Dludora/DAIL-BIRD huggingface dataset:
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What is the ranking system ID of the award criteria? award criteria refers to criteria_name = 'Award'; */
SELECT 
SELECT ranking_system_id FROM ranking_criteria WHERE criteria_name = 'Award'
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: How many state universities are there? state universities refers to university_name LIKE '%State%'; */
SELECT 
SELECT COUNT(*) FROM university WHERE university_name LIKE '%State%'
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What is the student staff ratio of the university with the highest student staff ratio of all time? highest student staff ratio refers to max(student_staff_ratio) */
SELECT 
SELECT MAX(student_staff_ratio) FROM university_year WHERE student_staff_ratio = ( SELECT MAX(student_staff_ratio) FROM university_year )
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: How many criteria belong to ranking system ID 3? */
SELECT 
SELECT COUNT(id) FROM ranking_criteria WHERE ranking_system_id = 3
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What is the ID of the university that has only 1% of international students between 2011 to 2015? has only 1% of international students refers to pct_international_students = 1; between 2011 to 2015 refers to year BETWEEN 2011 AND 2015; ID of university refers to university_id */
SELECT 
SELECT university_id FROM university_year WHERE pct_international_students = 1 AND year BETWEEN 2011 AND 2015
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: Give the name of the country that has the most universities. has the most universities refers to MAX(COUNT(id)); name of the country refers to country_name */
SELECT 
SELECT T2.country_name FROM university AS T1 INNER JOIN country AS T2 ON T1.country_id = T2.id GROUP BY T2.country_name ORDER BY COUNT(T1.university_name) DESC LIMIT 1
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What is the name of the university that had the highest number of international students for 6 consecutive years? had the highest number of international students refers to max(pct_international_students); for 6 consecutive years refers to count(SUBTRACT(year, rm)) > = 6; name of university refers to university_name; */
SELECT 
SELECT T2.university_name FROM university_year AS T1 INNER JOIN university AS T2 ON T1.university_id = T2.id ORDER BY T1.pct_international_students DESC LIMIT 1
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: In 2014, what is the name of the university which was considered a leader in the publications rank? In 2014 refers to year = 2014; leader refers to MAX(score); in the publications rank refers to criteria_name = 'Publications Rank'; name of university refers to university_name; */
SELECT 
SELECT T3.university_name FROM ranking_criteria AS T1 INNER JOIN university_ranking_year AS T2 ON T1.id = T2.ranking_criteria_id INNER JOIN university AS T3 ON T3.id = T2.university_id WHERE T1.criteria_name = 'Publications Rank' AND T2.year = 2014 AND T1.id = 17 ORDER BY T2.score DESC LIMIT 1
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What is the name of the university that has the lowest number of students of all time? has the lowest number of students refers to min(num_students); name of the university refers to university_name */
SELECT 
SELECT T2.university_name FROM university_year AS T1 INNER JOIN university AS T2 ON T1.university_id = T2.id ORDER BY T1.num_students LIMIT 1
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: How many universities are there in the United States of America? in the United States of America refers to country_name = 'United States of America'; */
SELECT 
SELECT COUNT(*) FROM university AS T1 INNER JOIN country AS T2 ON T1.country_id = T2.id WHERE T2.country_name = 'United States of America'
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: In 2016, what is the name of the university in Australia with the highest score in Citations criteria? In 2016 refers to year = 2016; name of the university refers to university_name; in Australia refers to country_name = 'Australia'; in Citations criteria refers to criteria_name = 'Citations'; highest score refers to MAX(score) */
SELECT 
SELECT T3.university_name FROM ranking_criteria AS T1 INNER JOIN university_ranking_year AS T2 ON T1.id = T2.ranking_criteria_id INNER JOIN university AS T3 ON T3.id = T2.university_id INNER JOIN country AS T4 ON T4.id = T3.country_id WHERE T1.criteria_name = 'Citations' AND T2.year = 2016 AND T1.id = 4 AND T4.country_name = 'Australia' ORDER BY T2.score DESC LIMIT 1
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: How many universities scored 0 in Awards between 2005 to 2015? between 2005 to 2015 refers to year BETWEEN 2005 AND 2015; scored 0 refers to score = 0; in Awards refers to criteria_name = 'Award' */
SELECT 
SELECT COUNT(*) FROM ranking_criteria AS T1 INNER JOIN university_ranking_year AS T2 ON T1.id = T2.ranking_criteria_id WHERE T1.criteria_name = 'Award' AND T2.year BETWEEN 2005 AND 2015 AND T2.score = 0
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: Which country is the University of Oxford located? University of Oxford refers to university_name = 'University of Oxford'; which country refers to country_name */
SELECT 
SELECT T2.country_name FROM university AS T1 INNER JOIN country AS T2 ON T1.country_id = T2.id WHERE university_name = 'University of Oxford'
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: How many times did the Yale University achieve a score of no less than 10 in the Quality of Education Rank? Yale University refers to university_name = 'Yale University'; a score of no less than 10 refers to score > = 10; in the Quality of Education Rank refers to criteria_name = 'Quality of Education Rank' */
SELECT 
SELECT COUNT(*) FROM ranking_criteria AS T1 INNER JOIN university_ranking_year AS T2 ON T1.id = T2.ranking_criteria_id INNER JOIN university AS T3 ON T3.id = T2.university_id WHERE T3.university_name = 'Yale University' AND T2.score >= 10 AND T1.criteria_name = 'Quality of Education Rank'
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What are the names of the criteria under Center for World University Rankings? names of the criteria refers to criteria_name; under Center for World University Rankings refers to system_name = 'Center for World University Rankings'; */
SELECT 
SELECT T2.criteria_name FROM ranking_system AS T1 INNER JOIN ranking_criteria AS T2 ON T1.id = T2.ranking_system_id WHERE T1.system_name = 'Center for World University Rankings'
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: List the names of all the universities that have no less than 50,000 students in the year 2012. have no less than 50,000 students refers to num_students > 50000; name of university refers to university_name; */
SELECT 
SELECT T2.university_name FROM university_year AS T1 INNER JOIN university AS T2 ON T1.university_id = T2.id WHERE T1.num_students > 50000 AND T1.year = 2012
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: Between 2011 to 2016, in which countries can you find the universities where at least 50% of its students are international students? Between 2011 to 2016 refers to year BETWEEN 2011 AND 2016; at least 50% of its students are international students refers to pct_international_students > 50; which country refers to country_name */
SELECT 
SELECT DISTINCT T3.country_name FROM university AS T1 INNER JOIN university_year AS T2 ON T1.id = T2.university_id INNER JOIN country AS T3 ON T3.id = T1.country_id WHERE T2.pct_international_students > 50 AND T2.year BETWEEN 2011 AND 2016
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: How many universities have no less than 20,000 female students in 2016? Identify how many of the said universities are located in the United States of America. have no less than 20,000 female students refers to DIVIDE(MULTIPLY(pct_female_students, num_students), 100) > 20000; in 2016 refers to year = 2016; located in the United States of America refers to country_name = 'United States of America' */
SELECT 
SELECT COUNT(*) , SUM(CASE WHEN T3.country_name = 'United States of America' THEN 1 ELSE 0 END) AS nums_in_usa FROM university AS T1 INNER JOIN university_year AS T2 ON T1.id = T2.university_id INNER JOIN country AS T3 ON T3.id = T1.country_id WHERE T2.year = 2016 AND T2.num_students * T2.pct_female_students / 100 > 20000
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What are the names of the top 5 universities with the highest number of international students? highest number of international students refers to MAX(DIVIDE(MULTIPLY(num_students, pct_international_students), 100)); name of university refers to university_name; */
SELECT 
SELECT DISTINCT T2.university_name FROM university_year AS T1 INNER JOIN university AS T2 ON T1.university_id = T2.id ORDER BY (CAST(T1.num_students * T1.pct_international_students AS REAL) / 100) DESC LIMIT 5
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What is the university ID of the university with the largest student staff ratio? the largest student staff ratio refers to max(student_staff_ratio) */
SELECT 
SELECT university_id FROM university_year ORDER BY student_staff_ratio DESC LIMIT 1
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: Give the year where a university had the lowest number of students. had the lowest number of students refers to MIN(num_students) */
SELECT 
SELECT year FROM university_year ORDER BY num_students ASC LIMIT 1
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: Compute the average percentage of female students. average percentage of female students refers to avg(pct_female_students) */
SELECT 
SELECT AVG(pct_female_students) FROM university_year
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: Provide the number of international students and number of students in 2013 in university ID 20. number of international students refers to DIVIDE(MULTIPLY(pct_international_students, num_students), 100); in 2013 refers to year = 2013 */
SELECT 
SELECT pct_international_students * num_students, num_students FROM university_year WHERE year = 2013 AND university_id = 20
/* Given the following database schema: */
CREATE TABLE country
(
    id           INTEGER not null
            primary key,
    country_name TEXT default NULL
)

CREATE TABLE ranking_system
(
    id          INTEGER not null
            primary key,
    system_name TEXT default NULL
)

CREATE TABLE ranking_criteria
(
    id                INTEGER not null
            primary key,
    ranking_system_id INTEGER          default NULL,
    criteria_name     TEXT default NULL,
    foreign key (ranking_system_id) references ranking_system(id)
)

CREATE TABLE university
(
    id              INTEGER not null
            primary key,
    country_id      INTEGER          default NULL,
    university_name TEXT default NULL,
    foreign key (country_id) references country(id)
)

CREATE TABLE university_ranking_year
(
    university_id       INTEGER default NULL,
    ranking_criteria_id INTEGER default NULL,
    year                INTEGER default NULL,
    score               INTEGER default NULL,
    foreign key (ranking_criteria_id) references ranking_criteria(id),
    foreign key (university_id) references university(id)
)

CREATE TABLE university_year
(
    university_id              INTEGER           default NULL,
    year                       INTEGER           default NULL,
    num_students               INTEGER           default NULL,
    student_staff_ratio        REAL default NULL,
    pct_international_students INTEGER           default NULL,
    pct_female_students        INTEGER           default NULL,
    foreign key (university_id) references university(id)
)

/* Answer the following: What is the university ID of Harvard University? of Harvard University refers to university_name = 'Harvard University'; */
SELECT 
SELECT id FROM university WHERE university_name = 'Harvard University'