1. Add the solid and chartjs libraries as new rows to the jslibraries table.
INSERT INTO jslibraries (name, owner, description, stars, url, releases, licence, used_by, contributors, main_technology, type, release_date)
VALUES
('solid', 'solidjs', 'A declarative, efficient, and flexible JavaScript library for building user interfaces.', 10700, 'solidjs.com', 194, 'MIT License', 624, 73, 'typescript', 'UI Library', '2011-08-13'),
('chartjs', 'chartjs', 'Simple HTML5 Charts using the canvas tag.', 54700, 'chartjs.org', 85, 'MIT License', 414000, 377, 'javascript', 'Charts Library', '2011-11-02');
2. Get all the fields of the library that was released earliest (first).
SELECT * FROM jslibraries ORDER BY release_date ASC
3. Get all the fields of the library that was released most recently (last).
SELECT * FROM jslibraries ORDER BY release_date DESC
4. All the libraries released before 2015.
SELECT * FROM jslibraries WHERE release_date < '2015-01-01';
5. Get the name and the release_date of the libraries without a licence.
SELECT name, release_date FROM jslibraries WHERE licence IS NULL
6. Get the name and the stars from all CSS Framework libraries.
SELECT name, stars FROM jslibraries WHERE type = 'CSS Framework'
7. Get the name of the libraries where the main technology is Typescript.
SELECT name FROM jslibraries WHERE main_technology = 'typescript'
8. Get the name and the type of all the libraries with more than 1000 contributors.
SELECT name, type FROM jslibraries WHERE contributors > 1000
9. Get the total number of stars of all the libraries.
SELECT SUM (stars) AS total_stars FROM jslibraries
10. Get the average number of contributors for all the libraries.
SELECT AVG(contributors) FROM jslibraries;
11. Update the licence field of the libriaries without a licence to store 'unknown' instead of NULL.
UPDATE jslibraries SET licence='unknown' Where licence IS NULL;
12. Update the used_by field of the libraries that don't have this information to store 'unknown' instead of NULL.
UPDATE jslibraries SET used_by='unknown' Where used_by IS NULL;
13. Update all the records to capitalize the string provided in the main_technology field.
UPDATE jslibraries SET main_technology = UPPER(main_technology);
14. Delete all the records where licence is 'unknown'.
DELETE FROM jslibraries WHERE licence = 'unknown';
15. Delete all the records with 10000 or less stars.
DELETE FROM jslibraries WHERE stars <= 10000;
16. Delete all the records with less than 100 releases.
DELETE FROM jslibraries WHERE releases < 100;