From 1b5712212bcfb32a37c7415c7100484fde2f3331 Mon Sep 17 00:00:00 2001
From: martaferreiro <125505098+martaferreiro@users.noreply.github.com>
Date: Fri, 18 Aug 2023 22:50:02 +0200
Subject: [PATCH] MartaFernandez

---
 .DS_Store               | Bin 0 -> 6148 bytes
 your-code/solutions.sql |  59 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)
 create mode 100644 .DS_Store
 create mode 100644 your-code/solutions.sql

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..829aa2e38aab0ae76bc4d332ff3259e9beb09c14
GIT binary patch
literal 6148
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z!Ebignl)`tA|f*|`)%fDXYwUvvqZ$bdD<mv6Hx>etTiyK5b=vvq~<LxAj=xlNw+`B
zvsool4S$sZd3JT`(1fn&Hh6x~`+eD$<w-J}=0n(`g?ZdRY(5`_{&b^%c3FBicFvJX
z+o+k*1!|A!Cait7_uXHv|Mc?kSwC1K%fEV97Zdam4Wy3-EhwisUDE-LFiUA1bi=QA
ztE0+2bz0f!iQ{C&dgabGM+W`zoAjrm3@8K2z)v%PJzFGdI@D1aPzIENB?Iz(Fi^qR
zW8u(#IxyHH0I&|T70l%<Avwll?6GhN4}@JR(513JVz5hx-T1iJW8u)H6Z^vl`^xN3
zC~T`^ePhFkV~08_1Ij?iz?Qpg%l?17{`?;%>6J2|4E!qwxSsTr9&X9+t(BXTz1Bbn
qP!WkM94=EZv0E`>Wh>r=T7lij1Q>fP9Kr(89|22)4$8o<GVlRBOJ-&O

literal 0
HcmV?d00001

diff --git a/your-code/solutions.sql b/your-code/solutions.sql
new file mode 100644
index 0000000..5f7f8d5
--- /dev/null
+++ b/your-code/solutions.sql
@@ -0,0 +1,59 @@
+USE publications;
+SELECT COUNT(*) FROM titleauthor;
+
+/* 1 - We have to match the 25 rows in titleauthor */
+SELECT authors.au_id AS 'Author ID', au_lname AS 'Last name', au_fname AS 'First Name', titles.title AS 'Title', publishers.pub_name AS 'Publisher'
+FROM authors
+INNER JOIN titleauthor ON authors.au_id = titleauthor.au_id
+INNER JOIN titles ON titleauthor.title_id = titles.title_id
+INNER JOIN publishers ON titles.pub_id = publishers.pub_id
+order by authors.au_id;
+
+SELECT COUNT(*) AS 'Total Rows'
+FROM authors
+INNER JOIN titleauthor ON authors.au_id = titleauthor.au_id
+INNER JOIN titles ON titleauthor.title_id = titles.title_id
+INNER JOIN publishers ON titles.pub_id = publishers.pub_id;
+
+
+/* 2 */
+SELECT authors.au_id AS 'Author ID', 
+       au_lname AS 'Last name', 
+       au_fname AS 'First Name', 
+       publishers.pub_name AS 'Publisher',
+       COUNT(titles.title) AS 'Title Count'
+FROM authors
+INNER JOIN titleauthor ON authors.au_id = titleauthor.au_id
+LEFT JOIN titles ON titleauthor.title_id = titles.title_id
+LEFT JOIN publishers ON titles.pub_id = publishers.pub_id
+GROUP BY authors.au_id, au_lname, au_fname, publishers.pub_name
+ORDER BY authors.au_id;
+
+
+/* 3 */
+SELECT authors.au_id AS 'Author ID', 
+       au_lname AS 'Last name', 
+       au_fname AS 'First Name', 
+       SUM(sales.qty) AS 'Total'
+FROM authors
+LEFT JOIN titleauthor ON authors.au_id=titleauthor.au_id
+LEFT JOIN titles ON titleauthor.title_id=titles.title_id
+LEFT JOIN sales ON titles.title_id=sales.title_id
+GROUP BY authors.au_id, authors.au_lname, authors.au_fname
+ORDER BY SUM(qty) DESC
+LIMIT 3;
+
+
+/* 4 */
+SELECT authors.au_id AS 'Author ID', 
+       au_lname AS 'Last name', 
+       au_fname AS 'First Name', 
+       COALESCE(SUM(sales.qty),0) AS 'Total'
+FROM authors
+LEFT JOIN titleauthor ON authors.au_id=titleauthor.au_id
+LEFT JOIN titles ON titleauthor.title_id=titles.title_id
+LEFT JOIN sales ON titles.title_id=sales.title_id
+GROUP BY authors.au_id, authors.au_lname, authors.au_fname
+ORDER BY SUM(qty) DESC
+
+