diff --git a/queries.md b/queries.md
index c3c5329..82e9ad1 100644
--- a/queries.md
+++ b/queries.md
@@ -7,6 +7,22 @@
**1. Add the `solid` and `chartjs` libraries as new rows to the `jslibraries` table.**
+```sql
+ 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');
+
+
+
+name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+---------+---------+-----------------------------------------------------------------------------------------+-------+-------------+----------+-------------+---------+--------------+-----------------+----------------+--------------
+ 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 rows)
+
+```
+
@@ -14,88 +30,259 @@
+```sql
+
+SELECT * FROM jslibraries ORDER BY release_date ASC LIMIT 1;
+
+
+
+name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+-------+---------+-----------------------------------------------------------------------------------------+-------+-------------+----------+-------------+---------+--------------+-----------------+------------+--------------
+ 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
+(1 row)
+```
+
**3. Get all the fields of the library that was released most recently (last).**
+```sql
+SELECT * FROM jslibraries ORDER BY release_date DESC LIMIT 1;
+
+
+ name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+-----------+-----------+---------------------------------------------------------------------------+-------+---------------+----------+-------------+---------+--------------+-----------------+--------------------+--------------
+ chakra-ui | chakra-ui | ⚡️ Simple, Modular & Accessible UI Components for your React Applications. | 20300 | chakra-ui.com | 2073 | MIT License | 23100 | 429 | typescript | Components Library | 2018-08-12
+(1 row)
+```
+
**4. All the libraries released before 2015.**
+```sql
+SELECT * FROM jslibraries WHERE release_date < '2015-01-01';
+
+
+name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+------------+----------------+-------------------------------------------------------------------------------------------+--------+--------------------------------------------+----------+-------------+---------+--------------+-----------------+--------------------+--------------
+ react | facebook | A declarative, efficient, and flexible JavaScript library for building user interfaces. | 174000 | reactjs.org | 138 | MIT License | 7400000 | 1501 | javascript | SPA library | 2014-08-23
+ ant-design | ant-design | VAn enterprise-class UI design language and React UI library. | 34600 | ant.design | 474 | MIT License | 233000 | 1469 | typescript | Components Library | 2012-12-16
+ victory | FormidableLabs | A collection of composable React components for building interactive data visualizations. | 9100 | http://formidable.com/open-source/victory/ | 214 | | 9700 | 148 | javascript | Charts Library | 2014-08-08
+ pug | pugjs | Pug – robust, elegant, feature rich template engine for Node.js. | 20300 | pugjs.org | 244 | MIT License | 348000 | 253 | javascript | Template engine | 2012-02-07
+ hbs | pillarjs | Express view engine wrapper for Handlebars. | 1500 | pugjs.org | 44 | MIT License | | 25 | javascript | Template engine | 2013-08-25
+ moment | moment | Parse, validate, manipulate, and display dates in javascript. | 45900 | momentjs.com | 84 | | 2500000 | 590 | javascript | Date library | 2012-10-08
+ 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
+(8 rows)
+```
+
**5. Get the `name` and the `release_date` of the libraries without a licence.**
+```sql
+SELECT name, release_date FROM jslibraries WHERE licence IS NULL;
+
+ name | release_date
+---------+--------------
+ victory | 2014-08-08
+ moment | 2012-10-08
+(2 rows)
+```
**6. Get the `name` and the `stars` from all CSS Framework libraries.**
+```sql
+SELECT name, stars FROM jslibraries WHERE type = 'CSS Framework';
+
+ name | stars
+------+-------
+(0 rows)
+```
**7. Get the `name` of the libraries where the main technology is Typescript.**
+```sql
+
+SELECT name FROM jslibraries WHERE main_technology = 'typescript';
+
+ name
+-------------------
+ styled-components
+ ant-design
+ chakra-ui
+ solid
+(4 rows)
+```
+
**8. Get the `name` and the `type` of all the libraries with more than 1000 contributors.**
+```sql
+SELECT name, type FROM jslibraries WHERE contributors > 1000;
+
+ name | type
+------------+--------------------
+ react | SPA library
+ ant-design | Components Library
+ bootstrap | CSS Framework
+(3 rows)
+
+```
**9. Get the total number of `stars` of all the libraries.**
+```sql
+SELECT SUM(stars) FROM jslibraries;
+
+ sum
+--------
+ 783300
+(1 row)
+```
**10. Get the average number of `contributors` for all the libraries.**
+```sql
+SELECT AVG(contributors) FROM jslibraries;
+
+ avg
+----------------------
+ 542.5384615384615385
+(1 row)
+
+
+```
**11. Update the `licence` field of the libriaries without a licence to store `'unknown'` instead of `NULL`.**
+```sql
+
+UPDATE jslibraries SET licence = 'unknown' WHERE licence IS NULL;
+UPDATE 2
+
+jslab=# SELECT name, licence FROM jslibraries WHERE licence = 'unknown';
+ name | licence
+---------+---------
+ victory | unknown
+ moment | unknown
+(2 rows)
+
+```
**12. Update the `used_by` field of the libraries that don't have this information to store `'unknown'` instead of `NULL`.**
+```sql
+UPDATE jslibraries SET used_by = 0 WHERE used_by IS NULL;
+UPDATE 2
+
+
+name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+---------+----------------+-------------------------------------------------------------------------------------------+-------+--------------------------------------------+----------+---------+---------+--------------+-----------------+----------------+--------------
+ victory | FormidableLabs | A collection of composable React components for building interactive data visualizations. | 9100 | http://formidable.com/open-source/victory/ | 214 | unknown | 9700 | 148 | javascript | Charts Library | 2014-08-08
+ moment | moment | Parse, validate, manipulate, and display dates in javascript. | 45900 | momentjs.com | 84 | unknown | 2500000 | 590 | javascript | Date library | 2012-10-08
+(2 rows)
+
+
+```
**13. Update all the records to capitalize the string provided in the `main_technology` field.**
+```sql
+UPDATE jslibraries SET main_technology = INITCAP(main_technology);
+UPDATE 13
+
+
+SELECT DISTINCT main_technology FROM jslibraries;
+
+ main_technology
+-----------------
+ Typescript
+ Javascript
+(2 rows)
+
+```
**14. Delete all the records where `licence` is `'unknown'`.**
+```sql
+
+DELETE FROM jslibraries WHERE licence = 'unknown';
+DELETE 2
+
+SELECT * FROM jslibraries WHERE licence = 'unknown';
+ name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+------+-------+-------------+-------+-----+----------+---------+---------+--------------+-----------------+------+--------------
+(0 rows)
+
+
+```
**15. Delete all the records with 10000 or less `stars`.**
+```sql
+DELETE FROM jslibraries WHERE stars <= 10000;
+DELETE 1
+
+SELECT * FROM jslibraries WHERE stars <= 10000;
+ name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+------+-------+-------------+-------+-----+----------+---------+---------+--------------+-----------------+------+--------------
+(0 rows)
+
+
+```
**16. Delete all the records with less than 100 `releases`.**
+```sql
+DELETE FROM jslibraries WHERE releases < 100;
+DELETE 3
+
+SELECT * FROM jslibraries WHERE releases < 100;
+ name | owner | description | stars | url | releases | licence | used_by | contributors | main_technology | type | release_date
+------+-------+-------------+-------+-----+----------+---------+---------+--------------+-----------------+------+--------------
+(0 rows)
+
+
+```