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Pipable Inc 11

CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

Find the number of matches in different competitions.

SELECT count(*) , Competition FROM MATCH GROUP BY Competition

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CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

For each competition, count the number of matches.

SELECT count(*) , Competition FROM MATCH GROUP BY Competition

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CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

List venues of all matches in the order of their dates starting from the most recent one.

SELECT venue FROM MATCH ORDER BY date DESC

easy

CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

What are the venues of all the matches? Sort them in the descending order of match date.

SELECT venue FROM MATCH ORDER BY date DESC

easy

CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

what is the GDP of the city with the largest population.

SELECT gdp FROM city ORDER BY Regional_Population DESC LIMIT 1

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CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

Find the GDP of the city with the largest regional population.

SELECT gdp FROM city ORDER BY Regional_Population DESC LIMIT 1

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CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

What are the GDP and population of the city that already served as a host more than once?

SELECT t1.gdp , t1.Regional_Population FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id = T2.host_city GROUP BY t2.Host_City HAVING count(*) > 1

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CREATE TABLE city (City_ID number, City text, Hanzi text, Hanyu_Pinyin text, Regional_Population number, GDP number); CREATE TABLE match (Match_ID number, Date text, Venue text, Score text, Result text, Competition text); CREATE TABLE temperature (City_ID number, Jan number, Feb number, Mar number, Apr number, Jun number, Jul number, Aug number, Sep number, Oct number, Nov number, Dec number); CREATE TABLE hosting_city (Year number, Match_ID number, Host_City text);

Which cities have served as host cities more than once? Return me their GDP and population.

SELECT t1.gdp , t1.Regional_Population FROM city AS T1 JOIN hosting_city AS T2 ON T1.city_id = T2.host_city GROUP BY t2.Host_City HAVING count(*) > 1

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

List every individual's first name, middle name and last name in alphabetical order by last name.

SELECT individual_first_name , individual_middle_name , individual_last_name FROM individuals ORDER BY individual_last_name

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the first, middle, and last names of all individuals, ordered by last name?

SELECT individual_first_name , individual_middle_name , individual_last_name FROM individuals ORDER BY individual_last_name

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

List all the types of forms.

SELECT DISTINCT form_type_code FROM forms

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the different types of forms?

SELECT DISTINCT form_type_code FROM forms

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the name of the most popular party form.

SELECT t1.form_name FROM forms AS t1 JOIN party_forms AS t2 ON t1.form_id = t2.form_id GROUP BY t2.form_id ORDER BY count(*) DESC LIMIT 1

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What is the name of the party form that is most common?

SELECT t1.form_name FROM forms AS t1 JOIN party_forms AS t2 ON t1.form_id = t2.form_id GROUP BY t2.form_id ORDER BY count(*) DESC LIMIT 1

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the payment method and phone of the party with email "enrico09@example.com".

SELECT payment_method_code , party_phone FROM parties WHERE party_email = "enrico09@example.com"

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What is the payment method code and party phone of the party with the email 'enrico09@example.com'?

SELECT payment_method_code , party_phone FROM parties WHERE party_email = "enrico09@example.com"

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the emails of parties with the most popular party form.

SELECT t1.party_email FROM parties AS t1 JOIN party_forms AS t2 ON t1.party_id = t2.party_id WHERE t2.form_id = (SELECT form_id FROM party_forms GROUP BY form_id ORDER BY count(*) DESC LIMIT 1)

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the party emails associated with parties that used the party form that is the most common?

SELECT t1.party_email FROM parties AS t1 JOIN party_forms AS t2 ON t1.party_id = t2.party_id WHERE t2.form_id = (SELECT form_id FROM party_forms GROUP BY form_id ORDER BY count(*) DESC LIMIT 1)

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

List all the name of organizations in order of the date formed.

SELECT organization_name FROM organizations ORDER BY date_formed ASC

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the names of organizations, ordered by the date they were formed, ascending?

SELECT organization_name FROM organizations ORDER BY date_formed ASC

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the name of the youngest organization.

SELECT organization_name FROM organizations ORDER BY date_formed DESC LIMIT 1

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What is the name of the organization that was formed most recently?

SELECT organization_name FROM organizations ORDER BY date_formed DESC LIMIT 1

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the last name of the latest contact individual of the organization "Labour Party".

SELECT t3.individual_last_name FROM organizations AS t1 JOIN organization_contact_individuals AS t2 ON t1.organization_id = t2.organization_id JOIN individuals AS t3 ON t2.individual_id = t3.individual_id WHERE t1.organization_name = "Labour Party" ORDER BY t2.date_contact_to DESC LIMIT 1

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CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What is the last name of the contact individual from the Labour party organization who was contacted most recently?

SELECT t3.individual_last_name FROM organizations AS t1 JOIN organization_contact_individuals AS t2 ON t1.organization_id = t2.organization_id JOIN individuals AS t3 ON t2.individual_id = t3.individual_id WHERE t1.organization_name = "Labour Party" ORDER BY t2.date_contact_to DESC LIMIT 1

extra

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the last name of the first ever contact person of the organization with the highest UK Vat number.

SELECT t3.individual_last_name FROM organizations AS t1 JOIN organization_contact_individuals AS t2 ON t1.organization_id = t2.organization_id JOIN individuals AS t3 ON t2.individual_id = t3.individual_id WHERE t1.uk_vat_number = (SELECT max(uk_vat_number) FROM organizations) ORDER BY t2.date_contact_to ASC LIMIT 1

extra

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What is the last name of the first individual contacted from the organization with the maximum UK Vat number across all organizations?

SELECT t3.individual_last_name FROM organizations AS t1 JOIN organization_contact_individuals AS t2 ON t1.organization_id = t2.organization_id JOIN individuals AS t3 ON t2.individual_id = t3.individual_id WHERE t1.uk_vat_number = (SELECT max(uk_vat_number) FROM organizations) ORDER BY t2.date_contact_to ASC LIMIT 1

extra

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

How many services are there?

SELECT count(*) FROM services

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Count the number of services.

SELECT count(*) FROM services

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find name of the services that has never been used.

SELECT service_name FROM services EXCEPT SELECT t1.service_name FROM services AS t1 JOIN party_services AS t2 ON t1.service_id = t2.service_id

hard

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the names of the services that have never been used?

SELECT service_name FROM services EXCEPT SELECT t1.service_name FROM services AS t1 JOIN party_services AS t2 ON t1.service_id = t2.service_id

hard

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the name of all the cities and states.

SELECT town_city FROM addresses UNION SELECT state_province_county FROM addresses

hard

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the names of all cities and states?

SELECT town_city FROM addresses UNION SELECT state_province_county FROM addresses

hard

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

How many cities are there in state "Colorado"?

SELECT count(*) FROM addresses WHERE state_province_county = "Colorado"

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Count the number of cities in the state of Colorado.

SELECT count(*) FROM addresses WHERE state_province_county = "Colorado"

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the payment method code used by more than 3 parties.

SELECT payment_method_code FROM parties GROUP BY payment_method_code HAVING count(*) > 3

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the payment method codes that have been used by more than 3 parties?

SELECT payment_method_code FROM parties GROUP BY payment_method_code HAVING count(*) > 3

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the name of organizations whose names contain "Party".

SELECT organization_name FROM organizations WHERE organization_name LIKE "%Party%"

medium

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the names of organizations that contain the word "Party"?

SELECT organization_name FROM organizations WHERE organization_name LIKE "%Party%"

medium

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

How many distinct payment methods are used by parties?

SELECT count(DISTINCT payment_method_code) FROM parties

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Count the number of different payment method codes used by parties.

SELECT count(DISTINCT payment_method_code) FROM parties

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Which is the email of the party that has used the services the most number of times?

SELECT t1.party_email FROM parties AS t1 JOIN party_services AS t2 ON t1.party_id = t2.customer_id GROUP BY t1.party_email ORDER BY count(*) DESC LIMIT 1

extra

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Return the party email that has used party services the greatest number of times.

SELECT t1.party_email FROM parties AS t1 JOIN party_services AS t2 ON t1.party_id = t2.customer_id GROUP BY t1.party_email ORDER BY count(*) DESC LIMIT 1

extra

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Which state can address "6862 Kaitlyn Knolls" possibly be in?

SELECT state_province_county FROM addresses WHERE line_1_number_building LIKE "%6862 Kaitlyn Knolls%"

medium

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Give the state corresponding to the line number building "6862 Kaitlyn Knolls".

SELECT state_province_county FROM addresses WHERE line_1_number_building LIKE "%6862 Kaitlyn Knolls%"

medium

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What is the name of organization that has the greatest number of contact individuals?

SELECT t1.organization_name FROM organizations AS t1 JOIN organization_contact_individuals AS t2 ON t1.organization_id = t2.organization_id GROUP BY t1.organization_name ORDER BY count(*) DESC LIMIT 1

extra

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Return the name of the organization which has the most contact individuals.

SELECT t1.organization_name FROM organizations AS t1 JOIN organization_contact_individuals AS t2 ON t1.organization_id = t2.organization_id GROUP BY t1.organization_name ORDER BY count(*) DESC LIMIT 1

extra

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

Find the last name of the individuals that have been contact individuals of an organization.

SELECT DISTINCT t1.individual_last_name FROM individuals AS t1 JOIN organization_contact_individuals AS t2 ON t1.individual_id = t2.individual_id

easy

CREATE TABLE Addresses (address_id number, line_1_number_building text, town_city text, zip_postcode text, state_province_county text, country text); CREATE TABLE Services (service_id number, service_type_code text, service_name text, service_descriptio text); CREATE TABLE Forms (form_id number, form_type_code text, service_id number, form_number text, form_name text, form_description text); CREATE TABLE Individuals (individual_id number, individual_first_name text, individual_middle_name text, inidividual_phone text, individual_email text, individual_address text, individual_last_name text); CREATE TABLE Organizations (organization_id number, date_formed time, organization_name text, uk_vat_number text); CREATE TABLE Parties (party_id number, payment_method_code text, party_phone text, party_email text); CREATE TABLE Organization_Contact_Individuals (individual_id number, organization_id number, date_contact_from time, date_contact_to time); CREATE TABLE Party_Addresses (party_id number, address_id number, date_address_from time, address_type_code text, date_address_to time); CREATE TABLE Party_Forms (party_id number, form_id number, date_completion_started time, form_status_code text, date_fully_completed time); CREATE TABLE Party_Services (booking_id number, customer_id number, service_id number, service_datetime time, booking_made_date time);

What are the last names of individuals who have been contact individuals for an organization?

SELECT DISTINCT t1.individual_last_name FROM individuals AS t1 JOIN organization_contact_individuals AS t2 ON t1.individual_id = t2.individual_id

easy

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

How many drivers are there?

SELECT count(*) FROM driver

easy

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the name, home city, and age for all drivers.

SELECT name , home_city , age FROM driver

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the party and the number of drivers in each party.

SELECT party , count(*) FROM driver GROUP BY party

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the name of drivers in descending order of age.

SELECT name FROM driver ORDER BY age DESC

easy

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show all different home cities.

SELECT DISTINCT home_city FROM driver

easy

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the home city with the most number of drivers.

SELECT home_city FROM driver GROUP BY home_city ORDER BY count(*) DESC LIMIT 1

hard

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the party with drivers from Hartford and drivers older than 40.

SELECT party FROM driver WHERE home_city = 'Hartford' AND age > 40

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show home city where at least two drivers older than 40 are from.

SELECT home_city FROM driver WHERE age > 40 GROUP BY home_city HAVING count(*) >= 2

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show all home cities except for those having a driver older than 40.

SELECT home_city FROM driver EXCEPT SELECT home_city FROM driver WHERE age > 40

hard

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the names of the drivers without a school bus.

SELECT name FROM driver WHERE driver_id NOT IN (SELECT driver_id FROM school_bus)

hard

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the types of schools that have two schools.

SELECT TYPE FROM school GROUP BY TYPE HAVING count(*) = 2

easy

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the school name and driver name for all school buses.

SELECT T2.school , T3.name FROM school_bus AS T1 JOIN school AS T2 ON T1.school_id = T2.school_id JOIN driver AS T3 ON T1.driver_id = T3.driver_id

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

What is the maximum, minimum and average years spent working on a school bus?

SELECT max(years_working) , min(years_working) , avg(years_working) FROM school_bus

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the school name and type for schools without a school bus.

SELECT school , TYPE FROM school WHERE school_id NOT IN (SELECT school_id FROM school_bus)

extra

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

Show the type of school and the number of buses for each type.

SELECT T2.type , count(*) FROM school_bus AS T1 JOIN school AS T2 ON T1.school_id = T2.school_id GROUP BY T2.type

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

How many drivers are from Hartford city or younger than 40?

SELECT count(*) FROM driver WHERE home_city = 'Hartford' OR age < 40

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

List names for drivers from Hartford city and younger than 40.

SELECT name FROM driver WHERE home_city = 'Hartford' AND age < 40

medium

CREATE TABLE driver (Driver_ID number, Name text, Party text, Home_city text, Age number); CREATE TABLE school (School_ID number, Grade text, School text, Location text, Type text); CREATE TABLE school_bus (School_ID number, Driver_ID number, Years_Working number, If_full_time others);

find the name of driver who is driving the school bus with the longest working history.

SELECT t1.name FROM driver AS t1 JOIN school_bus AS t2 ON t1.driver_id = t2.driver_id ORDER BY years_working DESC LIMIT 1

hard

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

How many flights have a velocity larger than 200?

SELECT count(*) FROM flight WHERE velocity > 200

easy

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

List the vehicle flight number, date and pilot of all the flights, ordered by altitude.

SELECT vehicle_flight_number , date , pilot FROM flight ORDER BY altitude ASC

medium

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

List the id, country, city and name of the airports ordered alphabetically by the name.

SELECT id , country , city , name FROM airport ORDER BY name

medium

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What is maximum group equity shareholding of the companies?

SELECT max(group_equity_shareholding) FROM operate_company

easy

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What is the velocity of the pilot named 'Thompson'?

SELECT avg(velocity) FROM flight WHERE pilot = 'Thompson'

easy

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What are the names and types of the companies that have ever operated a flight?

SELECT T1.name , T1.type FROM operate_company AS T1 JOIN flight AS t2 ON T1.id = T2.company_id

medium

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What are the names of the airports which are not in the country 'Iceland'?

SELECT name FROM airport WHERE country != 'Iceland'

easy

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What are the distinct types of the companies that have operated any flights with velocity less than 200?

SELECT DISTINCT T1.type FROM operate_company AS T1 JOIN flight AS t2 ON T1.id = T2.company_id WHERE T2.velocity < 200

medium

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What are the ids and names of the companies that operated more than one flight?

SELECT T1.id , T1.name FROM operate_company AS T1 JOIN flight AS t2 ON T1.id = T2.company_id GROUP BY T1.id HAVING count(*) > 1

medium

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What is the id, name and IATA code of the airport that had most number of flights?

SELECT T1.id , T1.name , T1.IATA FROM airport AS T1 JOIN flight AS T2 ON T1.id = T2.airport_id GROUP BY T2.id ORDER BY count(*) DESC LIMIT 1

extra

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What are the different pilot names who had piloted a flight in the country 'United States' or in the airport named 'Billund Airport'?

SELECT DISTINCT T2.pilot FROM airport AS T1 JOIN flight AS T2 ON T1.id = T2.airport_id WHERE T1.country = 'United States' OR T1.name = 'Billund Airport'

hard

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

What is the most common company type, and how many are there?

SELECT TYPE , count(*) FROM operate_company GROUP BY TYPE ORDER BY count(*) DESC LIMIT 1

hard

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

How many airports haven't the pilot 'Thompson' driven an aircraft?

SELECT count(*) FROM airport WHERE id NOT IN ( SELECT airport_id FROM flight WHERE pilot = 'Thompson' );

extra

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

List the name of the pilots who have flied for both a company that mainly provide 'Cargo' services and a company that runs 'Catering services' activities.

SELECT T2.pilot FROM operate_company AS T1 JOIN flight AS t2 ON T1.id = T2.company_id WHERE T1.principal_activities = 'Cargo' INTERSECT SELECT T2.pilot FROM operate_company AS T1 JOIN flight AS t2 ON T1.id = T2.company_id WHERE T1.principal_activities = 'Catering services'

extra

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

Which of the airport names contains the word 'international'?

SELECT name FROM airport WHERE name LIKE '%international%'

medium

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

How many companies operates airlines in each airport?

SELECT T3.id , count(*) FROM operate_company AS T1 JOIN flight AS t2 ON T1.id = T2.company_id JOIN airport AS T3 ON T2.airport_id = T3.id GROUP BY T3.id

hard

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

how many airports are there in each country?

SELECT count(*) , country FROM airport GROUP BY country

medium

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

which countries have more than 2 airports?

SELECT country FROM airport GROUP BY country HAVING count(*) > 2

easy

CREATE TABLE airport (id number, City text, Country text, IATA text, ICAO text, name text); CREATE TABLE operate_company (id number, name text, Type text, Principal_activities text, Incorporated_in text, Group_Equity_Shareholding number); CREATE TABLE flight (id number, Vehicle_Flight_number text, Date text, Pilot text, Velocity number, Altitude number, airport_id number, company_id number);

which pilot is in charge of the most number of flights?

SELECT pilot FROM flight GROUP BY pilot ORDER BY count(*) DESC LIMIT 1

hard

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

How many accounts do we have?

SELECT count(*) FROM Accounts

easy

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

Count the number of accounts.

SELECT count(*) FROM Accounts

easy

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

Show all account ids and account details.

SELECT account_id , account_details FROM Accounts

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

What are the ids and details of all accounts?

SELECT account_id , account_details FROM Accounts

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

How many statements do we have?

SELECT count(*) FROM Statements

easy

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

Count the number of statements.

SELECT count(*) FROM Statements

easy

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

List all statement ids and statement details.

SELECT STATEMENT_ID , statement_details FROM Statements

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

What are the ids and details of all statements?

SELECT STATEMENT_ID , statement_details FROM Statements

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

Show statement id, statement detail, account detail for accounts.

SELECT T1.statement_id , T2.statement_details , T1.account_details FROM Accounts AS T1 JOIN Statements AS T2 ON T1.statement_id = T2.statement_id

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

What are the statement ids, statement details, and account details, for all accounts?

SELECT T1.statement_id , T2.statement_details , T1.account_details FROM Accounts AS T1 JOIN Statements AS T2 ON T1.statement_id = T2.statement_id

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

Show all statement id and the number of accounts for each statement.

SELECT STATEMENT_ID , count(*) FROM Accounts GROUP BY STATEMENT_ID

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

What are the different statement ids on accounts, and the number of accounts for each?

SELECT STATEMENT_ID , count(*) FROM Accounts GROUP BY STATEMENT_ID

medium

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

Show the statement id and the statement detail for the statement with most number of accounts.

SELECT T1.statement_id , T2.statement_details FROM Accounts AS T1 JOIN Statements AS T2 ON T1.statement_id = T2.statement_id GROUP BY T1.statement_id ORDER BY count(*) DESC LIMIT 1

extra

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

What are the statement id and statement detail for the statement that has the most corresponding accounts?

SELECT T1.statement_id , T2.statement_details FROM Accounts AS T1 JOIN Statements AS T2 ON T1.statement_id = T2.statement_id GROUP BY T1.statement_id ORDER BY count(*) DESC LIMIT 1

extra

CREATE TABLE Ref_Document_Types (Document_Type_Code text, Document_Type_Name text, Document_Type_Description text); CREATE TABLE Ref_Budget_Codes (Budget_Type_Code text, Budget_Type_Description text); CREATE TABLE Projects (Project_ID number, Project_Details text); CREATE TABLE Documents (Document_ID number, Document_Type_Code text, Project_ID number, Document_Date time, Document_Name text, Document_Description text, Other_Details text); CREATE TABLE Statements (Statement_ID number, Statement_Details text); CREATE TABLE Documents_with_Expenses (Document_ID number, Budget_Type_Code text, Document_Details text); CREATE TABLE Accounts (Account_ID number, Statement_ID number, Account_Details text);

Show the number of documents.

SELECT count(*) FROM Documents

easy