[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

SELECT DISTINCT on one column only

Posted on 2015-01-08
4
Medium Priority
?
123 Views
Last Modified: 2015-01-08
How do I select distinct only on one column.

Below is my current code...

$query_rs_media_new_group = "SELECT DISTINCT title, group_id, description, brand, weight, category, id FROM media_new";

Open in new window


My issue is that I need to select all the columns you see in my code. However I only want the "title" column to be DISTINCT.

What do I need to do?
0
Comment
Question by:petewinter
  • 2
  • 2
4 Comments
 
LVL 32

Expert Comment

by:Daniel Wilson
ID: 40538617
Would you provide some sample data and desired results?

Thanks!
0
 

Author Comment

by:petewinter
ID: 40538709
See sample data attached.

media-new.csv

You will notice in the data some of the "title" rows are the same. I only want to show the first unique "title".  So I should only see 8 of the 30 rows of data in the sample data.
0
 
LVL 32

Accepted Solution

by:
Daniel Wilson earned 2000 total points
ID: 40538772
You want each title but only one of each of the other fields.  OK, so we'll pick ... one of them.  We can pick the smallest or the largest.  If you want to switch to the largest, change the "MIN" to "MAX".
$query_rs_media_new_group = "SELECT title, MIN(group_id) as group_id, min(description) as description, min(brand) as brand, min(weight) as weight, min(category) as category, min(id) as id 
FROM media_new group by title";

Open in new window

0
 

Author Closing Comment

by:petewinter
ID: 40538840
Many thanks
0

Featured Post

Upgrade your Question Security!

Your question, your audience. Choose who sees your identity—and your question—with question security.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This post looks at MongoDB and MySQL, and covers high-level MongoDB strengths, weaknesses, features, and uses from the perspective of an SQL user.
It’s a season to be thankful, and we’re thankful for users like you who engage on site, solve technology problems, and network with others in the industry. What tech are we most thankful for? Keep reading.
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to dynamically set the form action using jQuery.
Suggested Courses

591 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question