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...
icon
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
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
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 4 images

Blurred answer
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi…
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…
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)
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
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
Prelude to Programming
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
Sc Business Data Communications and Networking, T…
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY