From 9637f965e411c4209f80fc0496a06dbc63139e6b Mon Sep 17 00:00:00 2001
From: Martin Eden <martineden355@gmail.com>
Date: Tue, 6 Jun 2023 16:14:43 +0200
Subject: [PATCH] Add solutions.sql file

---
 your-code/solutions.sql | 50 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 your-code/solutions.sql

diff --git a/your-code/solutions.sql b/your-code/solutions.sql
new file mode 100644
index 0000000..d8212cc
--- /dev/null
+++ b/your-code/solutions.sql
@@ -0,0 +1,50 @@
+USE publications;
+
+# Challenge 1 - Who have published what at where?
+
+CREATE TABLE table_challenge1 AS
+SELECT joined_table2.au_id AS 'AUTHOR ID', joined_table2.au_lname AS 'LAST NAME', joined_table2.au_fname AS 'FIRST NAME', joined_table2.title AS 'TITLE', publishers.pub_name AS 'PUBLISHER'
+FROM
+  (SELECT joined_table1.au_id, joined_table1.au_lname, joined_table1.au_fname, titles.title, titles.pub_id
+    FROM
+      (SELECT authors.au_id, authors.au_lname, authors.au_fname, titleauthor.title_id
+        FROM authors
+        LEFT JOIN titleauthor ON authors.au_id = titleauthor.au_id
+      ) AS joined_table1
+    LEFT JOIN titles ON joined_table1.title_id = titles.title_id
+  ) AS joined_table2
+LEFT JOIN publishers ON joined_table2.pub_id = publishers.pub_id;
+
+SELECT * FROM table_challenge1;
+
+# Challenge 2 - Who Have Published How Many At Where?
+
+SELECT COUNT(*) AS total_records FROM titleauthor;
+
+SELECT `AUTHOR ID`, `LAST NAME`, `FIRST NAME`, `PUBLISHER`, COUNT(`TITLE`) AS `TITLE COUNT`
+FROM table_challenge1
+GROUP BY `AUTHOR ID`, `LAST NAME`, `FIRST NAME`, `PUBLISHER`;
+
+
+SELECT SUM(`TITLE COUNT`) AS TOTAL
+FROM (
+	SELECT `AUTHOR ID`, `LAST NAME`, `FIRST NAME`, `PUBLISHER`, COUNT(`TITLE`) AS `TITLE COUNT`
+	FROM table_challenge1
+	GROUP BY `AUTHOR ID`, `LAST NAME`, `FIRST NAME`, `PUBLISHER`
+    ) AS table_challenge2;
+    
+# Challenge 3 - Best Selling Authors
+
+SELECT `AUTHOR ID`, `LAST NAME`, `FIRST NAME`, COUNT(`TITLE`) AS `TOTAL`
+FROM table_challenge1
+GROUP BY `AUTHOR ID`, `LAST NAME`, `FIRST NAME`
+ORDER BY `TOTAL` DESC
+LIMIT 3;
+
+
+# Challenge 4 - Best Selling Authors Ranking
+
+SELECT `AUTHOR ID`, `LAST NAME`, `FIRST NAME`, COUNT(`TITLE`) AS `TOTAL`
+FROM table_challenge1
+GROUP BY `AUTHOR ID`, `LAST NAME`, `FIRST NAME`
+ORDER BY `TOTAL` DESC;