- Database coursework 2
- Student: Li-Hsin Liang
- Student ID: LIA21510865
- Coursework Link
We have learned in class how to complete the database with phpMyAdmin. However, I thought it would be great to have access to additional database tools. Therefore, this coursework is using database IDE (Integrated Development Environment) DataGrip to complete. For the database server, instead of using XAMPP, I downloaded MySQL to my local machine and connected the database to DataGrip.
create table accounts
(
account_id bigint not null
primary key,
name varchar(1024) null,
email varchar(512) null,
password char(8) null,
role varchar(40) null,
favourites bigint null,
followers int null,
likes bigint null
);
create table commission_policy
(
commission_policy_id int not null
primary key,
rule text null,
amount double null
);
create table followers
(
follower_id int not null
primary key,
time date null,
id_account bigint null,
id_account_follower bigint null,
constraint followers_ibfk_1
foreign key (id_account) references accounts (account_id),
constraint followers_ibfk_2
foreign key (id_account_follower) references accounts (account_id)
);
create index id_account
on followers (id_account);
create index id_account_follower
on followers (id_account_follower);
create table images
(
image_id bigint not null
primary key,
caption varchar(128) null,
alt varchar(128) null,
url varchar(512) null
);
create table location
(
location_id bigint not null
primary key,
name varchar(128) null,
lat double null,
lon double null
);
create table promotion
(
promotion_id bigint not null
primary key,
start_date date null,
end_date date null,
voucher_code varchar(512) null
);
create table reviews
(
review_id bigint not null
primary key,
rating smallint null,
comments text null,
id_account bigint null,
constraint reviews_ibfk_1
foreign key (id_account) references accounts (account_id)
);
create table comments
(
comment_id bigint not null
primary key,
comment text null,
id_review bigint null,
id_account bigint null,
constraint comments_ibfk_1
foreign key (id_review) references reviews (review_id),
constraint comments_ibfk_2
foreign key (id_account) references accounts (account_id)
);
create index id_account
on comments (id_account);
create index id_review
on comments (id_review);
create table posts
(
post_id bigint not null
primary key,
date date null,
title varchar(128) null,
description text null,
url varchar(512) null,
views bigint null,
likes bigint null,
id_image bigint null,
id_location bigint null,
id_review bigint null,
id_promotion bigint null,
id_commission_policy int null,
id_account bigint null,
constraint posts_ibfk_1
foreign key (id_image) references images (image_id),
constraint posts_ibfk_2
foreign key (id_location) references location (location_id),
constraint posts_ibfk_3
foreign key (id_review) references reviews (review_id),
constraint posts_ibfk_4
foreign key (id_promotion) references promotion (promotion_id),
constraint posts_ibfk_5
foreign key (id_review) references reviews (review_id),
constraint posts_ibfk_6
foreign key (id_commission_policy) references commission_policy (commission_policy_id),
constraint posts_ibfk_7
foreign key (id_account) references accounts (account_id)
);
create table favourites
(
favourite_id int not null
primary key,
time date null,
id_post bigint null,
id_account bigint null,
constraint favourites_ibfk_1
foreign key (id_post) references posts (post_id),
constraint favourites_ibfk_2
foreign key (id_account) references accounts (account_id)
);
create index id_account
on favourites (id_account);
create index id_post
on favourites (id_post);
create table likes
(
like_id bigint not null
primary key,
time date null,
id_post bigint null,
id_account bigint null,
constraint likes_ibfk_1
foreign key (id_post) references posts (post_id),
constraint likes_ibfk_2
foreign key (id_account) references accounts (account_id)
);
create index id_account
on likes (id_account);
create index id_post
on likes (id_post);
create index id_account
on posts (id_account);
create index id_commission_policy
on posts (id_commission_policy);
create index id_image
on posts (id_image);
create index id_location
on posts (id_location);
create index id_promotion
on posts (id_promotion);
create index id_review
on posts (id_review);
create index id_account
on reviews (id_account);
create table transaction
(
transaction_id bigint not null
primary key,
order_no varchar(128) null,
commission double null,
amount double null,
id_account bigint null,
id_commission_policy int null,
constraint transaction_ibfk_1
foreign key (id_account) references accounts (account_id),
constraint transaction_ibfk_2
foreign key (id_commission_policy) references commission_policy (commission_policy_id)
);
create index id_account
on transaction (id_account);
create index id_commission_policy
on transaction (id_commission_policy);
create table views
(
view_id bigint not null
primary key,
views bigint null,
first_viewed_time date null,
last_viewed_time date null,
id_post bigint null,
id_account bigint null,
constraint views_ibfk_1
foreign key (id_post) references posts (post_id),
constraint views_ibfk_2
foreign key (id_account) references accounts (account_id)
);
create index id_account
on views (id_account);
create index id_post
on views (id_post);
INSERT INTO ohmai.images (image_id, caption, alt, url)
VALUES (1, 'Cetaphil face wash', 'Cetaphil face wash', 'www.cetaphilfacewash.com');
INSERT INTO ohmai.images (image_id, caption, alt, url)
VALUES (2, 'Diptyque fig perfume', 'Diptyque fig perfume', 'www.diptyquefigperfume.com');
INSERT INTO ohmai.images (image_id, caption, alt, url)
VALUES (3, 'Evelom cleansing gel', 'Evelom cleansing gel', 'www.evelomcleansinggel.com');
INSERT INTO ohmai.images (image_id, caption, alt, url)
VALUES (4, 'Nars powder pressed', 'Nars powder pressed', 'www.Narspowderpressed.com');
INSERT INTO ohmai.images (image_id, caption, alt, url)
VALUES (5, 'Foreo bear mini', 'Foreo bear mini', 'www.foreobearmini.com');
INSERT INTO ohmai.location (location_id, name, lat, lon)
VALUES (1, 'Putney,London', 51.45979464520346, -0.21413996177785424);
INSERT INTO ohmai.location (location_id, name, lat, lon)
VALUES (2, 'Clapham Junction,London', 51.464174698356544, -0.170092617070423);
INSERT INTO ohmai.location (location_id, name, lat, lon)
VALUES (3, 'Roehampton,London', 51.44872695351816, -0.23982947219228684);
INSERT INTO ohmai.location (location_id, name, lat, lon)
VALUES (4, 'Roehampton,London', 51.44872695351816, -0.23982947219228684);
INSERT INTO ohmai.promotion (promotion_id, start_date, end_date, voucher_code)
VALUES (1, '2023-01-15', '2024-02-15', 'NEW10');
INSERT INTO ohmai.promotion (promotion_id, start_date, end_date, voucher_code)
VALUES (2, '2023-01-10', '2023-01-31', 'NEWBIE');
INSERT INTO ohmai.promotion (promotion_id, start_date, end_date, voucher_code)
VALUES (3, '2023-01-15', '2024-02-15', 'APP20');
INSERT INTO ohmai.promotion (promotion_id, start_date, end_date, voucher_code)
VALUES (4, '2023-11-15', '2023-12-01', 'BFPARTY');
INSERT INTO ohmai.promotion (promotion_id, start_date, end_date, voucher_code)
VALUES (5, '2023-04-10', '2023-08-10', 'HOLIDAY25');
INSERT INTO ohmai.commission_policy (commission_policy_id, rule, amount)
VALUES (1, 'Join Account', 5);
INSERT INTO ohmai.commission_policy (commission_policy_id, rule, amount)
VALUES (2, 'Publish 10 posts', 5);
INSERT INTO ohmai.commission_policy (commission_policy_id, rule, amount)
VALUES (3, 'Publish 20 posts', 15);
INSERT INTO ohmai.commission_policy (commission_policy_id, rule, amount)
VALUES (4, 'Refer a friend', 20);
INSERT INTO ohmai.accounts (account_id, name, email, password, role, favourites, followers, likes)
VALUES (1, 'Cindy', 'cindy@gmail.com', '12345', 'reviewer', 45, 3, 58);
INSERT INTO ohmai.accounts (account_id, name, email, password, role, favourites, followers, likes)
VALUES (2, 'Mladen', 'mladen@gmail.com', '456', 'reviewer', 16, 2, 38);
INSERT INTO ohmai.accounts (account_id, name, email, password, role, favourites, followers, likes)
VALUES (3, 'Joan', 'joan@gmail.com', '789', 'reviewer', 23, 1, 68);
INSERT INTO ohmai.accounts (account_id, name, email, password, role, favourites, followers, likes)
VALUES (4, 'Lihsin', 'lihsin@gmail.com', '101', 'admin', 82, 1, 98);
INSERT INTO ohmai.accounts (account_id, name, email, password, role, favourites, followers, likes)
VALUES (5, 'Ben', 'ben@gmail.com', '112', 'reviewer', 10, 2, 5);
INSERT INTO ohmai.reviews (review_id, rating, comments, id_account)
VALUES (1, 4, 'I bought the item immediately', 1);
INSERT INTO ohmai.reviews (review_id, rating, comments, id_account)
VALUES (2, 5, 'Amazing product, I use it for so long ', 2);
INSERT INTO ohmai.reviews (review_id, rating, comments, id_account)
VALUES (3, 3, 'Use it once, just average, probably not going to by again ', 2);
INSERT INTO ohmai.reviews (review_id, rating, comments, id_account)
VALUES (4, 4, 'Great product, I want to try it ', 3);
INSERT INTO ohmai.reviews (review_id, rating, comments, id_account)
VALUES (5, 4, 'Good value of product ', 4);
INSERT INTO ohmai.posts (post_id, date, title, description, url, views, likes, id_image, id_location, id_review,
id_promotion, id_commission_policy, id_account)
VALUES (1, '2022-02-14', 'Cetaphil face wash', 'Great product, helpful for oily skin',
'https://www.ohmai.co/posts/7lI6zhYKoAUdJFohcAQj', 10, 1, 1, 1, 1, 1, 1, 1);
INSERT INTO ohmai.posts (post_id, date, title, description, url, views, likes, id_image, id_location, id_review,
id_promotion, id_commission_policy, id_account)
VALUES (2, '2022-02-14', 'Diptyque fig perfume', 'Very special perfume',
'https://www.ohmai.co/posts/9BPED0F3Lrt5AoW7p5u5', 12, 1, 2, 2, 2, 2, 2, 2);
INSERT INTO ohmai.posts (post_id, date, title, description, url, views, likes, id_image, id_location, id_review,
id_promotion, id_commission_policy, id_account)
VALUES (3, '2022-05-21', 'EVELOM cleansing gel', 'Clean well! and reduce black head',
'https://www.ohmai.co/posts/A5XfsVL71jZNe0LAzBnz', 10, 5, 3, 3, 3, 1, 1, 3);
INSERT INTO ohmai.posts (post_id, date, title, description, url, views, likes, id_image, id_location, id_review,
id_promotion, id_commission_policy, id_account)
VALUES (4, '2022-07-04', 'Nars powder pressed',
'Like this powder pressed but the size is too small, will by the full size next time',
'https://www.ohmai.co/posts/CwEVQEZ8IIxVAnC7IIk8', 12, 2, 4, 3, 4, 2, 2, 3);
INSERT INTO ohmai.posts (post_id, date, title, description, url, views, likes, id_image, id_location, id_review,
id_promotion, id_commission_policy, id_account)
VALUES (5, '2022-01-10', 'Foreo bear mini', 'Easy to carry and work effectively!',
'https://www.ohmai.co/posts/F0oKqEkWeaUtT35aUosJ', 5, 2, 5, 4, 5, 1, 1, 4);
INSERT INTO ohmai.favourites (favourite_id, time, id_post, id_account)
VALUES (1, '2022-02-01', 1, 1);
INSERT INTO ohmai.favourites (favourite_id, time, id_post, id_account)
VALUES (2, '2022-02-21', 2, 1);
INSERT INTO ohmai.favourites (favourite_id, time, id_post, id_account)
VALUES (3, '2022-03-01', 3, 2);
INSERT INTO ohmai.favourites (favourite_id, time, id_post, id_account)
VALUES (4, '2022-05-05', 4, 3);
INSERT INTO ohmai.favourites (favourite_id, time, id_post, id_account)
VALUES (5, '2022-08-14', 1, 4);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (1, '2022-01-01', 1, 1);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (2, '2022-01-01', 2, 1);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (3, '2022-01-01', 3, 2);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (6, '2022-05-11', 3, 1);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (9, '2022-05-11', 3, 3);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (10, '2022-06-02', 3, 4);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (11, '2022-10-01', 3, 5);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (4, '2022-01-01', 4, 3);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (7, '2022-06-02', 4, 1);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (8, '2022-10-01', 5, 1);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (12, '2023-01-02', 5, 2);
INSERT INTO ohmai.likes (like_id, time, id_post, id_account)
VALUES (5, '2022-01-01', 5, 4);
INSERT INTO ohmai.transaction (transaction_id, order_no, commission, amount, id_account, id_commission_policy)
VALUES (1, 101, 5, 120, 1, 1);
INSERT INTO ohmai.transaction (transaction_id, order_no, commission, amount, id_account, id_commission_policy)
VALUES (2, 102, 5, 230, 2, 2);
INSERT INTO ohmai.transaction (transaction_id, order_no, commission, amount, id_account, id_commission_policy)
VALUES (3, 103, 15, 99, 3, 3);
INSERT INTO ohmai.transaction (transaction_id, order_no, commission, amount, id_account, id_commission_policy)
VALUES (4, 104, 20, 43, 4, 4);
INSERT INTO ohmai.transaction (transaction_id, order_no, commission, amount, id_account, id_commission_policy)
VALUES (5, 105, 5, 58, 3, 1);
INSERT INTO ohmai.views (view_id, views, first_viewed_time, last_viewed_time, id_post, id_account)
VALUES (1, 40, '2022-01-03', '2022-01-04', 1, 2);
INSERT INTO ohmai.views (view_id, views, first_viewed_time, last_viewed_time, id_post, id_account)
VALUES (2, 12, '2022-02-13', '2022-02-14', 2, 3);
INSERT INTO ohmai.views (view_id, views, first_viewed_time, last_viewed_time, id_post, id_account)
VALUES (3, 36, '2022-02-14', '2022-02-15', 2, 4);
INSERT INTO ohmai.views (view_id, views, first_viewed_time, last_viewed_time, id_post, id_account)
VALUES (4, 23, '2022-07-30', '2022-07-31', 3, 5);
INSERT INTO ohmai.views (view_id, views, first_viewed_time, last_viewed_time, id_post, id_account)
VALUES (5, 13, '2022-10-22', '2022-10-23', 4, 1);
INSERT INTO ohmai.views (view_id, views, first_viewed_time, last_viewed_time, id_post, id_account)
VALUES (6, 15, '2022-11-09', '2022-11-10', 5, 2);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (1, '2022-01-31', 1, 2);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (2, '2022-04-10', 1, 3);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (3, '2022-05-10', 2, 3);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (4, '2022-08-11', 3, 4);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (5, '2022-12-08', 4, 1);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (6, '2022-04-10', 1, 4);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (7, '2022-04-10', 2, 1);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (8, '2022-05-10', 5, 1);
INSERT INTO ohmai.followers (follower_id, time, id_account, id_account_follower)
VALUES (9, '2022-6-11', 5, 2);
INSERT INTO ohmai.comments (comment_id, comment, id_review, id_account)
VALUES (1, 'I bought it as well', 1, 2);
INSERT INTO ohmai.comments (comment_id, comment, id_review, id_account)
VALUES (2, 'same here', 1, 3);
INSERT INTO ohmai.comments (comment_id, comment, id_review, id_account)
VALUES (3, 'I also recommend it', 2, 4);
INSERT INTO ohmai.comments (comment_id, comment, id_review, id_account)
VALUES (4, 'Really! maybe I should try other brand', 3, 5);
INSERT INTO ohmai.comments (comment_id, comment, id_review, id_account)
VALUES (5, 'I tried, good item', 4, 1);SQL satatement:
SELECT COUNT(comments) AS 'Number of reviews with \'it\' '
FROM reviews
WHERE comments LIKE '%it%';Output:
3.2 Return the post title and description for the post which contains the promotion which end_date is on year 2023.
SQL satatement:
SELECT title, description, promotion_id
FROM posts
JOIN promotion ON promotion_id
WHERE posts.id_promotion = promotion.promotion_id
AND promotion.end_date < '2024-01-01';Output:
SQL satatement:
SELECT reviews.comments, posts.post_id
FROM posts
JOIN accounts
ON accounts.account_id = posts.id_account
JOIN reviews
ON reviews.review_id = posts.id_review
WHERE accounts.name = 'Cindy';Output:
