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concert_singer

How many singers do we have?

| singer: singer_id, name, country, song_name, song_release_year, age, is_male | stadium: stadium_id, name, location, capacity, highest, lowest, average | concert: concert_id, concert_name, theme, stadium_id, year | singer_in_concert: concert_id, singer_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select count ( * ) from singer

concert_singer

What is the total number of singers?

| singer: singer_id, name, country, song_name, song_release_year, age, is_male |

select count ( * ) from singer

concert_singer

Show name, country, age for all singers ordered by age from the oldest to the youngest.

| singer: name, country, age, singer_id, song_name, song_release_year, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium: stadium_id, location, name, capacity, highest, lowest, average |

select name , country , age from singer order by age desc

concert_singer

What are the names, countries, and ages for every singer in descending order of age?

| singer: name, country, age, singer_id, song_name, song_release_year, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium: stadium_id, location, name, capacity, highest, lowest, average | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select name , country , age from singer order by age desc

concert_singer

What is the average, minimum, and maximum age of all singers from France?

| singer: country, age, singer_id, name, song_name, song_release_year, is_male |

select avg ( age ) , min ( age ) , max ( age ) from singer where country = 'France'

concert_singer

What is the average, minimum, and maximum age for all French singers?

| singer: country, age, singer_id, name, song_name, song_release_year | concert: concert_id | stadium: stadium_id | singer_in_concert: singer_id, concert_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select avg ( age ) , min ( age ) , max ( age ) from singer where country = 'France'

concert_singer

Show the name and the release year of the song by the youngest singer.

| singer: name, song_release_year, age, singer_id, country, is_male, song_name | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium: stadium_id, location, name, capacity, highest, lowest, average | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select song_name , song_release_year from singer order by age asc limit 1

concert_singer

What are the names and release years for all the songs of the youngest singer?

| singer: age, song_name, song_release_year, singer_id, name, country, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, year, theme, stadium_id, concert_name | stadium: stadium_id, name, location, capacity, highest, lowest, average | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select song_name , song_release_year from singer order by age asc limit 1

concert_singer

What are all distinct countries where singers above age 20 are from?

| singer: country, age, singer_id, name, song_name, song_release_year, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, stadium_id, concert_name, theme, year | stadium: stadium_id, location, name, capacity, highest, lowest, average | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select distinct country from singer where age > 20

concert_singer

What are the different countries with singers above age 20?

| singer: country, age, singer_id | singer_in_concert: singer_id, concert_id |

select distinct country from singer where age > 20

concert_singer

Show all countries and the number of singers in each country.

| singer: country, singer_id, name, song_name, song_release_year, age, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium: stadium_id, location, name, capacity, highest, lowest, average |

select country , count ( * ) from singer group by country

concert_singer

How many singers are from each country?

| singer: singer_id, country, name, song_name, song_release_year, age, is_male | stadium: stadium_id, location, name, capacity, highest, lowest, average | concert: concert_id, concert_name, theme, stadium_id, year | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select country , count ( * ) from singer group by country

concert_singer

List all song names by singers above the average age.

| singer: name, age, song_name, country, song_release_year, is_male, singer_id | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium: stadium_id, location, name, capacity, highest, lowest, average | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select song_name from singer where age > ( select avg ( age ) from singer )

concert_singer

What are all the song names by singers who are older than average?

| singer: age, name, song_name, singer_id, country, song_release_year, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id | stadium: stadium_id |

select song_name from singer where age > ( select avg ( age ) from singer )

concert_singer

Show location and name for all stadiums with a capacity between 5000 and 10000.

| stadium: capacity, name, location, stadium_id, highest, lowest, average | concert: stadium_id, concert_id, concert_name, theme, year | singer: singer_id, name, country, song_name, song_release_year, age, is_male | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select location , name from stadium where capacity between 5000 and 10000

concert_singer

What are the locations and names of all stations with capacity between 5000 and 10000?

| stadium: capacity, name, location, stadium_id, highest, lowest, average | concert: stadium_id, concert_id, concert_name, theme, year | singer: singer_id, name, country, song_name, song_release_year, age, is_male | singer_in_concert: concert_id, singer_id |

select location , name from stadium where capacity between 5000 and 10000

concert_singer

What is the maximum capacity and the average of all stadiums ?

| stadium: capacity, average, stadium_id, location, name, highest, lowest | singer: singer_id, name, country, song_name, song_release_year, age, is_male | concert: concert_id, concert_name, theme, stadium_id, year | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select max ( capacity ) , average from stadium

concert_singer

What is the average and maximum capacities for all stadiums ?

| stadium: capacity, stadium_id, name, location, highest, lowest, average | singer: singer_id | concert: stadium_id, concert_id | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select avg ( capacity ) , max ( capacity ) from stadium

concert_singer

What is the name and capacity for the stadium with highest average attendance?

| stadium: average, name, capacity, stadium_id, location, highest, lowest | concert: stadium_id, concert_id, concert_name, theme, year | singer_in_concert: concert_id, singer_id | singer: singer_id, name, country, song_name, song_release_year, age, is_male | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select name , capacity from stadium order by average desc limit 1

concert_singer

What is the name and capacity for the stadium with the highest average attendance?

| stadium: average, name, capacity, stadium_id, highest, lowest, location | concert: stadium_id, concert_id, concert_name, theme, year | singer: singer_id, name, country, song_name, song_release_year, age, is_male | singer_in_concert: singer_id, concert_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select name , capacity from stadium order by average desc limit 1

concert_singer

How many concerts are there in year 2014 or 2015?

| concert: year, concert_id, concert_name, theme, stadium_id | singer_in_concert: concert_id | singer: | stadium: |

select count ( * ) from concert where year = 2014 or year = 2015

concert_singer

How many concerts occurred in 2014 or 2015?

| concert: year, concert_id, concert_name, theme, stadium_id | stadium: stadium_id, location, name, capacity, highest, lowest, average | singer: singer_id, name, country, song_name, song_release_year, age, is_male | singer_in_concert: concert_id, singer_id |

select count ( * ) from concert where year = 2014 or year = 2015

concert_singer

Show the stadium name and the number of concerts in each stadium.

| stadium: name, stadium_id | concert: stadium_id, concert_id | singer: | singer_in_concert: |

select stadium.name , count ( * ) from concert join stadium on concert.stadium_id = stadium.stadium_id group by concert.stadium_id

concert_singer

For each stadium, how many concerts play there?

| stadium: stadium_id, name, location, capacity, highest, lowest, average | concert: stadium_id, concert_id, concert_name, theme, year | singer: singer_id, name, country, song_name, song_release_year, age, is_male | singer_in_concert: concert_id, singer_id |

select stadium.name , count ( * ) from concert join stadium on concert.stadium_id = stadium.stadium_id group by concert.stadium_id

concert_singer

Show the stadium name and capacity with most number of concerts in year 2014 or after.

| concert: year, stadium_id, concert_id, concert_name, theme | stadium: name, capacity, stadium_id, location, highest, lowest, average | singer_in_concert: concert_id, singer_id | singer: singer_id, name, country, song_name, song_release_year, age, is_male | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select stadium.name , stadium.capacity from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year >= 2014 group by stadium.stadium_id order by count ( * ) desc limit 1

concert_singer

What is the name and capacity of the stadium with the most concerts after 2013 ?

| stadium: stadium_id, name, capacity, location, highest, lowest, average | concert: stadium_id, year, concert_id, concert_name, theme | singer_in_concert: concert_id, singer_id | singer: singer_id, name, country, song_name, song_release_year, age, is_male | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select stadium.name , stadium.capacity from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year > 2013 group by stadium.stadium_id order by count ( * ) desc limit 1

concert_singer

Which year has most number of concerts?

| concert: year, concert_id | singer_in_concert: concert_id |

select year from concert group by year order by count ( * ) desc limit 1

concert_singer

What is the year that had the most concerts?

| concert: year, concert_id, concert_name, theme, stadium_id | singer_in_concert: concert_id, singer_id | singer: singer_id, name, country, song_name, song_release_year, age, is_male | stadium: stadium_id, location, name, capacity, highest, lowest, average | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select year from concert group by year order by count ( * ) desc limit 1

concert_singer

Show the stadium names without any concert.

| stadium: stadium_id, name, location, capacity, highest, lowest, average | concert: stadium_id, concert_id, concert_name, theme, year | singer_in_concert: - | singer: - |

select name from stadium where stadium_id not in ( select stadium_id from concert )

concert_singer

What are the names of the stadiums without any concerts?

| stadium: name, stadium_id, location, capacity, highest, lowest, average | singer: | concert: stadium_id, concert_id, concert_name, theme, year | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select name from stadium where stadium_id not in ( select stadium_id from concert )

concert_singer

Show countries where a singer above age 40 and a singer below 30 are from.

| singer: country, age, singer_id, name, song_name, song_release_year, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium: stadium_id, location, name, capacity, highest, lowest, average |

select country from singer where age > 40 intersect select country from singer where age < 30

concert_singer

Show names for all stadiums except for stadiums having a concert in year 2014.

| stadium: stadium_id, name, location, capacity, highest, lowest, average | concert: stadium_id, year, concert_id, concert_name, theme | singer_in_concert: concert_id, singer_id | singer: singer_id, name, country, song_name, song_release_year, age, is_male |

select name from stadium except select stadium.name from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year = 2014

concert_singer

What are the names of all stadiums that did not have a concert in 2014?

| stadium: name, stadium_id | concert: stadium_id, year | singer_in_concert: | singer: | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select name from stadium except select stadium.name from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year = 2014

concert_singer

Show the name and theme for all concerts and the number of singers in each concert.

| concert: concert_name, theme | singer_in_concert: concert_id, singer_id | stadium: stadium_id, location, name, capacity, highest, lowest, average | singer: singer_id, name, country, song_name, song_release_year, age, is_male | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select concert.concert_name , concert.theme , count ( * ) from singer_in_concert join concert on singer_in_concert.concert_id = concert.concert_id group by concert.concert_id

concert_singer

What are the names , themes , and number of singers for every concert ?

| concert: concert_name, theme, concert_id, stadium_id | singer_in_concert: concert_id, singer_id | singer: name, singer_id | stadium: stadium_id |

select concert.concert_name , concert.theme , count ( * ) from singer_in_concert join concert on singer_in_concert.concert_id = concert.concert_id group by concert.concert_id

concert_singer

List singer names and number of concerts for each singer.

| singer: singer_id, name, country, song_name, song_release_year, age, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id | stadium: stadium_id, location, name, capacity, highest, lowest, average |

select singer.name , count ( * ) from singer_in_concert join singer on singer_in_concert.singer_id = singer.singer_id group by singer.singer_id

concert_singer

What are the names of the singers and number of concerts for each person?

| singer: name, singer_id, country, song_name, song_release_year, age, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium : stadium_id, location, name, capacity, highest, lowest, average | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select singer.name , count ( * ) from singer_in_concert join singer on singer_in_concert.singer_id = singer.singer_id group by singer.singer_id

concert_singer

List all singer names in concerts in year 2014.

| concert: year, concert_id | singer_in_concert: concert_id, singer_id | singer: singer_id, name | stadium: stadium_id | singer: country, song_name, song_release_year, age, is_male | concert: concert_name, theme, stadium_id | stadium: location, name, capacity, highest, lowest, average |

select singer.name from singer_in_concert join singer on singer_in_concert.singer_id = singer.singer_id join concert on singer_in_concert.concert_id = concert.concert_id where concert.year = 2014

concert_singer

What are the names of the singers who performed in a concert in 2014?

| concert: year, concert_id, concert_name, theme | singer_in_concert: concert_id, singer_id | singer: name, singer_id, country, song_name, song_release_year, age, is_male | stadium: stadium_id, location, name, capacity, highest, lowest, average | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select singer.name from singer_in_concert join singer on singer_in_concert.singer_id = singer.singer_id join concert on singer_in_concert.concert_id = concert.concert_id where concert.year = 2014

concert_singer

what is the name and nation of the singer who have a song having 'Hey' in its name?

| singer: song_name, name, country, singer_id, song_release_year, age, is_male | singer_in_concert: singer_id, concert_id | concert: concert_id, concert_name, theme, stadium_id, year | stadium : stadium_id, location, name, capacity, highest, lowest, average | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select name , country from singer where song_name like '%Hey%'

concert_singer

What is the name and country of origin of every singer who has a song with the word 'Hey' in its title?

| singer: name, country, song_name, singer_id | singer_in_concert: singer_id, concert_id | concert: concert_id, stadium_id | stadium: stadium_id | singer: age, is_male, song_release_year | concert: concert_name, theme, year | stadium: location, name, capacity, highest, lowest, average | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id | concert.stadium_id = stadium.stadium_id |

select name , country from singer where song_name like '%Hey%'

concert_singer

Find the name and location of the stadiums which some concerts happened in the years of both 2014 and 2015.

| stadium: name, stadium_id, location, capacity, highest, lowest, average | concert: year, stadium_id, concert_id, concert_name, theme | singer: singer_id, song_release_year, name, country, age, is_male, song_name | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select stadium.name , stadium.location from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year = 2014 intersect select stadium.name , stadium.location from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year = 2015

concert_singer

What are the names and locations of the stadiums that had concerts that occurred in both 2014 and 2015?

| concert: year, stadium_id, concert_id, concert_name, theme | stadium: name, location, stadium_id, capacity, highest, lowest, average | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.concert_id = concert.concert_id |

select stadium.name , stadium.location from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year = 2014 intersect select stadium.name , stadium.location from concert join stadium on concert.stadium_id = stadium.stadium_id where concert.year = 2015

concert_singer

Find the number of concerts happened in the stadium with the highest capacity .

| stadium: capacity, stadium_id, location, name, highest, lowest, average | concert: stadium_id, concert_id, concert_name, theme, year | singer: singer_id, name, country, song_name, song_release_year, age, is_male | singer_in_concert: concert_id, singer_id | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select count ( * ) from concert where stadium_id = ( select stadium_id from stadium order by capacity desc limit 1 )

concert_singer

What are the number of concerts that occurred in the stadium with the largest capacity ?

| stadium: capacity, stadium_id, location, name, highest, lowest, average | concert: stadium_id, concert_id, concert_name, theme, year | singer_in_concert: concert_id, singer_id | singer: singer_id, name, country, song_name, song_release_year, age, is_male | concert.stadium_id = stadium.stadium_id | singer_in_concert.singer_id = singer.singer_id | singer_in_concert.concert_id = concert.concert_id |

select count ( * ) from concert where stadium_id = ( select stadium_id from stadium order by capacity desc limit 1 )

pets_1

Find the number of pets whose weight is heavier than 10.

| pets: weight, petid | has_pet: petid, stuid | student: stuid |

select count ( * ) from pets where weight > 10

pets_1

How many pets have a greater weight than 10?

| pets: weight, petid | has_pet: petid, stuid | student: stuid | has_pet.petid = pets.petid | has_pet.stuid = student.stuid |

select count ( * ) from pets where weight > 10

pets_1

Find the weight of the youngest dog.

| pets: pet_age, weight, petid, pettype | has_pet: petid, stuid | student: stuid |

select weight from pets order by pet_age asc limit 1

pets_1

How much does the youngest dog weigh?

| student: stuid, age, lname, fname, sex, major, advisor, city_code | has_pet: stuid, petid | pets: weight, pet_age, pettype, petid | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select weight from pets order by pet_age asc limit 1

pets_1

Find the maximum weight for each type of pet. List the maximum weight and pet type.

| pets: weight, pettype, petid | has_pet: petid, stuid | student: stuid |

select max ( weight ) , pettype from pets group by pettype

pets_1

List the maximum weight and type for each type of pet.

| pets: pettype, weight, petid, pet_age | has_pet: petid, stuid | student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select max ( weight ) , pettype from pets group by pettype

pets_1

Find number of pets owned by students who are older than 20.

| student: stuid, age | has_pet: stuid, petid | pets: petid |

select count ( * ) from student join has_pet on student.stuid = has_pet.stuid where student.age > 20

pets_1

How many pets are owned by students that have an age greater than 20?

| student: stuid, age, lname, fname, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid=student.stuid | has_pet.petid=pets.petid |

select count ( * ) from student join has_pet on student.stuid = has_pet.stuid where student.age > 20

pets_1

Find the number of dog pets that are raised by female students (with sex F).

| student: sex, stuid | has_pet: stuid, petid | pets: pettype, petid |

select count ( * ) from student join has_pet on student.stuid = has_pet.stuid join pets on has_pet.petid = pets.petid where student.sex = 'F' and pets.pettype = 'dog'

pets_1

How many dog pets are raised by female students?

| student: sex, stuid, lname, fname, age, major, advisor, city_code | has_pet: stuid, petid | pets: pettype, petid, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select count ( * ) from student join has_pet on student.stuid = has_pet.stuid join pets on has_pet.petid = pets.petid where student.sex = 'F' and pets.pettype = 'dog'

pets_1

Find the number of distinct type of pets.

| pets: pettype, petid, pet_age, weight | has_pet: petid, stuid | student: stuid, lname, fname, age, sex, major, advisor, city_code |

select count ( distinct pettype ) from pets

pets_1

How many different types of pet are there?

| pets: pettype, petid, pet_age, weight | has_pet: petid, stuid | student: stuid, lname, fname, age, sex, major, advisor, city_code |

select count ( distinct pettype ) from pets

pets_1

Find the first name of students who have cat or dog pet.

| student: stuid, fname, lname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: pettype, petid, pet_age, weight |

select distinct student.fname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' or pets.pettype = 'dog'

pets_1

What are the first names of every student who has a cat or dog as a pet?

| student: stuid, fname, lname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select distinct student.fname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' or pets.pettype = 'dog'

pets_1

Find the first name of students who have both cat and dog pets .

| student: stuid, fname | has_pet: stuid, petid | pets: petid, pettype | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select student.fname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' intersect select student.fname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'dog'

pets_1

What are the students' first names who have both cats and dogs as pets?

| student: stuid, fname, lname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select student.fname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' intersect select student.fname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'dog'

pets_1

Find the major and age of students who do not have a cat pet.

| student: major, age, stuid, lname, fname, sex, advisor, city_code | has_pet: stuid, petid | pets: pettype, petid, pet_age, weight | has_pet.stuid=student.stuid | has_pet.petid=pets.petid |

select major , age from student where stuid not in ( select student.stuid from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' )

pets_1

What major is every student who does not own a cat as a pet, and also how old are they?

| student: stuid, age, major, lname, fname, sex, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select major , age from student where stuid not in ( select student.stuid from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' )

pets_1

Find the id of students who do not have a cat pet.

| student: stuid | has_pet: stuid, petid | pets: petid, pettype |

select stuid from student except select student.stuid from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat'

pets_1

What are the ids of the students who do not own cats as pets?

| student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select stuid from student except select student.stuid from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat'

pets_1

Find the first name and age of students who have a dog but do not have a cat as a pet.

| student: stuid, fname, age, lname, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select student.fname , student.age from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'dog' and student.stuid not in ( select student.stuid from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' )

pets_1

What is the first name of every student who has a dog but does not have a cat?

| student: fname, stuid | has_pet: stuid, petid | pets: petid, pettype | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select student.fname , student.age from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'dog' and student.stuid not in ( select student.stuid from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pettype = 'cat' )

pets_1

Find the type and weight of the youngest pet.

| student: stuid | has_pet: stuid, petid | pets: petid, pet_age, pettype, weight |

select pettype , weight from pets order by pet_age asc limit 1

pets_1

What type of pet is the youngest animal, and how much does it weigh?

| pets: pet_age, pettype, weight, petid | has_pet: petid, stuid | student: stuid |

select pettype , weight from pets order by pet_age asc limit 1

pets_1

Find the id and weight of all pets whose age is older than 1.

| pets: pet_age, petid, weight, pettype | student: stuid, age, lname, fname, sex, major, advisor, city_code | has_pet: stuid, petid |

select petid , weight from pets where pet_age > 1

pets_1

What is the id and weight of every pet who is older than 1?

| pets: petid, pet_age, weight | has_pet: petid, stuid | student: stuid | has_pet.petid = pets.petid | has_pet.stuid = student.stuid |

select petid , weight from pets where pet_age > 1

pets_1

Find the average and maximum age for each type of pet.

| pets: pettype, pet_age, petid | has_pet: petid, stuid | student: stuid |

select avg ( pet_age ) , max ( pet_age ) , pettype from pets group by pettype

pets_1

What is the average and maximum age for each pet type?

| pets: pettype, pet_age, petid, weight | has_pet: petid, stuid | student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select avg ( pet_age ) , max ( pet_age ) , pettype from pets group by pettype

pets_1

Find the average weight for each pet type.

| pets: pettype, weight, petid, pet_age | has_pet: petid, stuid | student: stuid |

select avg ( weight ) , pettype from pets group by pettype

pets_1

What is the average weight for each type of pet?

| pets: weight, pettype, petid, pet_age | has_pet: stuid, petid | student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select avg ( weight ) , pettype from pets group by pettype

pets_1

Find the first name and age of students who have a pet.

| student: stuid, fname, age | has_pet: stuid, petid | pets: petid | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select distinct student.fname , student.age from student join has_pet on student.stuid = has_pet.stuid

pets_1

What are the different first names and ages of the students who do have pets?

| student: stuid, fname, age, lname, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select distinct student.fname , student.age from student join has_pet on student.stuid = has_pet.stuid

pets_1

Find the id of the pet owned by student whose last name is ‘Smith’.

| student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid=student.stuid | has_pet.petid=pets.petid |

select has_pet.petid from student join has_pet on student.stuid = has_pet.stuid where student.lname = 'Smith'

pets_1

What is the id of the pet owned by the student whose last name is 'Smith'?

| student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | student.stuid = has_pet.stuid | has_pet.petid = pets.petid |

select has_pet.petid from student join has_pet on student.stuid = has_pet.stuid where student.lname = 'Smith'

pets_1

Find the number of pets for each student who has any pet and student id.

| student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight |

select count ( * ) , student.stuid from student join has_pet on student.stuid = has_pet.stuid group by student.stuid

pets_1

For students who have pets , how many pets does each student have ? list their ids instead of names .

| student: stuid | has_pet: stuid, petid | pets: petid |

select count ( * ) , student.stuid from student join has_pet on student.stuid = has_pet.stuid group by student.stuid

pets_1

Find the first name and gender of student who have more than one pet.

| student: stuid, fname, sex, lname, age, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select student.fname , student.sex from student join has_pet on student.stuid = has_pet.stuid group by student.stuid having count ( * ) > 1

pets_1

What is the first name and gender of the all the students who have more than one pet?

| student: stuid, fname, sex, lname, age, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select student.fname , student.sex from student join has_pet on student.stuid = has_pet.stuid group by student.stuid having count ( * ) > 1

pets_1

Find the last name of the student who has a cat that is age 3.

| student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select student.lname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pet_age = 3 and pets.pettype = 'cat'

pets_1

What is the last name of the student who has a cat that is 3 years old?

| student: stuid, lname, fname, age, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | student.stuid = has_pet.stuid | has_pet.petid = pets.petid |

select student.lname from student join has_pet on student.stuid = has_pet.stuid join pets on pets.petid = has_pet.petid where pets.pet_age = 3 and pets.pettype = 'cat'

pets_1

Find the average age of students who do not have any pet .

| student: stuid, age, lname, fname, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight |

select avg ( age ) from student where stuid not in ( select stuid from has_pet )

pets_1

What is the average age for all students who do not own any pets ?

| student: stuid, age, lname, fname, sex, major, advisor, city_code | has_pet: stuid, petid | pets: petid, pettype, pet_age, weight | has_pet.stuid = student.stuid | has_pet.petid = pets.petid |

select avg ( age ) from student where stuid not in ( select stuid from has_pet )

car_1

How many continents are there?

| continents: continent, contid | countries: continent, countryid, countryname | car_makers: country, id, maker, fullname | model_list: maker, modelid, model | car_names: model, makeid, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select count ( * ) from continents

car_1

What is the number of continents?

| continents: continent, contid | countries: countryid, countryname, continent | car_makers: id, maker, fullname, country | model_list: modelid, maker, model | car_names: makeid, model, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select count ( * ) from continents

car_1

How many countries does each continent have? List the continent id, continent name and the number of countries.

| continents: contid, continent | countries: countryid, continent | car_makers: id, maker, fullname, country | model_list: modelid, maker, model | car_names: makeid, model, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select continents.contid , continents.continent , count ( * ) from continents join countries on continents.contid = countries.continent group by continents.contid

car_1

For each continent, list its id, name, and how many countries it has?

| continents: contid, continent | countries: continent, countryid, countryname | car_makers: country, id, maker, fullname | model_list: maker, modelid, model | car_names: model, makeid, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select continents.contid , continents.continent , count ( * ) from continents join countries on continents.contid = countries.continent group by continents.contid

car_1

How many countries are listed?

| countries: countryname, countryid, continent | continents: contid, continent | car_makers: country, id, maker, fullname | model_list: modelid, maker, model | car_names: makeid, model, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select count ( * ) from countries

car_1

How many countries exist?

| countries: countryname, countryid, continent | continents: contid, continent | car_makers: country, id, maker, fullname | model_list: maker, modelid, model | car_names: model, makeid, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select count ( * ) from countries

car_1

How many models does each car maker produce? List maker full name, id and the number.

| car_makers: fullname, id, maker, country | model_list: maker, model | countries: countryid, countryname | continents: contid, continent | car_names: makeid, model, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select car_makers.fullname , car_makers.id , count ( * ) from car_makers join model_list on car_makers.id = model_list.maker group by car_makers.id

car_1

What is the full name of each car maker, along with its id and how many models it produces?

| car_makers: id, fullname, maker, country | model_list: maker, modelid, model | countries: countryid, countryname, continent | continents: contid, continent | car_names: makeid, model, make | cars_data: id, mpg, cylinders, edispl, horsepower, weight, accelerate, year | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select car_makers.fullname , car_makers.id , count ( * ) from car_makers join model_list on car_makers.id = model_list.maker group by car_makers.id

car_1

Which model of the car has the minimum horsepower?

| cars_data: horsepower, id | car_names: makeid, model | model_list: model, maker | car_makers: id | countries: countryid | continents: contid | cars_data.id = car_names.makeid | car_names.model = model_list.model | model_list.maker = car_makers.id | car_makers.country = countries.countryid | countries.continent = continents.contid |

select car_names.model from car_names join cars_data on car_names.makeid = cars_data.id order by cars_data.horsepower asc limit 1

car_1

What is the model of the car with the smallest amount of horsepower?

| cars_data: horsepower, id | car_names: makeid, model | model_list: model, modelid, maker | car_makers: id | countries: countryid | continents: contid | cars_data.id = car_names.makeid | car_names.model = model_list.model | model_list.maker = car_makers.id | car_makers.country = countries.countryid | countries.continent = continents.contid |

select car_names.model from car_names join cars_data on car_names.makeid = cars_data.id order by cars_data.horsepower asc limit 1

car_1

Find the model of the car whose weight is below the average weight.

| cars_data: weight, id | car_names: model, makeid | model_list: model, maker | car_makers: id | countries: | continents: |

select car_names.model from car_names join cars_data on car_names.makeid = cars_data.id where cars_data.weight < ( select avg ( weight ) from cars_data )

car_1

What is the model for the car with a weight smaller than the average?

| cars_data: weight, id | car_names: model, makeid | model_list: model, modelid, maker | car_makers: id | countries: countryid, countryname, continent | continents: contid, continent | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select car_names.model from car_names join cars_data on car_names.makeid = cars_data.id where cars_data.weight < ( select avg ( weight ) from cars_data )

car_1

Find the name of the makers that produced some cars in the year of 1970?

| car_makers: id, maker, country, fullname | cars_data: id, year, mpg, cylinders, edispl, horsepower, weight, accelerate | model_list: maker, modelid, model | car_names: makeid, model, make | countries: countryid, countryname, continent | continents: contid, continent | countries.continent = continents.contid | car_makers.country = countries.countryid | model_list.maker = car_makers.id | car_names.model = model_list.model | cars_data.id = car_names.makeid |

select distinct car_makers.maker from car_makers join model_list on car_makers.id = model_list.maker join car_names on model_list.model = car_names.model join cars_data on car_names.makeid = cars_data.id where cars_data.year = '1970'