From ea7c5d070ad4324c009b95900103450923b7c62a Mon Sep 17 00:00:00 2001
From: Sorrel Harriet <s.harriet@gold.ac.uk>
Date: Fri, 4 Nov 2016 14:39:26 +0000
Subject: [PATCH] fixing minor discrepencies
---
lab-3/music-store-app/sql/queries.sql | 3 +--
lab-5/music-store-app/index.php | 1 -
lab-5/music-store-app/sql/queries.sql | 3 +--
3 files changed, 2 insertions(+), 5 deletions(-)
mode change 100644 => 100755 lab-3/music-store-app/sql/queries.sql
diff --git a/lab-3/music-store-app/sql/queries.sql b/lab-3/music-store-app/sql/queries.sql
old mode 100644
new mode 100755
index 50ec236..231a6e8
--- a/lab-3/music-store-app/sql/queries.sql
+++ b/lab-3/music-store-app/sql/queries.sql
@@ -28,6 +28,7 @@ INNER JOIN Artist
ON Album.artist_id=Artist.id
INNER JOIN Genre
ON Album.genre_id=Genre.id
+GROUP BY title /* group by album title to avoid duplicate rows */
ORDER BY title ASC;
/* 1c. Retrieve a list of Albums
@@ -37,8 +38,6 @@ Include ALL albums, even those without tracks.
Order by title (a-z) */
SELECT Album.title, Album.price, Artist.first_name, Artist.last_name, Genre.name AS genre, (SELECT COUNT(*) FROM Track WHERE Album.upc=Track.album_upc) AS num_tracks
FROM Album /* notice the nested query, aggregate function and aliases! */
-LEFT JOIN Track /* LEFT JOIN causes all Albums to be returned, even when no matching record in Track table */
- ON Album.upc=Track.album_upc
INNER JOIN Artist
ON Album.artist_id=Artist.id
INNER JOIN Genre
diff --git a/lab-5/music-store-app/index.php b/lab-5/music-store-app/index.php
index de97e70..19078c7 100755
--- a/lab-5/music-store-app/index.php
+++ b/lab-5/music-store-app/index.php
@@ -17,7 +17,6 @@ if (mysqli_connect_errno()) {
// define the SQL query to run (from lab 3!)
$sql = "SELECT Album.title, Album.price, Artist.first_name, Artist.last_name, Genre.name AS genre, (SELECT COUNT(*) FROM Track WHERE Album.upc=Track.album_upc) AS num_tracks FROM Album
-LEFT JOIN Track ON Album.upc=Track.album_upc
INNER JOIN Artist
ON Album.artist_id=Artist.id
INNER JOIN Genre
diff --git a/lab-5/music-store-app/sql/queries.sql b/lab-5/music-store-app/sql/queries.sql
index 50ec236..231a6e8 100755
--- a/lab-5/music-store-app/sql/queries.sql
+++ b/lab-5/music-store-app/sql/queries.sql
@@ -28,6 +28,7 @@ INNER JOIN Artist
ON Album.artist_id=Artist.id
INNER JOIN Genre
ON Album.genre_id=Genre.id
+GROUP BY title /* group by album title to avoid duplicate rows */
ORDER BY title ASC;
/* 1c. Retrieve a list of Albums
@@ -37,8 +38,6 @@ Include ALL albums, even those without tracks.
Order by title (a-z) */
SELECT Album.title, Album.price, Artist.first_name, Artist.last_name, Genre.name AS genre, (SELECT COUNT(*) FROM Track WHERE Album.upc=Track.album_upc) AS num_tracks
FROM Album /* notice the nested query, aggregate function and aliases! */
-LEFT JOIN Track /* LEFT JOIN causes all Albums to be returned, even when no matching record in Track table */
- ON Album.upc=Track.album_upc
INNER JOIN Artist
ON Album.artist_id=Artist.id
INNER JOIN Genre
--
GitLab