Solved

SELECT DISTINCT on one column only

Posted on 2015-01-08
4
98 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 500 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

Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

Question has a verified solution.

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

Things That Drive Us Nuts Have you noticed the use of the reCaptcha feature at EE and other web sites?  It wants you to read and retype something that looks like this.Insanity!  It's not EE's fault - that's just the way reCaptcha works.  But it is …
Introduction Since I wrote the original article about Handling Date and Time in PHP and MySQL (http://www.experts-exchange.com/articles/201/Handling-Date-and-Time-in-PHP-and-MySQL.html) several years ago, it seemed like now was a good time to updat…
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.

809 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