMESTAMP,product VARCHAR(255),vulnerability_severity VARCHAR(255)); INSERT INTO vulnerabilities (id,timestamp,product,vulnerability_severity) VALUES (1,'2020-07-01 14:00:00','Product A','High'),(2,'2020-08-05 09:30:00','Product B','Medium');
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SELECT product, COUNT(*) as num_vulnerabilities FROM vulnerabilities WHERE timestamp >= NOW() - INTERVAL 6 MONTH GROUP BY product;
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Calculate the percentage of successful phishing attacks in the healthcare sector in the first half of 2021
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CREATE TABLE attacks (id INT,type VARCHAR(255),result VARCHAR(255),date DATE); INSERT INTO attacks (id,type,result,date) VALUES (1,'phishing','successful','2021-01-01'); INSERT INTO attacks (id,type,result,date) VALUES (2,'malware','unsuccessful','2021-01-02');
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SELECT 100.0 * SUM(CASE WHEN type = 'phishing' AND result = 'successful' THEN 1 ELSE 0 END) / COUNT(*) as percentage FROM attacks WHERE sector = 'healthcare' AND date >= '2021-01-01' AND date < '2021-07-01';
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How many energy efficiency projects are there in each state in the United States?
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CREATE TABLE project_energy_efficiency (project_name TEXT,state TEXT); INSERT INTO project_energy_efficiency (project_name,state) VALUES ('Project A','State A'),('Project B','State A'),('Project C','State B'),('Project D','State B'),('Project E','State C');
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SELECT state, COUNT(*) FROM project_energy_efficiency GROUP BY state;
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List the top 5 mobile and broadband plans with the highest monthly revenue, including the plan name, plan type, monthly fee, and average data usage, and the total number of subscribers for each plan.
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CREATE TABLE plan_info (plan_name VARCHAR(50),plan_type VARCHAR(20),monthly_fee FLOAT,average_data_usage FLOAT); CREATE TABLE subscriber_data (customer_id INT,service_type VARCHAR(20),plan_name VARCHAR(50));
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SELECT plan_info.plan_name, plan_info.plan_type, plan_info.monthly_fee, plan_info.average_data_usage, SUM(subscriber_data.customer_id) as total_subscribers FROM plan_info JOIN subscriber_data ON plan_info.plan_name = subscriber_data.plan_name WHERE plan_info.plan_name IN (SELECT plan_name FROM (SELECT plan_name, ROW_NUMBER() OVER (ORDER BY monthly_fee * average_data_usage DESC) as rank FROM plan_info) as subquery WHERE rank <= 5) GROUP BY plan_info.plan_name, plan_info.plan_type, plan_info.monthly_fee, plan_info.average_data_usage ORDER BY total_subscribers DESC;
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How many labor hours were reported for not sustainable construction projects?
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CREATE TABLE LaborHours (project_id INT,hours FLOAT,sustainability VARCHAR(255)); INSERT INTO LaborHours (project_id,hours,sustainability) VALUES (1,500.5,'sustainable'),(2,300.2,'not sustainable'),(3,400,'not sustainable');
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SELECT SUM(hours) FROM LaborHours WHERE sustainability = 'not sustainable';
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How many peacekeeping operations have been conducted by each country in Africa?
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CREATE TABLE peacekeeping_operations_2 (country VARCHAR(50),continent VARCHAR(50),operation_name VARCHAR(50),year INT); INSERT INTO peacekeeping_operations_2 (country,continent,operation_name,year) VALUES ('Egypt','Africa','UNOGIL',1958),('South Africa','Africa','UNAVEM',1991),('Nigeria','Africa','UNAMIR',1993),('Kenya','Africa','ONUSAL',1991),('Algeria','Africa','MINURSO',1991);
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SELECT country, COUNT(*) as total_operations FROM peacekeeping_operations_2 WHERE continent = 'Africa' GROUP BY country;
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Display the average voyage duration for each vessel type in the 'voyage_log' table
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CREATE TABLE voyage_log (id INT,vessel_type VARCHAR(50),voyage_duration INT);
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SELECT vessel_type, AVG(voyage_duration) FROM voyage_log GROUP BY vessel_type;
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Calculate the percentage change in chemical waste production per site, quarter over quarter.
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CREATE TABLE waste_production (site_name VARCHAR(50),quarter INT,year INT,waste_amount FLOAT); INSERT INTO waste_production (site_name,quarter,year,waste_amount) VALUES ('Site A',1,2021,150.5),('Site A',2,2021,160.7),('Site B',1,2021,125.7),('Site B',2,2021,130.5),('Site C',1,2021,200.3),('Site C',2,2021,210.9),('Site D',1,2021,75.9),('Site D',2,2021,80.1);
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SELECT site_name, ((waste_amount - LAG(waste_amount) OVER (PARTITION BY site_name ORDER BY year, quarter))/ABS(LAG(waste_amount) OVER (PARTITION BY site_name ORDER BY year, quarter))) * 100 as pct_change FROM waste_production;
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Delete records of drugs that were not approved in 2022 from the drug_approval table.
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CREATE TABLE drug_approval (drug VARCHAR(20),approval_date DATE); INSERT INTO drug_approval (drug,approval_date) VALUES ('DrugA','2022-01-01'),('DrugB','2022-02-01'),('DrugC','2021-03-01');
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DELETE FROM drug_approval WHERE drug NOT IN (SELECT drug FROM drug_approval WHERE approval_date BETWEEN '2022-01-01' AND '2022-12-31');
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Who are the top 5 donors contributing to political campaigns in the state of New York, including their donation amounts?
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CREATE TABLE donors(id INT,name TEXT,state TEXT,donations_total INT); INSERT INTO donors VALUES (1,'Donor A','New York',50000); INSERT INTO donors VALUES (2,'Donor B','New York',30000); INSERT INTO donors VALUES (3,'Donor C','California',70000); INSERT INTO donors VALUES (4,'Donor D','New York',60000); INSERT INTO donors VALUES (5,'Donor E','Texas',40000);
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SELECT name, SUM(donations_total) as total_donations FROM donors WHERE state = 'New York' GROUP BY name ORDER BY total_donations DESC LIMIT 5;
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Which warehouse has the highest inventory value for item 'Thingamajig'?
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CREATE TABLE Inventory (id INT,item VARCHAR(50),quantity INT,purchase_price DECIMAL(10,2)); INSERT INTO Inventory (id,item,quantity,purchase_price) VALUES (1,'Thingamajig',100,25.50),(2,'Doohickey',75,18.35);
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SELECT item, MAX(quantity * purchase_price) FROM Inventory WHERE item = 'Thingamajig' GROUP BY item;
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How many renewable energy projects were initiated in California in 2020?
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CREATE TABLE renewable_projects (state VARCHAR(20),year INT,num_projects INT); INSERT INTO renewable_projects (state,year,num_projects) VALUES ('California',2020,150),('California',2019,140),('California',2018,130),('Texas',2020,120),('Texas',2019,110);
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SELECT num_projects FROM renewable_projects WHERE state = 'California' AND year = 2020;
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What is the total volume of timber produced by countries in Europe?
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CREATE TABLE timber_production (country VARCHAR(255),volume INT); INSERT INTO timber_production (country,volume) VALUES ('Canada',1200),('USA',2000),('France',500),('Germany',700);
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SELECT SUM(volume) FROM timber_production WHERE country IN ('France', 'Germany');
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Find the average price of products that are not ethically sourced in the 'Product' table
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CREATE TABLE Product (product_id INT PRIMARY KEY,product_name VARCHAR(50),price DECIMAL(5,2),is_ethically_sourced BOOLEAN);
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SELECT AVG(price) FROM Product WHERE is_ethically_sourced = FALSE;
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What is the total number of autonomous vehicles in operation in Oslo?
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CREATE TABLE autonomous_vehicles (vehicle_id INT,vehicle_type VARCHAR(20)); INSERT INTO autonomous_vehicles (vehicle_id,vehicle_type) VALUES (1,'Car'),(2,'Truck'),(3,'Car'),(4,'Bus'),(5,'Car');
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SELECT COUNT(*) as num_vehicles FROM autonomous_vehicles WHERE vehicle_type IN ('Car', 'Truck', 'Bus');
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What is the total number of tourists visiting Switzerland in 2023?
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CREATE TABLE tourism_data (id INT,country VARCHAR(50),destination VARCHAR(50),arrival_date DATE,age INT); INSERT INTO tourism_data (id,country,destination,arrival_date,age) VALUES (8,'Brazil','Switzerland','2023-03-07',45),(9,'Argentina','Switzerland','2023-07-20',29);
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SELECT COUNT(*) FROM tourism_data WHERE destination = 'Switzerland' AND YEAR(arrival_date) = 2023;
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Find the total bioprocess engineering cost for each month in 2021.
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CREATE SCHEMA if not exists engineering; USE engineering; CREATE TABLE if not exists costs (id INT,date DATE,amount DECIMAL(10,2)); INSERT INTO costs (id,date,amount) VALUES (1,'2021-01-01',15000.00),(2,'2021-01-15',7000.00),(3,'2021-02-01',12000.00),(4,'2021-03-01',10000.00);
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SELECT MONTH(date) AS month, SUM(amount) AS total_cost FROM costs WHERE YEAR(date) = 2021 GROUP BY month;
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What is the total CO2 emissions reduction from all carbon offset programs in Canada?
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CREATE TABLE carbon_offsets_canada (id INT,name TEXT,country TEXT,co2_reduction INT); INSERT INTO carbon_offsets_canada (id,name,country,co2_reduction) VALUES (1,'The Gold Standard','Canada',50000),(2,'Verified Carbon Standard','Canada',75000);
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SELECT SUM(co2_reduction) FROM carbon_offsets_canada WHERE country = 'Canada';
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List the recycling rates for facility ID 1
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CREATE TABLE WasteTypes (waste_type_id INT PRIMARY KEY,name VARCHAR,description VARCHAR); CREATE TABLE Facilities (facility_id INT PRIMARY KEY,name VARCHAR,location VARCHAR,capacity INT,waste_type_id INT,FOREIGN KEY (waste_type_id) REFERENCES WasteTypes(waste_type_id)); CREATE TABLE RecyclingRates (rate_id INT PRIMARY KEY,facility_id INT,year INT,rate DECIMAL,FOREIGN KEY (facility_id) REFERENCES Facilities(facility_id)); INSERT INTO RecyclingRates (rate_id,facility_id,year,rate) VALUES (1,1,2018,0.75),(2,1,2019,0.78),(3,1,2020,0.81);
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SELECT year, rate FROM RecyclingRates WHERE facility_id = 1;
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What is the total installed capacity of solar energy projects, grouped by project location?
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CREATE TABLE RenewableEnergyProjects (id INT,project_type VARCHAR(50),project_location VARCHAR(50),installed_capacity FLOAT); INSERT INTO RenewableEnergyProjects (id,project_type,project_location,installed_capacity) VALUES (1,'Solar','NYC',1000.0),(2,'Wind','LA',1500.0),(3,'Solar','SF',1200.0);
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SELECT project_location, SUM(installed_capacity) FROM RenewableEnergyProjects WHERE project_type = 'Solar' GROUP BY project_location;
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What is the maximum revenue generated from a single sale in the 'footwear' category?
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CREATE TABLE sales (sale_id INT,product_id INT,category VARCHAR(20),revenue DECIMAL(5,2)); INSERT INTO sales (sale_id,product_id,category,revenue) VALUES (1,1,'footwear',200.00),(2,2,'footwear',150.00),(3,3,'footwear',250.00);
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SELECT MAX(revenue) FROM sales WHERE category = 'footwear';
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Update the country for volunteer 'Bob' to Canada.
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CREATE TABLE Volunteers (id INT,name VARCHAR(255),country VARCHAR(255)); INSERT INTO Volunteers (id,name,country) VALUES (1,'Alice','United States'),(2,'Bob','United States');
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UPDATE Volunteers SET country = 'Canada' WHERE name = 'Bob';
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Add a new faculty member to the faculty table
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CREATE TABLE faculty (id INT,name VARCHAR(50),department VARCHAR(50),rank VARCHAR(10));
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INSERT INTO faculty (id, name, department, rank) VALUES (101, 'Jane Smith', 'Mathematics', 'Assistant Professor');
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What is the maximum budget for any genetic research project?
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CREATE TABLE research_projects (id INT,name VARCHAR(50),budget FLOAT); INSERT INTO research_projects VALUES (1,'ProjectM',1000000); INSERT INTO research_projects VALUES (2,'ProjectN',1200000); INSERT INTO research_projects VALUES (3,'ProjectO',1500000);
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SELECT MAX(budget) FROM research_projects;
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What is the minimum water temperature in each month in 2021?
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CREATE TABLE temperature_records (id INT,date DATE,temperature FLOAT);
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SELECT EXTRACT(MONTH FROM date) AS month, MIN(temperature) FROM temperature_records WHERE date LIKE '2021-%' GROUP BY month;
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What is the total revenue of products sold in each state?
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CREATE TABLE Product_Revenue (product_id INT,revenue INT); INSERT INTO Product_Revenue (product_id,revenue) VALUES (1,100),(2,150),(3,200),(4,50),(5,300);
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SELECT S.state_name, SUM(Revenue) FROM Sales S JOIN Product_Revenue PR ON S.product_id = PR.product_id GROUP BY S.state_name;
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Update the timber_production table to set the annual_production to 1000 for 'Oregon'
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CREATE TABLE timber_production (id INT PRIMARY KEY,state TEXT,annual_production INT); INSERT INTO timber_production (id,state,annual_production) VALUES (1,'Oregon',900);
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UPDATE timber_production SET annual_production = 1000 WHERE state = 'Oregon';
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What's the average rating of movies produced by studios located in the US?
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CREATE TABLE Studios (studio_id INT,studio_name VARCHAR(255),country VARCHAR(255)); INSERT INTO Studios (studio_id,studio_name,country) VALUES (1,'Studio A','USA'),(2,'Studio B','USA'),(3,'Studio C','Canada'); CREATE TABLE Movies (movie_id INT,movie_name VARCHAR(255),studio_id INT,rating DECIMAL(3,2)); INSERT INTO Movies (movie_id,movie_name,studio_id,rating) VALUES (1,'Movie X',1,8.5),(2,'Movie Y',1,8.2),(3,'Movie Z',2,7.8),(4,'Movie W',3,6.9);
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SELECT AVG(m.rating) FROM Movies m JOIN Studios s ON m.studio_id = s.studio_id WHERE s.country = 'USA';
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What is the average monthly mobile data usage for customers in the 'urban' region?
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CREATE TABLE subscribers (id INT,region VARCHAR(10),monthly_data_usage DECIMAL(5,2)); INSERT INTO subscribers (id,region,monthly_data_usage) VALUES (1,'urban',3.5),(2,'rural',2.2);
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SELECT AVG(monthly_data_usage) FROM subscribers WHERE region = 'urban';
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What is the average rating of cruelty-free skincare products launched in 2021?
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CREATE TABLE skincare_products (product_id INT,name VARCHAR(255),launch_year INT,is_cruelty_free BOOLEAN,rating DECIMAL(2,1));
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SELECT AVG(rating) FROM skincare_products WHERE is_cruelty_free = TRUE AND launch_year = 2021;
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Identify the number of unique founders who have founded companies that have had at least one investment round.
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CREATE TABLE company (id INT,name TEXT,founder_id INT); INSERT INTO company (id,name,founder_id) VALUES (1,'Acme Inc',101),(2,'Beta Corp',102),(3,'Gamma PLC',103); CREATE TABLE investment (id INT,company_id INT); INSERT INTO investment (id,company_id) VALUES (1,1),(2,1),(3,2);
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SELECT COUNT(DISTINCT founder_id) FROM company WHERE id IN (SELECT company_id FROM investment)
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What was the recycling rate in percentage for the region 'Cairo' in 2020?
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CREATE TABLE recycling_rates (region VARCHAR(50),year INT,recycling_rate FLOAT); INSERT INTO recycling_rates (region,year,recycling_rate) VALUES ('Cairo',2020,45.67);
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SELECT recycling_rate FROM recycling_rates WHERE region = 'Cairo' AND year = 2020;
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How many events were held for each art form in 2021?
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CREATE TABLE Events (event_id INT,event_date DATE,art_form VARCHAR(50)); INSERT INTO Events (event_id,event_date,art_form) VALUES (1,'2021-01-01','Dance'),(2,'2021-02-01','Theater'),(3,'2021-03-01','Music'),(4,'2021-04-01','Art'),(5,'2021-05-01','Dance'),(6,'2021-06-01','Theater'),(7,'2021-07-01','Music'),(8,'2021-08-01','Art');
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SELECT art_form, COUNT(*) AS event_count FROM Events WHERE event_date BETWEEN '2021-01-01' AND '2021-12-31' GROUP BY art_form;
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Calculate the total distance covered in miles by users in outdoor workouts.
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CREATE TABLE OutdoorWorkouts (UserID INT,Distance FLOAT,WorkoutLocation VARCHAR(20)); INSERT INTO OutdoorWorkouts (UserID,Distance,WorkoutLocation) VALUES (1,4.2,'Park'),(1,3.5,'Street'),(2,5.1,'Trail'),(3,6.0,'Beach');
|
SELECT SUM(Distance) FROM OutdoorWorkouts WHERE WorkoutLocation IN ('Park', 'Street', 'Trail', 'Beach');
|
What is the most common mental health score in each district?
|
CREATE TABLE student_mental_health (student_id INT,district_id INT,mental_health_score INT,date DATE); CREATE TABLE districts (district_id INT,district_name VARCHAR(100));
|
SELECT d.district_name, mental_health_score as most_common_score FROM districts d JOIN (SELECT district_id, mental_health_score, COUNT(*) as count FROM student_mental_health GROUP BY district_id, mental_health_score) smh ON d.district_id = smh.district_id WHERE smh.count = (SELECT MAX(count) FROM (SELECT district_id, mental_health_score, COUNT(*) as count FROM student_mental_health GROUP BY district_id, mental_health_score) smh2 WHERE smh2.district_id = smh.district_id);
|
What is the maximum number of passengers an aircraft can carry?
|
CREATE TABLE Aircraft (aircraft_id INT,model VARCHAR(50),passengers INT); INSERT INTO Aircraft (aircraft_id,model,passengers) VALUES (1,'B747',416),(2,'A380',525),(3,'B777',396);
|
SELECT MAX(passengers) FROM Aircraft;
|
Which community projects in Brazil have the highest budget?
|
CREATE TABLE community_projects (id INT,name VARCHAR(100),budget INT,country VARCHAR(50)); INSERT INTO community_projects (id,name,budget,country) VALUES (1,'Projeto X',50000,'Brazil');
|
SELECT name, budget FROM community_projects WHERE country = 'Brazil' AND budget = (SELECT MAX(budget) FROM community_projects WHERE country = 'Brazil')
|
Show the number of athletes from each team in the 'Northern Division'
|
CREATE TABLE division_info (team VARCHAR(255),division VARCHAR(255)); INSERT INTO division_info (team,division) VALUES ('TeamC','Northern Division'),('TeamD','Southern Division');
|
SELECT a.team, COUNT(a.athlete_id) FROM athlete_stats a INNER JOIN division_info d ON a.team = d.team WHERE d.division = 'Northern Division' GROUP BY a.team;
|
How many building permits were issued per month in New York between 2020 and 2022?
|
CREATE TABLE Permits_NY (permit_id INT,permit_date DATE); INSERT INTO Permits_NY (permit_id,permit_date) VALUES (1,'2020-01-01'),(2,'2020-02-01'),(3,'2022-03-01');
|
SELECT permit_date, COUNT(*) OVER (PARTITION BY EXTRACT(YEAR FROM permit_date)) AS permits_per_year FROM Permits_NY WHERE permit_date >= '2020-01-01' AND permit_date < '2023-01-01' ORDER BY permit_date;
|
What is the minimum soil moisture (%) in corn fields in India in the past month?
|
CREATE TABLE soil_moisture (moisture DECIMAL(3,1),reading_date DATE,location TEXT); INSERT INTO soil_moisture (moisture,reading_date,location) VALUES (42.5,'2021-07-01','India'),(45.3,'2021-07-02','India'),(39.2,'2021-04-01','India');
|
SELECT MIN(moisture) FROM soil_moisture WHERE location = 'India' AND reading_date > DATE_SUB(CURDATE(), INTERVAL 1 MONTH) AND location LIKE '%corn%';
|
What is the average ticket price for events in Paris, France?
|
CREATE TABLE Events (id INT,city VARCHAR(20),country VARCHAR(20),price DECIMAL(5,2)); INSERT INTO Events (id,city,country,price) VALUES (1,'Paris','France',25.50),(2,'London','UK',30.00);
|
SELECT AVG(price) FROM Events WHERE city = 'Paris' AND country = 'France';
|
What is the total number of electric vehicles sold in the world?
|
CREATE TABLE if not exists EVSales (Id int,Vehicle varchar(100),City varchar(100),Country varchar(50),Quantity int); INSERT INTO EVSales (Id,Vehicle,City,Country,Quantity) VALUES (1,'Tesla Model 3','Tokyo','Japan',1000),(2,'Nissan Leaf','Yokohama','Japan',800),(3,'Mitsubishi i-MiEV','Osaka','Japan',1200),(4,'Toyota Prius','Nagoya','Japan',600),(5,'Honda Fit','Sapporo','Japan',900),(6,'Audi e-Tron','Berlin','Germany',700),(7,'Renault Zoe','Paris','France',1100),(8,'BYD e6','Beijing','China',1500),(9,'Ford Mustang Mach-E','New York','USA',1300),(10,'Volvo XC40 Recharge','Stockholm','Sweden',800);
|
SELECT SUM(Quantity) FROM EVSales WHERE Country != '';
|
List all the international calls made by a subscriber with the subscriber_id of 5 and the call duration, along with the international call charges.
|
CREATE TABLE subscribers (subscriber_id INT,name VARCHAR(50)); INSERT INTO subscribers (subscriber_id,name) VALUES (1,'John Doe'),(2,'Jane Smith'),(3,'Bob Johnson'),(5,'Alice Davis'); CREATE TABLE international_calls (call_id INT,subscriber_id INT,call_duration INT,call_charge DECIMAL(10,2)); INSERT INTO international_calls (call_id,subscriber_id,call_duration,call_charge) VALUES (1,5,30,1.25),(2,5,45,1.85),(3,2,20,1.10);
|
SELECT i.subscriber_id, i.call_duration, i.call_charge FROM subscribers s JOIN international_calls i ON s.subscriber_id = i.subscriber_id WHERE s.subscriber_id = 5;
|
Which indigenous food systems have the highest crop diversity?
|
CREATE TABLE Region (id INT,name VARCHAR(255)); INSERT INTO Region (id,name) VALUES (1,'Amazonia'),(2,'Central America'),(3,'Andes'); CREATE TABLE Crop (id INT,name VARCHAR(255),region_id INT); INSERT INTO Crop (id,name,region_id) VALUES (1,'Yuca',1),(2,'Corn',2),(3,'Potato',3),(4,'Quinoa',3);
|
SELECT Region.name, COUNT(DISTINCT Crop.name) FROM Region INNER JOIN Crop ON Region.id = Crop.region_id GROUP BY Region.name ORDER BY COUNT(DISTINCT Crop.name) DESC;
|
What is the average daily production of oil from wells owned by Chevron in the Marcellus Shale?
|
CREATE TABLE well_production (well_id INT,company VARCHAR(255),basin VARCHAR(255),daily_production INT); INSERT INTO well_production (well_id,company,basin,daily_production) VALUES (1,'Chevron','Marcellus Shale',100); INSERT INTO well_production (well_id,company,basin,daily_production) VALUES (2,'Chevron','Marcellus Shale',120); INSERT INTO well_production (well_id,company,basin,daily_production) VALUES (3,'Chevron','Bakken Formation',150);
|
SELECT AVG(daily_production) FROM well_production WHERE company = 'Chevron' AND basin = 'Marcellus Shale';
|
What is the number of donors who increased their donation amount from 2021 to 2022?
|
CREATE TABLE donations (id INT,donor VARCHAR(50),amount DECIMAL(10,2),donation_date DATE,year INT); INSERT INTO donations (id,donor,amount,donation_date,year) VALUES (1,'Sophia Lee',250,'2022-02-14',2022); INSERT INTO donations (id,donor,amount,donation_date,year) VALUES (2,'Ali Al-Khaleej',400,'2022-07-03',2022); INSERT INTO donations (id,donor,amount,donation_date,year) VALUES (3,'Sophia Lee',200,'2021-02-14',2021); INSERT INTO donations (id,donor,amount,donation_date,year) VALUES (4,'Ali Al-Khaleej',300,'2021-07-03',2021);
|
SELECT COUNT(DISTINCT donor) as increased_donor_count FROM donations d1 INNER JOIN donations d2 ON d1.donor = d2.donor WHERE d1.year = 2022 AND d2.year = 2021 AND d1.amount > d2.amount;
|
Identify the top three crops by acreage in 'urban' farming communities.
|
CREATE TABLE urban_community_farms AS SELECT f.name AS farmer_name,c.crop_name,c.acres FROM farmers f JOIN crops c ON f.id = c.farmer_id JOIN farm_communities fr ON f.id = fr.farm_id WHERE fr.community = 'urban'; INSERT INTO urban_community_farms (farmer_name,crop_name,acres) VALUES ('Jane','maize',50),('Alice','carrot',75),('Bob','soybean',100),('Jane','carrot',25);
|
SELECT crop_name, SUM(acres) AS total_acres FROM urban_community_farms GROUP BY crop_name ORDER BY total_acres DESC LIMIT 3;
|
What is the total number of employees in each mine?
|
CREATE TABLE mines (id INT,name TEXT,location TEXT,total_employees INT); INSERT INTO mines (id,name,location,total_employees) VALUES (1,'Golden Mine','Colorado,USA',300),(2,'Silver Ridge','Nevada,USA',400),(3,'Bronze Basin','Utah,USA',500);
|
SELECT name, SUM(total_employees) FROM mines GROUP BY name
|
Which circular economy initiatives have been implemented in Europe?
|
CREATE TABLE CircularEconomy(id INT,initiative VARCHAR(50),region VARCHAR(50)); INSERT INTO CircularEconomy(id,initiative,region) VALUES (1,'Clothing Swap Events','France'),(2,'Repair Cafes','Germany'),(3,'E-Waste Recycling Programs','Spain');
|
SELECT initiative, region FROM CircularEconomy WHERE region = 'Europe';
|
What was the total REE production for each quarter in 2020?
|
CREATE TABLE mines (id INT,name TEXT,location TEXT,quarter INT,annual_production INT); INSERT INTO mines (id,name,location,quarter,annual_production) VALUES (1,'Mine A','Country X',1,375),(2,'Mine B','Country Y',1,500),(3,'Mine C','Country Z',1,437),(1,'Mine A','Country X',2,400),(2,'Mine B','Country Y',2,500),(3,'Mine C','Country Z',2,437),(1,'Mine A','Country X',3,425),(2,'Mine B','Country Y',3,500),(3,'Mine C','Country Z',3,462),(1,'Mine A','Country X',4,375),(2,'Mine B','Country Y',4,500),(3,'Mine C','Country Z',4,463);
|
SELECT YEAR(timestamp) as year, QUARTER(timestamp) as quarter, SUM(annual_production) as total_production FROM mines WHERE YEAR(timestamp) = 2020 GROUP BY year, quarter;
|
Insert a new product into the "products" table
|
CREATE TABLE products (product_id INT,name VARCHAR(255),category VARCHAR(255),price DECIMAL(5,2));
|
INSERT INTO products (product_id, name, category, price) VALUES (1001, 'Organic Cotton Shirt', 'Clothing', 35.99);
|
Count the number of gas wells in North Dakota and Montana and their total daily production
|
CREATE TABLE gas_wells (well_id INT,state VARCHAR(10),daily_production FLOAT); INSERT INTO gas_wells (well_id,state,daily_production) VALUES (1,'North Dakota',120.5),(2,'North Dakota',130.2),(3,'Montana',105.6);
|
SELECT state, COUNT(*), SUM(daily_production) FROM gas_wells WHERE state IN ('North Dakota', 'Montana') GROUP BY state;
|
What was the average donation amount per donor in Q3 2022?
|
CREATE TABLE donors (donor_id INT,donation_date DATE,donation_amount DECIMAL(10,2)); INSERT INTO donors VALUES (8,'2022-09-01',100.00),(9,'2022-10-15',200.00),(10,'2022-11-05',300.00);
|
SELECT AVG(donation_amount) FROM donors WHERE donation_date BETWEEN '2022-07-01' AND '2022-09-30' GROUP BY donor_id HAVING COUNT(*) > 0;
|
What is the minimum maintenance cost for military vehicles?
|
CREATE TABLE military_vehicles (id INT,model VARCHAR(50),maintenance_cost FLOAT); INSERT INTO military_vehicles (id,model,maintenance_cost) VALUES (1,'HMMWV',12000),(2,'Stryker',18000),(3,'Tank',25000);
|
SELECT MIN(maintenance_cost) FROM military_vehicles;
|
What is the total funding received by companies founded by Black entrepreneurs in the renewable energy sector?
|
CREATE TABLE companies (company_id INT,company_name TEXT,industry TEXT,founding_year INT,founder_race TEXT); INSERT INTO companies (company_id,company_name,industry,founding_year,founder_race) VALUES (1,'SolarForce','Renewable Energy',2015,'Black'); CREATE TABLE funding_records (funding_id INT,company_id INT,amount INT); INSERT INTO funding_records (funding_id,company_id,amount) VALUES (1,1,1200000);
|
SELECT SUM(fr.amount) FROM companies c JOIN funding_records fr ON c.company_id = fr.company_id WHERE c.industry = 'Renewable Energy' AND c.founder_race = 'Black';
|
List all oceanographic studies in 'Atlantic Ocean' since 2010.
|
CREATE TABLE if not exists oceanographic_studies (id INT,name TEXT,location TEXT,year INT);
|
SELECT * FROM oceanographic_studies WHERE location = 'Atlantic Ocean' AND year >= 2010;
|
Update the cargo_tracking table and set the status as 'Delivered' for records where the destination_port is 'Tokyo'
|
CREATE TABLE cargo_tracking (voyage_date DATE,departure_port VARCHAR(255),destination_port VARCHAR(255),cargo_weight INT,vessel_name VARCHAR(255),status VARCHAR(255));
|
UPDATE cargo_tracking SET status = 'Delivered' WHERE destination_port = 'Tokyo';
|
What is the total square footage of sustainable buildings in New York City?
|
CREATE TABLE sustainable_buildings (city VARCHAR(255),total_sqft INTEGER,sustainable BOOLEAN); INSERT INTO sustainable_buildings (city,total_sqft,sustainable) VALUES ('New York City',5000000,true),('New York City',3000000,false),('Los Angeles',4000000,true);
|
SELECT SUM(total_sqft) FROM sustainable_buildings WHERE city = 'New York City' AND sustainable = true;
|
What is the average age of users who attended events in the "Dance" category?
|
CREATE TABLE Users (UserID INT,Age INT,Category VARCHAR(50)); INSERT INTO Users (UserID,Age,Category) VALUES (1,30,'Dance'),(2,25,'Music'); CREATE TABLE Events (EventID INT,Category VARCHAR(50)); INSERT INTO Events (EventID,Category) VALUES (1,'Dance'),(2,'Music');
|
SELECT AVG(Users.Age) AS AverageAge FROM Users INNER JOIN Events ON Users.Category = Events.Category WHERE Events.Category = 'Dance';
|
How many workers in each factory are not paid a living wage?
|
CREATE TABLE factories (id INT,name VARCHAR(255),workers INT,living_wage_workers INT); INSERT INTO factories (id,name,workers,living_wage_workers) VALUES (1,'EthicalFactory1',500,450),(2,'EthicalFactory2',300,280),(3,'EthicalFactory3',400,360),(4,'EthicalFactory4',600,540),(5,'EthicalFactory5',700,630);
|
SELECT name, (workers - living_wage_workers) AS non_living_wage_workers FROM factories;
|
Insert a new donation record for donor 5 with a donation amount of 800 on 2021-05-01.
|
CREATE TABLE Donations (donor_id INT,donation_amount DECIMAL(10,2),donation_date DATE);
|
INSERT INTO Donations (donor_id, donation_amount, donation_date) VALUES (5, 800, '2021-05-01');
|
How many pollution control initiatives are there in each region?
|
CREATE TABLE pollution_control_initiatives (id INT,initiative TEXT,region TEXT); INSERT INTO pollution_control_initiatives (id,initiative,region) VALUES (1,'Initiative X','North Atlantic'),(2,'Initiative Y','Arctic'),(3,'Initiative Z','North Atlantic'),(4,'Initiative W','Indian Ocean');
|
SELECT region, COUNT(*) FROM pollution_control_initiatives GROUP BY region;
|
What is the maximum and minimum serving size for dishes in the 'Vegan' cuisine category?
|
CREATE TABLE Dishes (id INT,cuisine VARCHAR(255),serving_size INT); INSERT INTO Dishes (id,cuisine,serving_size) VALUES (1,'Vegan',300),(2,'Vegan',450),(3,'Vegan',200),(4,'Italian',500);
|
SELECT cuisine, MIN(serving_size) as min_serving_size, MAX(serving_size) as max_serving_size FROM Dishes WHERE cuisine = 'Vegan' GROUP BY cuisine;
|
Find the number of defense diplomacy events where 'country A' was involved in the last 3 years
|
CREATE TABLE defense_diplomacy (country VARCHAR(50),event_date DATE);
|
SELECT COUNT(*) FROM defense_diplomacy WHERE country = 'country A' AND event_date >= DATE(CURRENT_DATE) - INTERVAL 3 YEAR;
|
Delete all cases with a billing amount of $0.
|
CREATE TABLE cases (case_id INT,billing_amount INT); INSERT INTO cases (case_id,billing_amount) VALUES (1,5000),(2,0),(3,4000);
|
DELETE FROM cases WHERE billing_amount = 0;
|
What is the number of employees who have completed diversity and inclusion training, by department?
|
CREATE TABLE departments (dept_id INT,dept_name TEXT); INSERT INTO departments (dept_id,dept_name) VALUES (1,'HR'),(2,'IT'),(3,'Sales'); CREATE TABLE employees (employee_id INT,name TEXT,dept_id INT,diversity_inclusion_training BOOLEAN); INSERT INTO employees (employee_id,name,dept_id,diversity_inclusion_training) VALUES (1,'Alice',1,TRUE),(2,'Bob',2,FALSE),(3,'Charlie',1,TRUE),(4,'Dave',2,TRUE),(5,'Eve',1,FALSE);
|
SELECT dept_name, SUM(CASE WHEN diversity_inclusion_training THEN 1 ELSE 0 END) AS num_trained FROM employees JOIN departments ON employees.dept_id = departments.dept_id GROUP BY dept_name;
|
What is the total runtime (in minutes) of all the movies and TV shows in the media table?
|
CREATE TABLE media (id INT,title TEXT,type TEXT,runtime INT);
|
SELECT SUM(runtime) FROM media WHERE type = 'movie' UNION SELECT SUM(runtime) FROM media WHERE type = 'tv_show';
|
How many unique donors made donations in each region in 2021, and what was the total donation amount per region for the year?
|
CREATE TABLE Donors (DonorID INT,DonorName TEXT,DonorRegion TEXT,DonationAmount FLOAT,DonationDate DATE); INSERT INTO Donors (DonorID,DonorName,DonorRegion,DonationAmount,DonationDate) VALUES (1,'John Doe','North',500.00,'2021-01-01'),(2,'Jane Smith','South',350.00,'2021-02-14'),(3,'Bob Johnson','East',1000.00,'2021-12-31'),(4,'Alice Williams','North',200.00,'2021-03-15');
|
SELECT DonorRegion, COUNT(DISTINCT DonorID) as UniqueDonors, SUM(DonationAmount) as TotalDonationPerYear FROM Donors WHERE YEAR(DonationDate) = 2021 GROUP BY DonorRegion;
|
Identify the peacekeeping operations where the African Union is the lead organization
|
CREATE TABLE peacekeeping_operations (id INT,operation_name VARCHAR(255),lead_organization VARCHAR(255),start_date DATE); INSERT INTO peacekeeping_operations (id,operation_name,lead_organization,start_date) VALUES (1,'AMISOM','African Union','2007-01-19'),(2,'MINUSMA','United Nations','2013-07-25');
|
SELECT * FROM peacekeeping_operations WHERE lead_organization = 'African Union';
|
Insert new records for 5 employees who joined the mining department in January 2022.
|
CREATE TABLE Employees (employee_id INT,name VARCHAR(50),gender VARCHAR(10),department VARCHAR(20),hire_date DATE); INSERT INTO Employees (employee_id,name,gender,department,hire_date) VALUES (1,'John Doe','Male','Mining','2020-01-01'),(2,'Jane Smith','Female','Mining','2019-06-15');
|
INSERT INTO Employees (employee_id, name, gender, department, hire_date) VALUES (4, 'Bruce Wayne', 'Male', 'Mining', '2022-01-05'), (5, 'Clark Kent', 'Male', 'Mining', '2022-01-10'), (6, 'Diana Prince', 'Female', 'Mining', '2022-01-12'), (7, 'Peter Parker', 'Male', 'Mining', '2022-01-15'), (8, 'Natasha Romanoff', 'Female', 'Mining', '2022-01-20');
|
Calculate the average range of vehicles grouped by type in the 'green_vehicles' table
|
CREATE TABLE green_vehicles (id INT PRIMARY KEY,make VARCHAR(50),model VARCHAR(50),year INT,type VARCHAR(50),range INT);
|
SELECT type, AVG(range) FROM green_vehicles GROUP BY type;
|
What is the maximum daily production rate of oil wells in the Arctic Ocean that were drilled after 2016?
|
CREATE TABLE arctic_ocean (id INT,well_name VARCHAR(255),drill_date DATE,daily_production_oil FLOAT);
|
SELECT MAX(daily_production_oil) as max_daily_production_oil FROM arctic_ocean WHERE drill_date > '2016-12-31';
|
Insert new records for the rare earth elements promethium and samarium into the environmental_impact table
|
CREATE TABLE environmental_impact (id INT PRIMARY KEY,element VARCHAR(10),impact_score INT);
|
INSERT INTO environmental_impact (element, impact_score) VALUES ('promethium', 7), ('samarium', 6);
|
What is the difference between the maximum performance score of models trained on dataset A and dataset B, for each region?
|
CREATE TABLE models (id INT,dataset VARCHAR(20),performance FLOAT,region VARCHAR(20)); INSERT INTO models VALUES (1,'datasetA',4.3,'Europe'),(2,'datasetA',4.5,'Asia'),(3,'datasetB',3.9,'Africa'),(4,'datasetB',4.1,'Africa'),(5,'datasetA',4.2,'North America');
|
SELECT region, MAX(m.performance) - (SELECT MAX(performance) FROM models m2 WHERE m.region = m2.region AND m2.dataset = 'datasetB') FROM models m WHERE m.dataset = 'datasetA' GROUP BY region;
|
Calculate the average monthly water consumption per capita in the city of Austin
|
CREATE TABLE city (id INT,name VARCHAR(255)); INSERT INTO city (id,name) VALUES (1,'Austin'); CREATE TABLE water_meter_readings (id INT,city_id INT,consumption FLOAT,reading_date DATE); INSERT INTO water_meter_readings (id,city_id,consumption,reading_date) VALUES (1,1,100,'2022-01-01'); INSERT INTO water_meter_readings (id,city_id,consumption,reading_date) VALUES (2,1,120,'2022-02-01');
|
SELECT AVG(consumption / population) FROM (SELECT water_meter_readings.consumption, city.population, EXTRACT(MONTH FROM water_meter_readings.reading_date) as month FROM water_meter_readings JOIN city ON water_meter_readings.city_id = city.id WHERE city.name = 'Austin') as subquery GROUP BY month;
|
Delete wells that have gas production less than 5000 in 2020?
|
CREATE TABLE well (well_id INT,well_name TEXT,gas_production_2020 FLOAT); INSERT INTO well (well_id,well_name,gas_production_2020) VALUES (1,'Well A',9000),(2,'Well B',11000),(3,'Well C',8000);
|
DELETE FROM well WHERE gas_production_2020 < 5000;
|
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