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How many heads of the departments are older than 56 ?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT COUNT_BIG(*) FROM head WHERE age > 56
List the name, born state and age of the heads of departments ordered by age.
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT name, born_state, age FROM head ORDER BY CASE WHEN age IS NULL THEN 1 ELSE 0 END, age
List the creation year, name and budget of each department.
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT creation, name, budget_in_billions FROM department
What are the maximum and minimum budget of the departments?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT MAX(budget_in_billions), MIN(budget_in_billions) FROM department
What is the average number of employees of the departments whose rank is between 10 and 15?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT AVG(num_employees) FROM department WHERE ranking BETWEEN 10 AND 15
What are the names of the heads who are born outside the California state?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT name FROM head WHERE born_state <> 'California'
What are the distinct creation years of the departments managed by a secretary born in state 'Alabama'?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT DISTINCT T1.creation FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T3.born_state = 'Alabama'
What are the names of the states where at least 3 heads were born?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT born_state FROM head GROUP BY born_state HAVING COUNT_BIG(*) >= 3
In which year were most departments established?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT TOP 1 creation FROM department GROUP BY creation ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
Show the name and number of employees for the departments managed by heads whose temporary acting value is 'Yes'?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT T1.name, T1.num_employees FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id WHERE T2.temporary_acting = 'Yes'
How many acting statuses are there?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT COUNT_BIG(DISTINCT temporary_acting) FROM management
How many departments are led by heads who are not mentioned?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT COUNT_BIG(*) FROM department WHERE NOT department_id IN (SELECT department_id FROM management)
What are the distinct ages of the heads who are acting?
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT DISTINCT T1.age FROM management AS T2 JOIN head AS T1 ON T1.head_id = T2.head_id WHERE T2.temporary_acting = 'Yes'
List the states where both the secretary of 'Treasury' department and the secretary of 'Homeland Security' were born.
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT T3.born_state FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T1.name = 'Treasury' INTERSECT SELECT T3.born_state FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = ...
Which department has more than 1 head at a time? List the id, name and the number of heads.
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT T1.department_id, T1.name, COUNT_BIG(*) FROM management AS T2 JOIN department AS T1 ON T1.department_id = T2.department_id GROUP BY T1.department_id HAVING COUNT_BIG(*) > 1
Which head's name has the substring 'Ha'? List the id and name.
-- Tables de la base de données (T-SQL) -- TABLE [department] ( [department id] INT, [name] NVARCHAR(MAX), [creation] NVARCHAR(MAX), [ranking] INT, [budget in billions] INT, [num employees] INT ); TABLE [head] ( [head id] INT, [name] NVARCHAR(MAX), [born state] NVARCHAR(MAX), [a...
SELECT head_id, name FROM head WHERE name LIKE '%Ha%'
How many farms are there?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT COUNT_BIG(*) FROM farm
Count the number of farms.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT COUNT_BIG(*) FROM farm
List the total number of horses on farms in ascending order.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Total_Horses FROM farm ORDER BY CASE WHEN Total_Horses IS NULL THEN 1 ELSE 0 END, Total_Horses ASC
What is the total horses record for each farm, sorted ascending?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Total_Horses FROM farm ORDER BY CASE WHEN Total_Horses IS NULL THEN 1 ELSE 0 END, Total_Horses ASC
What are the hosts of competitions whose theme is not "Aliens"?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Hosts FROM farm_competition WHERE Theme <> 'Aliens'
Return the hosts of competitions for which the theme is not Aliens?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Hosts FROM farm_competition WHERE Theme <> 'Aliens'
What are the themes of farm competitions sorted by year in ascending order?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Theme FROM farm_competition ORDER BY CASE WHEN YEAR IS NULL THEN 1 ELSE 0 END, YEAR ASC
Return the themes of farm competitions, sorted by year ascending.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Theme FROM farm_competition ORDER BY CASE WHEN YEAR IS NULL THEN 1 ELSE 0 END, YEAR ASC
What is the average number of working horses of farms with more than 5000 total number of horses?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT AVG(Working_Horses) FROM farm WHERE Total_Horses > 5000
Give the average number of working horses on farms with more than 5000 total horses.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT AVG(Working_Horses) FROM farm WHERE Total_Horses > 5000
What are the maximum and minimum number of cows across all farms.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT MAX(Cows), MIN(Cows) FROM farm
Return the maximum and minimum number of cows across all farms.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT MAX(Cows), MIN(Cows) FROM farm
How many different statuses do cities have?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT COUNT_BIG(DISTINCT Status) FROM city
Count the number of different statuses.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT COUNT_BIG(DISTINCT Status) FROM city
List official names of cities in descending order of population.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Official_Name FROM city ORDER BY CASE WHEN Population IS NULL THEN 1 ELSE 0 END DESC, Population DESC
What are the official names of cities, ordered descending by population?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Official_Name FROM city ORDER BY CASE WHEN Population IS NULL THEN 1 ELSE 0 END DESC, Population DESC
List the official name and status of the city with the largest population.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT TOP 1 Official_Name, Status FROM city ORDER BY CASE WHEN Population IS NULL THEN 1 ELSE 0 END DESC, Population DESC
What is the official name and status of the city with the most residents?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT TOP 1 Official_Name, Status FROM city ORDER BY CASE WHEN Population IS NULL THEN 1 ELSE 0 END DESC, Population DESC
Show the years and the official names of the host cities of competitions.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT T2.Year, T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID
Give the years and official names of the cities of each competition.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT T2.Year, T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID
Show the official names of the cities that have hosted more than one competition.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID HAVING COUNT_BIG(*) > 1
What are the official names of cities that have hosted more than one competition?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID HAVING COUNT_BIG(*) > 1
Show the status of the city that has hosted the greatest number of competitions.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT TOP 1 T1.Status FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
What is the status of the city that has hosted the most competitions?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT TOP 1 T1.Status FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
Please show the themes of competitions with host cities having populations larger than 1000.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT T2.Theme FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID WHERE T1.Population > 1000
What are the themes of competitions that have corresponding host cities with more than 1000 residents?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT T2.Theme FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID WHERE T1.Population > 1000
Please show the different statuses of cities and the average population of cities with each status.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Status, AVG(Population) FROM city GROUP BY Status
What are the statuses and average populations of each city?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Status, AVG(Population) FROM city GROUP BY Status
Please show the different statuses, ordered by the number of cities that have each.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Status FROM city GROUP BY Status ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END, COUNT_BIG(*) ASC
Return the different statuses of cities, ascending by frequency.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Status FROM city GROUP BY Status ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END, COUNT_BIG(*) ASC
List the most common type of Status across cities.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT TOP 1 Status FROM city GROUP BY Status ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
What is the most common status across all cities?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT TOP 1 Status FROM city GROUP BY Status ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
List the official names of cities that have not held any competition.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Official_Name FROM city WHERE NOT City_ID IN (SELECT Host_city_ID FROM farm_competition)
What are the official names of cities that have not hosted a farm competition?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Official_Name FROM city WHERE NOT City_ID IN (SELECT Host_city_ID FROM farm_competition)
Show the status shared by cities with population bigger than 1500 and smaller than 500.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Status FROM city WHERE Population > 1500 INTERSECT SELECT Status FROM city WHERE Population < 500
Which statuses correspond to both cities that have a population over 1500 and cities that have a population lower than 500?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Status FROM city WHERE Population > 1500 INTERSECT SELECT Status FROM city WHERE Population < 500
Find the official names of cities with population bigger than 1500 or smaller than 500.
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Official_Name FROM city WHERE Population > 1500 OR Population < 500
What are the official names of cities that have population over 1500 or less than 500?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Official_Name FROM city WHERE Population > 1500 OR Population < 500
Show the census ranking of cities whose status are not "Village".
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Census_Ranking FROM city WHERE Status <> [Village]
What are the census rankings of cities that do not have the status "Village"?
-- Tables de la base de données (T-SQL) -- TABLE [city] ( [city id] INT, [official name] NVARCHAR(MAX), [status] NVARCHAR(MAX), [area km 2] INT, [population] INT, [census ranking] NVARCHAR(MAX) ); TABLE [farm] ( [farm id] INT, [year] INT, [total horses] INT, [working horses] INT...
SELECT Census_Ranking FROM city WHERE Status <> [Village]
which course has most number of registered students?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 T1.course_name FROM courses AS T1 JOIN student_course_registrations AS T2 ON T1.course_id = T2.course_Id GROUP BY T1.course_id ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
What is the name of the course with the most registered students?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 T1.course_name FROM courses AS T1 JOIN student_course_registrations AS T2 ON T1.course_id = T2.course_Id GROUP BY T1.course_id ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
what is id of students who registered some courses but the least number of courses in these students?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 student_id FROM student_course_registrations GROUP BY student_id ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END, COUNT_BIG(*)
What are the ids of the students who registered for some courses but had the least number of courses for all students?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 student_id FROM student_course_registrations GROUP BY student_id ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END, COUNT_BIG(*)
what are the first name and last name of all candidates?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T2.first_name, T2.last_name FROM candidates AS T1 JOIN people AS T2 ON T1.candidate_id = T2.person_id
What are the first and last names of all the candidates?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T2.first_name, T2.last_name FROM candidates AS T1 JOIN people AS T2 ON T1.candidate_id = T2.person_id
List the id of students who never attends courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT student_id FROM students WHERE NOT student_id IN (SELECT student_id FROM student_course_attendance)
What are the ids of every student who has never attended a course?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT student_id FROM students WHERE NOT student_id IN (SELECT student_id FROM student_course_attendance)
List the id of students who attended some courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT student_id FROM student_course_attendance
What are the ids of all students who have attended at least one course?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT student_id FROM student_course_attendance
What are the ids of all students for courses and what are the names of those courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T1.student_id, T2.course_name FROM student_course_registrations AS T1 JOIN courses AS T2 ON T1.course_id = T2.course_id
What is detail of the student who most recently registered course?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 T2.student_details FROM student_course_registrations AS T1 JOIN students AS T2 ON T1.student_id = T2.student_id ORDER BY CASE WHEN T1.registration_date IS NULL THEN 1 ELSE 0 END DESC, T1.registration_date DESC
What details do we have on the students who registered for courses most recently?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 T2.student_details FROM student_course_registrations AS T1 JOIN students AS T2 ON T1.student_id = T2.student_id ORDER BY CASE WHEN T1.registration_date IS NULL THEN 1 ELSE 0 END DESC, T1.registration_date DESC
How many students attend course English?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT COUNT_BIG(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T1.course_name = [English]
How many students are attending English courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT COUNT_BIG(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T1.course_name = [English]
How many courses do the student whose id is 171 attend?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT COUNT_BIG(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T2.student_id = 171
How many courses does the student with id 171 actually attend?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT COUNT_BIG(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T2.student_id = 171
Find id of the candidate whose email is stanley.monahan@example.org?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T2.candidate_id FROM people AS T1 JOIN candidates AS T2 ON T1.person_id = T2.candidate_id WHERE T1.email_address = [stanley.monahan@example.org]
What is the id of the candidate whose email is stanley.monahan@example.org?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T2.candidate_id FROM people AS T1 JOIN candidates AS T2 ON T1.person_id = T2.candidate_id WHERE T1.email_address = [stanley.monahan@example.org]
Find id of the candidate who most recently accessed the course?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 candidate_id FROM candidate_assessments ORDER BY CASE WHEN assessment_date IS NULL THEN 1 ELSE 0 END DESC, assessment_date DESC
What is the id of the candidate who most recently accessed the course?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 candidate_id FROM candidate_assessments ORDER BY CASE WHEN assessment_date IS NULL THEN 1 ELSE 0 END DESC, assessment_date DESC
What is detail of the student who registered the most number of courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 T1.student_details FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
What are the details of the student who registered for the most number of courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 T1.student_details FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id ORDER BY CASE WHEN COUNT_BIG(*) IS NULL THEN 1 ELSE 0 END DESC, COUNT_BIG(*) DESC
List the id of students who registered some courses and the number of their registered courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T1.student_id, COUNT_BIG(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id
For every student who is registered for some course, how many courses are they registered for?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T1.student_id, COUNT_BIG(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id
How many registed students do each course have? List course name and the number of their registered students?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T3.course_name, COUNT_BIG(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id JOIN courses AS T3 ON T2.course_id = T3.course_id GROUP BY T2.course_id
For each course id, how many students are registered and what are the course names?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T3.course_name, COUNT_BIG(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id JOIN courses AS T3 ON T2.course_id = T3.course_id GROUP BY T2.course_id
Find id of candidates whose assessment code is "Pass"?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT candidate_id FROM candidate_assessments WHERE asessment_outcome_code = [Pass]
What are the ids of the candidates that have an outcome code of Pass?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT candidate_id FROM candidate_assessments WHERE asessment_outcome_code = [Pass]
Find the cell mobile number of the candidates whose assessment code is "Fail"?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T3.cell_mobile_number FROM candidates AS T1 JOIN candidate_assessments AS T2 ON T1.candidate_id = T2.candidate_id JOIN people AS T3 ON T1.candidate_id = T3.person_id WHERE T2.asessment_outcome_code = [Fail]
What are the cell phone numbers of the candidates that received an assessment code of "Fail"?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT T3.cell_mobile_number FROM candidates AS T1 JOIN candidate_assessments AS T2 ON T1.candidate_id = T2.candidate_id JOIN people AS T3 ON T1.candidate_id = T3.person_id WHERE T2.asessment_outcome_code = [Fail]
What are the id of students who registered course 301?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT student_id FROM student_course_attendance WHERE course_id = 301
What are the ids of the students who registered for course 301?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT student_id FROM student_course_attendance WHERE course_id = 301
What is the id of the student who most recently registered course 301?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 student_id FROM student_course_attendance WHERE course_id = 301 ORDER BY CASE WHEN date_of_attendance IS NULL THEN 1 ELSE 0 END DESC, date_of_attendance DESC
What are the ids of the students who registered for course 301 most recently?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT TOP 1 student_id FROM student_course_attendance WHERE course_id = 301 ORDER BY CASE WHEN date_of_attendance IS NULL THEN 1 ELSE 0 END DESC, date_of_attendance DESC
Find distinct cities of addresses of people?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id
What are the different cities where people live?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id
Find distinct cities of address of students?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id JOIN students AS T3 ON T2.person_id = T3.student_id
What are the different cities where students live?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id JOIN students AS T3 ON T2.person_id = T3.student_id
List the names of courses in alphabetical order?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT course_name FROM courses ORDER BY CASE WHEN course_name IS NULL THEN 1 ELSE 0 END, course_name
What are the names of the courses in alphabetical order?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT course_name FROM courses ORDER BY CASE WHEN course_name IS NULL THEN 1 ELSE 0 END, course_name
List the first names of people in alphabetical order?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT first_name FROM people ORDER BY CASE WHEN first_name IS NULL THEN 1 ELSE 0 END, first_name
What are the first names of the people in alphabetical order?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT first_name FROM people ORDER BY CASE WHEN first_name IS NULL THEN 1 ELSE 0 END, first_name
What are the id of students who registered courses or attended courses?
-- Tables de la base de données (T-SQL) -- TABLE [addresses] ( [address id] INT, [line 1] NVARCHAR(MAX), [line 2] NVARCHAR(MAX), [city] NVARCHAR(MAX), [zip postcode] NVARCHAR(MAX), [state province county] NVARCHAR(MAX), [country] NVARCHAR(MAX) ); TABLE [people] ( [person id] INT, [f...
SELECT student_id FROM student_course_registrations UNION SELECT student_id FROM student_course_attendance
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