From 85fb6e378d20ef8102067b54e4b19f527c13fd31 Mon Sep 17 00:00:00 2001
From: ArturGR3 <arturgrygorian3@gmail.com>
Date: Mon, 10 Mar 2025 11:16:27 +0100
Subject: [PATCH] feat: Complete SQL queries for JS libraries database
 operations

---
 queries.md | 79 ++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 62 insertions(+), 17 deletions(-)

diff --git a/queries.md b/queries.md
index c3c5329..725a08b 100644
--- a/queries.md
+++ b/queries.md
@@ -6,96 +6,141 @@
 
 **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
+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) from jslibraries
 
 <br>
 
 **10. Get the average number of `contributors` for all the libraries.**
 
-<!-- Your Query Goes Here -->
-
+select 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 this information to store `'unknown'` instead of `NULL`.**
 
-<!-- Your Query Goes Here -->
+update jslibraries
+set used_by = 'unknown'
+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 = initcap(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>