SQL Interview Preparation (Case Study) |

In this video, we solved a case study by using SQL. This type of case study will be given when we attend e-commerce-based organizations for data or business analyst interviews.
#sql #dataanalyst #businessanalyst
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Medium: / mahendraee204
Github: github.com/mah...
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Here are create and insert statements for the data used in this video:
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create table customers (
id int primary key,
last_name varchar(20),
first_name varchar(20),
age int,
country varchar(10)
);
insert into customers (id, last_name, first_name, age, country) values
(1, 'Mahendra', 'Mahi', 20, 'IND'),
(2, 'Vasir', 'Sam', 27, 'IND'),
(3, 'Rolanki', 'Maha', 25, 'USA'),
(4, 'Ogolo', 'Umesh', 19, 'USA'),
(5, 'Vangeti', 'Rakesh', 50, 'SA');
create table orders (
Order_id int,
item varchar(20),
amount int,
Customer_id int,
foreign key (customer_id) references customers(customer_id)
);
insert into orders values (1, 'Keyboard', 1200, 4), (2, 'Mouse', 1200, 4),(3, 'Monitor', 45000, 3),
(4, 'Keyboard', 1440, 1), (5, 'Mousepad', 450, 2);
create table shippings (
shipping_id int primary key,
status VARCHAR(50),
customer_id int,
foreign key (customer_id) references customers(customer_id)
);
insert into shippings values(1, 'Pending', 2),(2, 'Pending', 4), (3, 'Delivered', 3), (4, 'Pending', 5), (5, 'Delivered', 1);
create table payments (payment_id int, status varchar(20), order_id int, foreign key(order_id) references orders(order_id))
insert into payments values(120, 'Not Completed', 1), (125, 'Completed', 2),(128,'Completed', 3),
(140, 'Completed', 4), (155,'Completed', 5)