SQL Development
 
Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
 
 
User Name:
Password:
Remember me
Go Back   ASP Free Forums > Database > SQL Development
Reload this Page

SQL Query question

Discuss SQL Query question in the SQL Development forum on ASP Free.
SQL Query question SQL forums discussing structured query language related questions that are platform independent. Discussions include advanced topics such as joins, stored procedures, and triggers.

Reply
Add This Thread To:
  Del.icio.us   Digg   Google   Spurl   Blink   Furl   Simpy   Y! MyWeb 
« Previous Thread | Next Thread »  
Thread Tools Search this Thread Rate Thread Display Modes
 
Unread ASP Free Forums Sponsor:
  #1  
Old February 24th, 2005, 06:12 PM
avkb03 avkb03 is offline
Contributing User
ASP Free Newbie (0 - 499 posts)
  
Join Date: Feb 2005
Posts: 110 avkb03 User rank is Private First Class (20 - 50 Reputation Level)avkb03 User rank is Private First Class (20 - 50 Reputation Level) 
Time spent in forums: 1 Day 10 h 41 m 54 sec
Reputation Power: 4
SQL Query question
SQL Query Question

Given the following data:

table1
----------
|stuName | stuFavoriteFruit |

I need to construct a query to answer two questions, while not knowing the data in the tables.

1. Who likes all the fruits?
2. List all the people that like fruits that Aaron likes.

For 1. I think I have to SELECT DISTINCT the stuFavoriteFruit field, but I'm not sure how I can get a count back on that and compare it to the student names to findout who likes all teh fruits.

Any help would be much appreciated!
Reply With Quote
  #2  
Old February 24th, 2005, 06:31 PM
Memnoch's Avatar
Memnoch Memnoch is offline
Unholy Moderator
Click here for more information.
  
Join Date: Oct 2003
Location: In hell, where did you think?
Posts: 11,879 Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level) 
Time spent in forums: 3 Weeks 5 Days 18 h
Reputation Power: 500
Quote:
Originally Posted by avkb03

1. Who likes all the fruits?

How do you know how many fruits there are?

Quote:
Originally Posted by avkb03
2. List all the people that like fruits that Aaron likes.

How do you know if Aaron is even in the database, if you can't see the data???


Without sample data, no one is going to be able to help you.
Reply With Quote
  #3  
Old February 24th, 2005, 06:35 PM
Memnoch's Avatar
Memnoch Memnoch is offline
Unholy Moderator
Click here for more information.
  
Join Date: Oct 2003
Location: In hell, where did you think?
Posts: 11,879 Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)Memnoch User rank is Lieutenant Colonel (40000 - 50000 Reputation Level) 
Time spent in forums: 3 Weeks 5 Days 18 h
Reputation Power: 500
Here's a shot

Get all fruits
Code:
SELECT DISTINCT stuFavoriteFruit
FROM TableName


Get names of everyone who selected all the fruits
Code:
SELECT DISTINCT stuName
FROM TableName
WHERE stuFavoriteFruit IN
(
   SELECT DISTINCT stuFavoriteFruit
   FROM TableName
)

Get all fruits Aaron likes
Code:
SELECT DISTINCT stuFavoriteFruit
FROM TableName
WHERE stuName = 'Aaron'

Get others who like the same fruits Aaron likes
Code:
SELECT DISTINCT stuName
FROM TableName
WHERE stuFavoriteFruit IN
(
   SELECT DISTINCT stuFavoriteFruit
   FROM TableName
   WHERE stuName = 'Aaron'
)
Reply With Quote
  #4  
Old February 24th, 2005, 07:55 PM
avkb03 avkb03 is offline
Contributing User
ASP Free Newbie (0 - 499 posts)
  
Join Date: Feb 2005
Posts: 110 avkb03 User rank is Private First Class (20 - 50 Reputation Level)avkb03 User rank is Private First Class (20 - 50 Reputation Level) 
Time spent in forums: 1 Day 10 h 41 m 54 sec
Reputation Power: 4
Memnoch, Thanks for the help!


Q1 I don't think is working correctly.
Q2 looks good, but not sure if it is what is needed

I willwork with both of them and post any questions.

Thanks again!

Attached is the data I'm working with.
Attached Files
File Type: zip Final exam.zip (9.5 KB, 218 views)
Reply With Quote
  #5  
Old February 24th, 2005, 08:02 PM
avkb03 avkb03 is offline
Contributing User
ASP Free Newbie (0 - 499 posts)
  
Join Date: Feb 2005
Posts: 110 avkb03 User rank is Private First Class (20 - 50 Reputation Level)avkb03 User rank is Private First Class (20 - 50 Reputation Level) 
Time spent in forums: 1 Day 10 h 41 m 54 sec
Reputation Power: 4
Yea query 2 needs to be people that like all 3 fruits that Aaron likes, so Denny and Gina.
Reply With Quote
Reply

Viewing: ASP Free Forums > Database > SQL Development > SQL Query question

« Previous Thread | Next Thread »

Thread Tools  Search this Thread 
Search this Thread:

Advanced Search
Display Modes  Rate This Thread 
Linear Mode Linear Mode
Rate This Thread:


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox
Forum Jump



 Free IT White Papers!
 
How to Present Effectively Online
This white paper offers practical and actionable advice on the key steps that any presenter should consider as they plan and execute a Webinar or online meeting.
 
Open Source Security Myths
Open Source Software (OSS) is computer software whose source code is available to the general public with relaxed or non-existent intellectual property restrictions (or arrangement such as the public domain), and is usually developed with the input of many contributors.
 
Power and Cooling Capacity Management for Data Centers
This paper describes the principles for achieving power and cooling capacity management.
 
Scalable, Fault-Tolerant NAS for Oracle - The Next Generation
For several years NAS has been evolving as a storage alternative for Oracle databases, and for good reason: NAS is quite often the simplest, most cost-effective storage approach for Oracle. Learn about the benefits that HP's approach to scalable NAS brings to Oracle environments in this comprehensive white paper.
 
Understanding Web Application Security Challenges
This white paper discusses many common threats and preventive measures for Web application security, and explains what you can do to help protect your organization.
 

Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
  
 





© 2003-2009 by Developer Shed. All rights reserved. DS Cluster 3 hosted by Hostway. 
Stay green...Green IT