MIA-PTDA-AUG2019 - Jose Matos

module-1/.vscode/settings.json

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+{
+    "python.pythonPath": "/usr/local/opt/python/bin/python3.7"
+}

module-1/lab-advanced-mysql/your-code/solutions.sql

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+-- Lab | Advanced MySQL
+
+-- Challenge 1 - Most Profiting Authors
+-- Step 1: Calculate the royalties of each sales for each author
+SELECT 
+`Title ID`, `Author ID`, `Royalty`
+
+FROM(
+SELECT 
+titleauthor.title_id AS 'Title ID',
+titleauthor.au_id AS 'Author ID',
+titles.price * sales.qty * titles.royalty/100 *titleauthor.royaltyper/100 AS 'Royalty'
+
+FROM titleauthor
+JOIN titles
+ON titleauthor.title_id = titles.title_id
+JOIN sales
+ON titleauthor.title_id = sales.title_id
+)
+AS A GROUP BY `Author ID`, `Title ID`, Royalty
+;
+
+-- Step 2: Aggregate the total royalties for each title for each author
+SELECT 
+`Title ID`, `Author ID`, `Royalty`
+
+FROM(
+SELECT 
+titleauthor.title_id AS 'Title ID',
+titleauthor.au_id AS 'Author ID',
+SUM(titles.price * sales.qty * titles.royalty/100 *titleauthor.royaltyper/100) OVER(PARTITION BY titleauthor.au_id) AS 'Royalty'
+
+FROM titleauthor
+JOIN titles
+ON titleauthor.title_id = titles.title_id
+JOIN sales
+ON titleauthor.title_id = sales.title_id
+)
+AS A GROUP BY `Author ID`, `Title ID`, Royalty
+;
+
+-- Step 3: Calculate the total profits of each author
+SELECT 
+`Author ID`, `Profit`
+
+FROM(
+SELECT 
+titleauthor.title_id AS 'Title ID',
+titleauthor.au_id AS 'Author ID',
+SUM(titles.price * sales.qty * titles.royalty/100 *titleauthor.royaltyper/100 + titles.advance) OVER(PARTITION BY titleauthor.au_id) AS 'Profit'
+
+FROM titleauthor
+JOIN titles
+ON titleauthor.title_id = titles.title_id
+JOIN sales
+ON titleauthor.title_id = sales.title_id
+)
+AS A GROUP BY `Author ID`, Profit
+ORDER BY Profit DESC
+LIMIT 3;
+
+-- Challenge 2 - Alternative Solution
+
+CREATE TEMPORARY TABLE temp1
+
+SELECT 
+titleauthor.title_id AS 'Title ID',
+titleauthor.au_id AS 'Author ID',
+SUM(titles.price * sales.qty * titles.royalty/100 *titleauthor.royaltyper/100 + titles.advance) OVER(PARTITION BY titleauthor.au_id) AS 'Profit'
+
+FROM titleauthor
+JOIN titles
+ON titleauthor.title_id = titles.title_id
+JOIN sales
+ON titleauthor.title_id = sales.title_id
+;
+
+SELECT 
+`Author ID`, `Profit`
+FROM 
+temp1
+GROUP BY `Author ID`, Profit
+ORDER BY Profit DESC
+LIMIT 3;
+
+-- Challenge 3
+
+CREATE TABLE most_profiting_authors AS
+
+SELECT
+distinct titleauthor.au_id AS 'Author ID',
+SUM(titles.price * sales.qty * titles.royalty/100 *titleauthor.royaltyper/100 + titles.advance) OVER(PARTITION BY titleauthor.au_id) AS 'Profit'
+
+FROM titleauthor
+JOIN titles
+ON titleauthor.title_id = titles.title_id
+JOIN sales
+ON titleauthor.title_id = sales.title_id
+;
+
+SELECT * FROM most_profiting_authors;