From 0d9af64d6ad35f52727dfd56f9c6fa3d973e6441 Mon Sep 17 00:00:00 2001
From: aoge2716 <aoge2716@gmail.com>
Date: Tue, 18 Mar 2025 03:04:34 +0100
Subject: [PATCH] completed all iterations

---
 queries.md | 51 ++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 36 insertions(+), 15 deletions(-)

diff --git a/queries.md b/queries.md
index 4bee1ef..1b38a46 100644
--- a/queries.md
+++ b/queries.md
@@ -7,95 +7,116 @@
 **1. Add the `solid` and `chartjs` libraries as new rows to the `jslibraries` table.**
 
 <!-- Your Query Goes Here -->
-
+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');
 <br>
 
 **2. Get all the fields of the library that was released earliest (first).**
 
 <!-- Your Query Goes Here -->
+select * from jslibraries
+order by release_date asc
+limit 1;
 
 <br>
 
 **3. Get all the fields of the library that was released most recently (last).**
 
 <!-- Your Query Goes Here -->
-
+select * from jslibraries
+order by release_date desc
+limit 1;
 <br>
 
 **4. All the libraries released before 2015.**
 
 <!-- Your Query Goes Here -->
-
+select * from jslibraries
+where release_date< '2015-01-01';
 <br>
 
 **5. Get the `name` and the `release_date` of the libraries without a licence.**
 
 <!-- Your Query Goes Here -->
-
+select name, release_date from jslibraries
+where licence is null;
 <br>
 
 **6. Get the `name` and the `stars` from all CSS Framework libraries.**
 
 <!-- Your Query Goes Here -->
-
+select name, stars from jslibraries 
+where type='CSS Framework';
 <br>
 
 **7. Get the `name` of the libraries where the main technology is Typescript.**
 
 <!-- Your Query Goes Here -->
-
+select name from jslibraries where main_technology = 'typescript';
 <br>
 
 **8. Get the `name` and the `type` of all the libraries with more than 1000 contributors.**
 
 <!-- Your Query Goes Here -->
-
+select name, type from jslibraries where contributors > 1000;
 <br>
 
 **9. Get the total number of `stars` of all the libraries.**
 
 <!-- Your Query Goes Here -->
-
+select sum(stars) as total_stars from jslibraries;
 <br>
 
 **10. Get the average number of `contributors` for all the libraries.**
 
 <!-- Your Query Goes Here -->
-
+select avg(contributors) as avg_contributors from jslibraries; 
 <br>
 
 **11. Update the `licence` field of the libriaries without a licence to store `'unknown'` instead of `NULL`.**
 
 <!-- Your Query Goes Here -->
-
+update jslibraries
+set licence = 'unknown'
+where licence is null;
 <br>
 
 **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`.**
 
 <!-- Your Query Goes Here -->
-
+update jslibraries
+set used_by = 0
+where used_by is null;
 <br>
 
 **13. Update all the records to capitalize the string provided in the `main_technology` field.**
 
 <!-- Your Query Goes Here -->
-
+update jslibraries 
+set main_technology = upper(main_technology);
 <br>
 
 **14. Delete all the records where `licence` is `'unknown'`.**
 
 <!-- Your Query Goes Here -->
-
+delete from jslibraries 
+where licence = 'unknown';
 <br>
 
 **15. Delete all the records with 10000 or less `stars`.**
 
 <!-- Your Query Goes Here -->
-
+delete from jslibraries
+where stars<= 10000;
 <br>
 
 **16. Delete all the records with less than 100 `releases`.**
 
 <!-- Your Query Goes Here -->
-
+delete from jslibraries 
+where releases < 100;
 <br>