Question

1. Using a function, display the customer who has the highest credit limit. Display the customer

number, customer name, and credit limit. Insert your snip of the query and resultset together

here:

2. How many customers have the same credit limit? Display the count of customers by credit

limit. Display the count as ‘Number of Customers’ and credit limit as ‘Credit Limit’. Insert your

snip of the query and resultset together here:

3. What is the average quoted price, maximum quoted price, and minimum quoted price of all

orders? Display the average as ‘Average Quoted Price’, maximum quoted price as ‘Maximum

Quoted Price’, and minimum quoted price as ‘Minimum Quoted Price’. Extra decimal places are

okay for now. Insert your snip of the query and resultset together here:

Premier Product database:

#--Project: Premier Products DB script file using create and insert

#-----CREATE AND OPEN THE DATABASE

#-- Creating Databases

CREATE DATABASE premier_products;

#-- Creating Tables

USE premier_products;

#-- Rep Table

CREATE TABLE rep

(

rep_num char(2) primary key,

last_name varchar(15),

first_name varchar(15),

street varchar(15),

city varchar(15),

state char(2),

zip char(5),

commission decimal(7,2),

rate decimal(3,2)

);

#-- Customer table

CREATE TABLE customer

(

customer_num char(3) primary key,

customer_name varchar(30),

street varchar(15),

city varchar(15),

state char(15),

zip char(5),

balance decimal(7,2),

credit_limit decimal(7,2),

rep_num char(2)

);

#-- Orders table

CREATE TABLE orders

(

order_num char(5) primary key,

order_date timestamp,

customer_num char(3)

);

#-- Order_line table

CREATE TABLE order_line

(

order_num char(5),

part_num char(4),

num_ordered int(5),

quoted_price decimal(7,2),

PRIMARY KEY (order_num, part_num)

);

#-- Part table

CREATE TABLE part

(

part_num char(4) primary key,

description varchar(20),

on_hand int(4),

class char(2),

warehouse char(2),

price decimal (7,2)
);

#-- Populate rep table

INSERT INTO rep values ('20', 'Kaiser', 'Valerie', '624 Randall', 'Grove', 'FL', '33321', 20542.50, 0.05);

INSERT INTO rep values ('35', 'Hull', 'Richard', '532 Jackson', 'Sheldon', 'FL', '33553', 39216.00, 0.07);

INSERT INTO rep values ('65', 'Perez', 'Juan', '1626 Taylor', 'Fillmore', 'FL', '33336', 23487.00, 0.05);

#-- Populate customer table

INSERT INTO customer values ('148', 'Al''s Appliance and Sport', '2837 Greenway', 'Fillmore', 'FL', '33336',
6550.00, 7500.00, '20');

INSERT INTO customer values ('282', 'Brookings Direct', '3827 Devon', 'Grove', 'FL', '33321', 431.50, 10000.00, '35');

INSERT INTO customer values ('356', 'Ferguson''s', '382 Wildwood', 'Northfield', 'FL', '33146', 5785.00, 7500.00,
'65');

INSERT INTO customer values ('408', 'The Everything Shop', '1828 Raven', 'Crystal', 'FL', '33503', 5285.25, 5000.00, '35');

INSERT INTO customer values ('462', 'Bargains Galore', '3829 Central', 'Grove', 'FL', '33321', 3412.00, 10000.00, '65');

INSERT INTO customer values ('524', 'Kline''s', '838 Ridgeland', 'Fillmore', 'FL', '33336', 12762.00, 15000.00, '20');

INSERT INTO customer values ('608', 'Johnson''s Department Store', '372 Oxford', 'Sheldon', 'FL', '33553', 2106.00, 10000.00, '65');

INSERT INTO customer values ('687', 'Lee''s Sport and Appliance', '282 Evergreen', 'Altonville', 'FL', '32543', 2851.00, 5000.00, '35');

INSERT INTO customer values ('725', 'Deerfield''s Four Seasons', '282 Columbia', 'Sheldon', 'FL', '33553', 248.00, 7500.00, '35');

INSERT INTO customer values ('842', 'All Season', '28 Lakeview', 'Grove', 'FL', '33321', 8221.00, 7500.00, '20');

#-- Populate orders table

INSERT INTO orders value ('21608', '2015-10-20', '148');

INSERT INTO orders value ('21610', '2015-10-20', '356');
INSERT INTO orders value ('21613', '2015-10-21', '408');

INSERT INTO orders value ('21614', '2015-10-21', '282');

INSERT INTO orders value ('21617', '2015-10-23', '608');
INSERT INTO orders value ('21619', '2015-10-23', '148');

INSERT INTO orders value ('21623', '2015-10-23', '608');

#-- Populate order_line table

INSERT INTO order_line value ('21608', 'AT94', 11, 21.95);

INSERT INTO order_line value ('21610', 'DR93', 1, 495.00);

INSERT INTO order_line value ('21610', 'DW11', 1, 399.99);

INSERT INTO order_line value ('21613', 'KL62', 4, 329.95);

INSERT INTO order_line value ('21614', 'KT03', 2, 595.00);

INSERT INTO order_line value ('21617', 'BV06', 2, 794.95);

INSERT INTO order_line value ('21617', 'CD52', 4, 150.00);

INSERT INTO order_line value ('21619', 'DR93', 1, 495.00);

INSERT INTO order_line value ('21623', 'KV29', 2, 1290.00);

#--Populate part table

INSERT INTO part value ('AT94', 'Iron', 50, 'HW', '3', 24.95);

INSERT INTO part value ('BV06', 'Home Gym', 45, 'SG', '2', 794.95);

INSERT INTO part value ('CD52', 'Microwave Oven', 32, 'AP', '1', 165.00);

INSERT INTO part value ('DL71', 'Cordless Drill', 21, 'HW', '3', 129.95);

INSERT INTO part value ('DR93', 'Gas Range', 8, 'AP', '2', 495.00);

INSERT INTO part value ('DW11', 'Washer', 12, 'AP', '3', 399.99);

INSERT INTO part value ('FD21', 'Stand Mixer', 22, 'HW', '3', 159.95);

INSERT INTO part value ('KL62', 'Dryer', 12, 'AP', '1', 349.95);

INSERT INTO part value ('KT03', 'Dishwasher', 8, 'AP', '3', 595.00);

INSERT INTO part value ('KV29', 'Treadmill', 9, 'SG', '2', 1390.00);

Answer 1

NOTE: Small correction in table creation, We should not declare integer type attributes as int(4) - it should just be int

1.

select customer_num , customer_name , credit_limit
from customer
where credit_limit = (select max(credit_limit) from customer);

ResultSet:

2.

select count(customer_num) as "Number of Customers" , credit_limit as "Credit Limit"
from customer
group by credit_limit;

3.

select avg(quoted_price) as "Average Quoted Price " , min(quoted_price) as "Minimum Quoted Price ", max(quoted_price) as "Maximum Quoted Price" from order_line;

ResultSet: