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');
INSERT INTO jslibraries(name, owner, description, stars, url, releases, licence, used_by, contributors, main_technology, type, release_date) VALUES ('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 LIMIT 1;
3. Get all the fields of the library that was released most recently (last).
SELECT * FROM jslibraries ORDER BY release_date DESC LIMIT 1;
4. All the libraries released before 2015.
SELECT * FROM jslibraries WHERE release_date <= '2014-12-31';
5. Get the name and the release_date of the libraries without a licence.
SELECT * FROM jslibraries WHERE release_date <= '2014-12-31';SELECT name, release_date FROM jslibraries WHERE licence IS NULL OR licence = ''
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 nam FROM jslibraries WHERE contributors >1000;
9. Get the total number of stars of all the libraries.
SELECT sum(stars) AS total_number_stars FROM jslibraries;
10. Get the average number of contributors for all the libraries.
SELECT AVG(contributors) AS average_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 it specified to store 0 ( i.e., number zero), instead of NULL.
UPDATE jslibraries SET used_by= 0 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 = INITCAP(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;