Schema:
CREATE TABLE `Document_Types` (
`document_type_code` VARCHAR(10) PRIMARY KEY,
`document_description` VARCHAR(255) NOT NULL
);
CREATE TABLE `Documents` (
`document_id` INTEGER PRIMARY KEY,
`document_type_code` VARCHAR(10),
`grant_id` INTEGER NOT NULL,
`sent_date` DATETIME NOT NULL,
`response_received_date` DATETIME NOT NULL,
`other_details` VARCHAR(255) NOT NULL,
FOREIGN KEY (`document_type_code` ) REFERENCES `Document_Types`(`document_type_code` ),
FOREIGN KEY (`grant_id` ) REFERENCES `Grants`(`grant_id` )
);
CREATE TABLE `Grants` (
`grant_id` INTEGER PRIMARY KEY,
`organisation_id` INTEGER NOT NULL,
`grant_amount` DECIMAL(19,4) NOT NULL DEFAULT 0,
`grant_start_date` DATETIME NOT NULL,
`grant_end_date` DATETIME NOT NULL,
`other_details` VARCHAR(255) NOT NULL,
FOREIGN KEY (`organisation_id` ) REFERENCES `Organisations`(`organisation_id` )
);
CREATE TABLE `Organisation_Types` (
`organisation_type` VARCHAR(10) PRIMARY KEY,
`organisation_type_description` VARCHAR(255) NOT NULL
);
CREATE TABLE `Organisations` (
`organisation_id` INTEGER PRIMARY KEY,
`organisation_type` VARCHAR(10) NOT NULL,
`organisation_details` VARCHAR(255) NOT NULL,
FOREIGN KEY (`organisation_type` ) REFERENCES `Organisation_Types`(`organisation_type` )
);
CREATE TABLE `Project_Outcomes` (
`project_id` INTEGER NOT NULL,
`outcome_code` VARCHAR(10) NOT NULL,
`outcome_details` VARCHAR(255),
FOREIGN KEY (`project_id` ) REFERENCES `Projects`(`project_id` ),FOREIGN KEY (`outcome_code` ) REFERENCES `Research_Outcomes`(`outcome_code` )
);
CREATE TABLE `Project_Staff` (
`staff_id` DOUBLE PRIMARY KEY,
`project_id` INTEGER NOT NULL,
`role_code` VARCHAR(10) NOT NULL,
`date_from` DATETIME,
`date_to` DATETIME,
`other_details` VARCHAR(255),
FOREIGN KEY (`project_id` ) REFERENCES `Projects`(`project_id` ),FOREIGN KEY (`role_code` ) REFERENCES `Staff_Roles`(`role_code` )
);
CREATE TABLE `Projects` (
`project_id` INTEGER PRIMARY KEY,
`organisation_id` INTEGER NOT NULL,
`project_details` VARCHAR(255) NOT NULL,
FOREIGN KEY (`organisation_id` ) REFERENCES `Organisations`(`organisation_id` )
);
CREATE TABLE `Research_Outcomes` (
`outcome_code` VARCHAR(10) PRIMARY KEY,
`outcome_description` VARCHAR(255) NOT NULL
);
CREATE TABLE `Research_Staff` (
`staff_id` INTEGER PRIMARY KEY,
`employer_organisation_id` INTEGER NOT NULL,
`staff_details` VARCHAR(255) NOT NULL,
FOREIGN KEY (`employer_organisation_id` ) REFERENCES `Organisations`(`organisation_id` )
);
CREATE TABLE `Staff_Roles` (
`role_code` VARCHAR(10) PRIMARY KEY,
`role_description` VARCHAR(255) NOT NULL
);
CREATE TABLE `Tasks` (
`task_id` INTEGER PRIMARY KEY,
`project_id` INTEGER NOT NULL,
`task_details` VARCHAR(255) NOT NULL,
`eg Agree Objectives` VARCHAR(1),
FOREIGN KEY (`project_id` ) REFERENCES `Projects`(`project_id` )
);

Question: What are the distinct grant amount for the grants where the documents were sent before '1986-08-26 20:49:27' and grant were ended after '1989-03-16 18:27:16'?
SQL:
SELECT T1.grant_amount FROM Grants AS T1 JOIN Documents AS T2 ON T1.grant_id  =  T2.grant_id WHERE T2.sent_date  <  '1986-08-26 20:49:27' INTERSECT SELECT grant_amount FROM grants WHERE grant_end_date  >  '1989-03-16 18:27:16'

Question: What are the different grant amounts for documents sent before '1986-08-26 20:49:27' and after the grant ended on '1989-03-16 18:27:16'?
SQL:
SELECT T1.grant_amount FROM Grants AS T1 JOIN Documents AS T2 ON T1.grant_id  =  T2.grant_id WHERE T2.sent_date  <  '1986-08-26 20:49:27' INTERSECT SELECT grant_amount FROM grants WHERE grant_end_date  >  '1989-03-16 18:27:16'

Question: List the project details of the project both producing patent and paper as outcomes.
SQL:
SELECT T1.project_details FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id WHERE T2.outcome_code  =  'Paper' INTERSECT SELECT T1.project_details FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id WHERE T2.outcome_code  =  'Patent'

Question: What are the details of the project that is producing both patents and papers as outcomes?
SQL:
SELECT T1.project_details FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id WHERE T2.outcome_code  =  'Paper' INTERSECT SELECT T1.project_details FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id WHERE T2.outcome_code  =  'Patent'

Question: What is the total grant amount of the organisations described as research?
SQL:
SELECT sum(grant_amount) FROM Grants AS T1 JOIN Organisations AS T2 ON T1.organisation_id  =  T2.organisation_id JOIN organisation_Types AS T3 ON T2.organisation_type  =  T3.organisation_type WHERE T3.organisation_type_description  =  'Research'

Question: What is the total amount of grant money for research?
SQL:
SELECT sum(grant_amount) FROM Grants AS T1 JOIN Organisations AS T2 ON T1.organisation_id  =  T2.organisation_id JOIN organisation_Types AS T3 ON T2.organisation_type  =  T3.organisation_type WHERE T3.organisation_type_description  =  'Research'

Question: List from which date and to which date these staff work: project staff of the project which hires the most staffs
SQL:
SELECT date_from ,  date_to FROM Project_Staff WHERE project_id IN( SELECT project_id FROM Project_Staff GROUP BY project_id ORDER BY count(*) DESC LIMIT 1 ) UNION SELECT date_from ,  date_to FROM Project_Staff WHERE role_code  =  'leader'

Question: From what date and to what date do the staff work on a project that has the most staff and has staff in a leader role?
SQL:
SELECT date_from ,  date_to FROM Project_Staff WHERE project_id IN( SELECT project_id FROM Project_Staff GROUP BY project_id ORDER BY count(*) DESC LIMIT 1 ) UNION SELECT date_from ,  date_to FROM Project_Staff WHERE role_code  =  'leader'

Question: Find the organisation ids and details of the organisations which are involved in
SQL:
SELECT T2.organisation_id ,  T2.organisation_details FROM Grants AS T1 JOIN Organisations AS T2 ON T1.organisation_id  =  T2.organisation_id GROUP BY T2.organisation_id HAVING sum(T1.grant_amount)  >  6000

Question: What are the ids and details for all organizations that have grants of more than 6000 dollars?
SQL:
SELECT T2.organisation_id ,  T2.organisation_details FROM Grants AS T1 JOIN Organisations AS T2 ON T1.organisation_id  =  T2.organisation_id GROUP BY T2.organisation_id HAVING sum(T1.grant_amount)  >  6000

Question: What is the organisation type and id of the organisation which has the most number of research staff?
SQL:
SELECT T1.organisation_type ,  T1.organisation_id FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1

Question: What is the type and id of the organization that has the most research staff?
SQL:
SELECT T1.organisation_type ,  T1.organisation_id FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1

Question: Which organisation type hires most research staff?
SQL:
SELECT T1.organisation_type FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_type ORDER BY count(*) DESC LIMIT 1

Question: What is the type of the organization with the most research staff?
SQL:
SELECT T1.organisation_type FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_type ORDER BY count(*) DESC LIMIT 1

Question: Find out the send dates of the documents with the grant amount of more than 5000 were granted by organisation type described
SQL:
SELECT T1.sent_date FROM documents AS T1 JOIN Grants AS T2 ON T1.grant_id  =  T2.grant_id JOIN Organisations AS T3 ON T2.organisation_id  =  T3.organisation_id JOIN organisation_Types AS T4 ON T3.organisation_type  =  T4.organisation_type WHERE T2.grant_amount  >  5000 AND T4.organisation_type_description  =  'Research'

Question: What are the send dates for all documents that have a grant amount of more than 5000 and are involved in research?
SQL:
SELECT T1.sent_date FROM documents AS T1 JOIN Grants AS T2 ON T1.grant_id  =  T2.grant_id JOIN Organisations AS T3 ON T2.organisation_id  =  T3.organisation_id JOIN organisation_Types AS T4 ON T3.organisation_type  =  T4.organisation_type WHERE T2.grant_amount  >  5000 AND T4.organisation_type_description  =  'Research'

Question: What are the response received dates for the documents described as 'Regular' or granted with more than 100?
SQL:
SELECT T1.response_received_date FROM Documents AS T1 JOIN Document_Types AS T2 ON T1.document_type_code  =  T2.document_type_code JOIN Grants AS T3 ON T1.grant_id  =  T3.grant_id WHERE T2.document_description  =  'Regular' OR T3.grant_amount  >  100

Question: What is the response received date for the document described as Regular that was granted more than 100 dollars?
SQL:
SELECT T1.response_received_date FROM Documents AS T1 JOIN Document_Types AS T2 ON T1.document_type_code  =  T2.document_type_code JOIN Grants AS T3 ON T1.grant_id  =  T3.grant_id WHERE T2.document_description  =  'Regular' OR T3.grant_amount  >  100

Question: List the project details of the projects which did not hire any staff for a researcher role.
SQL:
SELECT project_details FROM Projects WHERE project_id NOT IN ( SELECT project_id FROM Project_Staff WHERE role_code  =  'researcher' )

Question: What are the details for all projects that did not hire any staff in a research role?
SQL:
SELECT project_details FROM Projects WHERE project_id NOT IN ( SELECT project_id FROM Project_Staff WHERE role_code  =  'researcher' )

Question: What are the task details, task id and project id for the projects which are detailed as 'omnis' or  have more than 2 outcomes?
SQL:
SELECT T1.task_details ,  T1.task_id ,  T2.project_id FROM Tasks AS T1 JOIN Projects AS T2 ON T1.project_id  =  T2.project_id WHERE T2.project_details  =  'omnis' UNION SELECT T1.task_details ,  T1.task_id ,  T2.project_id FROM Tasks AS T1 JOIN Projects AS T2 ON T1.project_id  =  T2.project_id JOIN Project_outcomes AS T3 ON T2.project_id  =  T3.project_id GROUP BY T2.project_id HAVING count(*)  >  2

Question: What are the task details, task ids, and project ids for the progrects that are detailed as 'omnis' or have at least 3 outcomes?
SQL:
SELECT T1.task_details ,  T1.task_id ,  T2.project_id FROM Tasks AS T1 JOIN Projects AS T2 ON T1.project_id  =  T2.project_id WHERE T2.project_details  =  'omnis' UNION SELECT T1.task_details ,  T1.task_id ,  T2.project_id FROM Tasks AS T1 JOIN Projects AS T2 ON T1.project_id  =  T2.project_id JOIN Project_outcomes AS T3 ON T2.project_id  =  T3.project_id GROUP BY T2.project_id HAVING count(*)  >  2

Question: When do all the researcher role staff start to work, and when do they stop working?
SQL:
SELECT date_from ,  date_to FROM Project_Staff WHERE role_code  =  'researcher'

Question: When did researchers start and stop working?
SQL:
SELECT date_from ,  date_to FROM Project_Staff WHERE role_code  =  'researcher'

Question: How many kinds of roles are there for the staff?
SQL:
SELECT count(DISTINCT role_code) FROM Project_Staff

Question: How many different roles are there on the project staff?
SQL:
SELECT count(DISTINCT role_code) FROM Project_Staff

Question: What is the total amount of grants given by each organisations? Also list the organisation id.
SQL:
SELECT sum(grant_amount) ,  organisation_id FROM Grants GROUP BY organisation_id

Question: What is the total amount of grant money given to each organization and what is its id?
SQL:
SELECT sum(grant_amount) ,  organisation_id FROM Grants GROUP BY organisation_id

Question: List the project details of the projects with the research outcome described with the substring 'Published'.
SQL:
SELECT T1.project_details FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id JOIN Research_outcomes AS T3 ON T2.outcome_code  =  T3.outcome_code WHERE T3.outcome_description LIKE '%Published%'

Question: What are the details for the project whose research has been published?
SQL:
SELECT T1.project_details FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id JOIN Research_outcomes AS T3 ON T2.outcome_code  =  T3.outcome_code WHERE T3.outcome_description LIKE '%Published%'

Question: How many staff does each project has? List the project id and the number in an ascending order.
SQL:
SELECT T1.project_id ,  count(*) FROM Project_Staff AS T1 JOIN Projects AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.project_id ORDER BY count(*) ASC

Question: For each project id, how many staff does it have? List them in increasing order.
SQL:
SELECT T1.project_id ,  count(*) FROM Project_Staff AS T1 JOIN Projects AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.project_id ORDER BY count(*) ASC

Question: What is the complete description of the researcher role.
SQL:
SELECT role_description FROM Staff_Roles WHERE role_code  =  'researcher'

Question: What is the complete description of the job of a researcher?
SQL:
SELECT role_description FROM Staff_Roles WHERE role_code  =  'researcher'

Question: When did the first staff for the projects started working?
SQL:
SELECT date_from FROM Project_Staff ORDER BY date_from ASC LIMIT 1

Question: When did the first staff member start working?
SQL:
SELECT date_from FROM Project_Staff ORDER BY date_from ASC LIMIT 1

Question: Which project made the most number of outcomes? List the project details and the project id.
SQL:
SELECT T1.project_details ,  T1.project_id FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.project_id ORDER BY count(*) DESC LIMIT 1

Question: What are the details and id of the project with the most outcomes?
SQL:
SELECT T1.project_details ,  T1.project_id FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.project_id ORDER BY count(*) DESC LIMIT 1

Question: Which projects have no outcome? List the project details.
SQL:
SELECT project_details FROM Projects WHERE project_id NOT IN ( SELECT project_id FROM Project_outcomes )

Question: What are the details of the project with no outcomes?
SQL:
SELECT project_details FROM Projects WHERE project_id NOT IN ( SELECT project_id FROM Project_outcomes )

Question: Which organisation hired the most number of research staff? List the organisation id, type and detail.
SQL:
SELECT T1.organisation_id ,  T1.organisation_type ,  T1.organisation_details FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1

Question: What are the ids, types, and details of the organization with the most research staff?
SQL:
SELECT T1.organisation_id ,  T1.organisation_type ,  T1.organisation_details FROM Organisations AS T1 JOIN Research_Staff AS T2 ON T1.organisation_id  =  T2.employer_organisation_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1

Question: Show the role description and the id of the project staff involved in most number of project outcomes?
SQL:
SELECT T1.role_description ,  T2.staff_id FROM Staff_Roles AS T1 JOIN Project_Staff AS T2 ON T1.role_code  =  T2.role_code JOIN Project_outcomes AS T3 ON T2.project_id  =  T3.project_id GROUP BY T2.staff_id ORDER BY count(*) DESC LIMIT 1

Question: For each staff id, what is the description of the role that is involved with the most number of projects?
SQL:
SELECT T1.role_description ,  T2.staff_id FROM Staff_Roles AS T1 JOIN Project_Staff AS T2 ON T1.role_code  =  T2.role_code JOIN Project_outcomes AS T3 ON T2.project_id  =  T3.project_id GROUP BY T2.staff_id ORDER BY count(*) DESC LIMIT 1

Question: Which document type is described with the prefix 'Initial'?
SQL:
SELECT document_type_code FROM Document_Types WHERE document_description LIKE 'Initial%'

Question: What is the type of the document whose description starts with the word 'Initial'?
SQL:
SELECT document_type_code FROM Document_Types WHERE document_description LIKE 'Initial%'

Question: For grants with both documents described as 'Regular' and documents described as 'Initial Application', list its start date.
SQL:
SELECT T1.grant_start_date FROM Grants AS T1 JOIN Documents AS T2 ON T1.grant_id  =  T2.grant_id JOIN Document_Types AS T3 ON T2.document_type_code  =  T3.document_type_code WHERE T3.document_description  =  'Regular' INTERSECT SELECT T1.grant_start_date FROM Grants AS T1 JOIN Documents AS T2 ON T1.grant_id  =  T2.grant_id JOIN Document_Types AS T3 ON T2.document_type_code  =  T3.document_type_code WHERE T3.document_description  =  'Initial Application'

Question: For grants that have descriptions of Regular and Initial Applications, what are their start dates?
SQL:
SELECT T1.grant_start_date FROM Grants AS T1 JOIN Documents AS T2 ON T1.grant_id  =  T2.grant_id JOIN Document_Types AS T3 ON T2.document_type_code  =  T3.document_type_code WHERE T3.document_description  =  'Regular' INTERSECT SELECT T1.grant_start_date FROM Grants AS T1 JOIN Documents AS T2 ON T1.grant_id  =  T2.grant_id JOIN Document_Types AS T3 ON T2.document_type_code  =  T3.document_type_code WHERE T3.document_description  =  'Initial Application'

Question: How many documents can one grant have at most? List the grant id and number.
SQL:
SELECT grant_id ,  count(*) FROM Documents GROUP BY grant_id ORDER BY count(*) DESC LIMIT 1

Question: For each grant id, how many documents does it have, and which one has the most?
SQL:
SELECT grant_id ,  count(*) FROM Documents GROUP BY grant_id ORDER BY count(*) DESC LIMIT 1

Question: Find the organisation type description of the organisation detailed as 'quo'.
SQL:
SELECT T1.organisation_type_description FROM organisation_Types AS T1 JOIN Organisations AS T2 ON T1.organisation_type  =  T2.organisation_type WHERE T2.organisation_details  =  'quo'

Question: What is the type description of the organization whose detail is listed as 'quo'?
SQL:
SELECT T1.organisation_type_description FROM organisation_Types AS T1 JOIN Organisations AS T2 ON T1.organisation_type  =  T2.organisation_type WHERE T2.organisation_details  =  'quo'

Question: What are all the details of the organisations described as 'Sponsor'? Sort the result in an ascending order.
SQL:
SELECT organisation_details FROM Organisations AS T1 JOIN organisation_Types AS T2 ON T1.organisation_type  =  T2.organisation_type WHERE T2.organisation_type_description  =  'Sponsor' ORDER BY organisation_details

Question: What are the details of all organizations that are described as Sponsors and sort the results in ascending order?
SQL:
SELECT organisation_details FROM Organisations AS T1 JOIN organisation_Types AS T2 ON T1.organisation_type  =  T2.organisation_type WHERE T2.organisation_type_description  =  'Sponsor' ORDER BY organisation_details

Question: How many Patent outcomes are generated from all the projects?
SQL:
SELECT count(*) FROM Project_outcomes WHERE outcome_code  =  'Patent'

Question: How many patents outcomes were listed for all the projects?
SQL:
SELECT count(*) FROM Project_outcomes WHERE outcome_code  =  'Patent'

Question: How many project staff worked as leaders or started working before '1989-04-24 23:51:54'?
SQL:
SELECT count(*) FROM Project_Staff WHERE role_code  =  'leader' OR date_from  <  '1989-04-24 23:51:54'

Question: How many project members were leaders or started working before '1989-04-24 23:51:54'?
SQL:
SELECT count(*) FROM Project_Staff WHERE role_code  =  'leader' OR date_from  <  '1989-04-24 23:51:54'

Question: What is the last date of the staff leaving the projects?
SQL:
SELECT date_to FROM Project_Staff ORDER BY date_to DESC LIMIT 1

Question: What is the last date that a staff member left a project?
SQL:
SELECT date_to FROM Project_Staff ORDER BY date_to DESC LIMIT 1

Question: What are the result description of the project whose detail is 'sint'?
SQL:
SELECT T1.outcome_description FROM Research_outcomes AS T1 JOIN Project_outcomes AS T2 ON T1.outcome_code  =  T2.outcome_code JOIN Projects AS T3 ON T2.project_id  =  T3.project_id WHERE T3.project_details  =  'sint'

Question: What is the description for the results whose project detail is 'sint'?
SQL:
SELECT T1.outcome_description FROM Research_outcomes AS T1 JOIN Project_outcomes AS T2 ON T1.outcome_code  =  T2.outcome_code JOIN Projects AS T3 ON T2.project_id  =  T3.project_id WHERE T3.project_details  =  'sint'

Question: List the organisation id with the maximum outcome count, and the count.
SQL:
SELECT T1.organisation_id ,  count(*) FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1

Question: What is the id of the organization with the maximum number of outcomes and how many outcomes are there?
SQL:
SELECT T1.organisation_id ,  count(*) FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.organisation_id ORDER BY count(*) DESC LIMIT 1

Question: List the project details of the projects launched by the organisation
SQL:
SELECT project_details FROM Projects WHERE organisation_id IN ( SELECT organisation_id FROM Projects GROUP BY organisation_id ORDER BY count(*) DESC LIMIT 1 )

Question: What are the details for the projects which were launched by the organization with the most projects?
SQL:
SELECT project_details FROM Projects WHERE organisation_id IN ( SELECT organisation_id FROM Projects GROUP BY organisation_id ORDER BY count(*) DESC LIMIT 1 )

Question: List the research staff details, and order in ascending order.
SQL:
SELECT staff_details FROM Research_Staff ORDER BY staff_details ASC

Question: What details are there on the research staff? List the result in ascending alphabetical order.
SQL:
SELECT staff_details FROM Research_Staff ORDER BY staff_details ASC

Question: How many tasks are there in total?
SQL:
SELECT count(*) FROM Tasks

Question: How many tasks are there?
SQL:
SELECT count(*) FROM Tasks

Question: How many tasks does each project have? List the task count and the project detail.
SQL:
SELECT count(*) ,  T1.project_details FROM Projects AS T1 JOIN Tasks AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.project_id

Question: For each project id, how many tasks are there?
SQL:
SELECT count(*) ,  T1.project_details FROM Projects AS T1 JOIN Tasks AS T2 ON T1.project_id  =  T2.project_id GROUP BY T1.project_id

Question: What are the staff roles of the staff who
SQL:
SELECT role_code FROM Project_Staff WHERE date_from  >  '2003-04-19 15:06:20' AND date_to  <  '2016-03-15 00:33:18'

Question: What roles did staff members play between '2003-04-19 15:06:20' and '2016-03-15 00:33:18'?
SQL:
SELECT role_code FROM Project_Staff WHERE date_from  >  '2003-04-19 15:06:20' AND date_to  <  '2016-03-15 00:33:18'

Question: What are the descriptions of all the project outcomes?
SQL:
SELECT T1.outcome_description FROM Research_outcomes AS T1 JOIN Project_outcomes AS T2 ON T1.outcome_code  =  T2.outcome_code

Question: List the description of the outcomes for all projects.
SQL:
SELECT T1.outcome_description FROM Research_outcomes AS T1 JOIN Project_outcomes AS T2 ON T1.outcome_code  =  T2.outcome_code

Question: Which role is most common for the staff?
SQL:
SELECT role_code FROM Project_Staff GROUP BY role_code ORDER BY count(*) DESC LIMIT 1

Question: What is the most common role for the staff?
SQL:
SELECT role_code FROM Project_Staff GROUP BY role_code ORDER BY count(*) DESC LIMIT 1