ere's a "users" table and "messages" table included in the image. Implement a SQL query to return which users have more than 10 unread messages (NULL in the "date_read" column).
ere's a "users" table and "messages" table included in the image. Implement a SQL query to return which users have more than 10 unread messages (NULL in the "date_read" column).
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Related questions
Question
There's a "users" table and "messages" table included in the image.
Implement a SQL query to return which users have more than 10 unread messages (NULL in the "date_read" column).
![users
user_id
username
email
friend_count
3437315
janedoe2.0
janedoe2.0@email.com
5
3437316
princessluv8996
princessluv8996@email.com
600017
3437317
sk8ter4!f3
sk8ter4l!f3@email.com
583
Table Name: users
user_id: Id of user
username: name of user
email: email of user
friend_count: user's number of friends
messages
message_id
from_user_id
to user_id
date_sent
date_read
message
1
3437317
2138102
2015-03-15
2015-03-15
"Hi!!! Wanted to know how
00:02:17
00:03:05
u were doing?! Miss you !! ."
NULL
"Don't forget to like and
comment on my new pic."
2
1438443
5937440
2015-03-15
00:02:24
2015-03-15
00:02:25
3
2331234
1231232
2015-04-01
"Let's hang out!"
00:11:08
Table Name: messages
message_id: Id of message
from_user_id: Id of user sending the message
to_user_id: Id of user receiving the message
date_sent: date that the message was sent
date_read: date that the message was read. NULL if message has not been read.
message: text of the message](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47bcd2e2-fd09-4d16-8209-9beee0b05010%2Fd3618ba6-2235-4223-89d3-9387d1089158%2Fe5bub2r_processed.png&w=3840&q=75)
Transcribed Image Text:users
user_id
username
email
friend_count
3437315
janedoe2.0
janedoe2.0@email.com
5
3437316
princessluv8996
princessluv8996@email.com
600017
3437317
sk8ter4!f3
sk8ter4l!f3@email.com
583
Table Name: users
user_id: Id of user
username: name of user
email: email of user
friend_count: user's number of friends
messages
message_id
from_user_id
to user_id
date_sent
date_read
message
1
3437317
2138102
2015-03-15
2015-03-15
"Hi!!! Wanted to know how
00:02:17
00:03:05
u were doing?! Miss you !! ."
NULL
"Don't forget to like and
comment on my new pic."
2
1438443
5937440
2015-03-15
00:02:24
2015-03-15
00:02:25
3
2331234
1231232
2015-04-01
"Let's hang out!"
00:11:08
Table Name: messages
message_id: Id of message
from_user_id: Id of user sending the message
to_user_id: Id of user receiving the message
date_sent: date that the message was sent
date_read: date that the message was read. NULL if message has not been read.
message: text of the message
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you
![Computer Networking: A Top-Down Approach (7th Edi…](https://www.bartleby.com/isbn_cover_images/9780133594140/9780133594140_smallCoverImage.gif)
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
![Computer Organization and Design MIPS Edition, Fi…](https://www.bartleby.com/isbn_cover_images/9780124077263/9780124077263_smallCoverImage.gif)
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
![Network+ Guide to Networks (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781337569330/9781337569330_smallCoverImage.gif)
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
![Computer Networking: A Top-Down Approach (7th Edi…](https://www.bartleby.com/isbn_cover_images/9780133594140/9780133594140_smallCoverImage.gif)
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
![Computer Organization and Design MIPS Edition, Fi…](https://www.bartleby.com/isbn_cover_images/9780124077263/9780124077263_smallCoverImage.gif)
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
![Network+ Guide to Networks (MindTap Course List)](https://www.bartleby.com/isbn_cover_images/9781337569330/9781337569330_smallCoverImage.gif)
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
![Concepts of Database Management](https://www.bartleby.com/isbn_cover_images/9781337093422/9781337093422_smallCoverImage.gif)
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
![Prelude to Programming](https://www.bartleby.com/isbn_cover_images/9780133750423/9780133750423_smallCoverImage.jpg)
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
![Sc Business Data Communications and Networking, T…](https://www.bartleby.com/isbn_cover_images/9781119368830/9781119368830_smallCoverImage.gif)
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY