Solved

Sql max column

Posted on 2009-05-14
5
391 Views
Last Modified: 2012-05-07
Hi

I am selecting records mulitple tables as follows

select distinct o.order_id, o.order_date, u.name, a.addressid
from orders o
inner join users u on o.user_id=u.user_id
inner join addresses a on u.user_id=a.user_id
where o.order_status='c'

I also want to add a column to the above which contains the max order_id from the above selected records.  

How can I acheive this?

Wing
0
Comment
Question by:WingYip
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 92

Accepted Solution

by:
Patrick Matthews earned 50 total points
ID: 24384489
select MAX(o.order_id) AS order_id, o.order_date, u.name, a.addressid
from orders o
inner join users u on o.user_id=u.user_id
inner join addresses a on u.user_id=a.user_id
where o.order_status='c'
GROUP BY o.order_date, u.name, a.addressid
0
 
LVL 1

Author Comment

by:WingYip
ID: 24384506
I am an idiot!
0
 
LVL 1

Author Closing Comment

by:WingYip
ID: 31581434
thanks
0
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 24384524
WingYip said:
>>I am an idiot!

No, you just need more coffee :)
0
 
LVL 1

Author Comment

by:WingYip
ID: 24384974
actually that doesnt work as it returns the highest order number within the grouping.

If there are a total of 300 records selected using the query above then I want to return the highest order_id out of those 300 records so that each row will show the same value for the MaxOrderId column (as below)

order_id    MaxOrderId
1                 4
2                 4
3                 4
4                 4
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

For both online and offline retail, the cross-channel business is the most recent pattern in the B2C trade space.
This article shows gives you an overview on SQL Server 2016 row level security. You will also get to know the usages of row-level-security and how it works
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.
Viewers will learn how to use the UPDATE and DELETE statements to change or remove existing data from their tables. Make a table: Update a specific column given a specific row using the UPDATE statement: Remove a set of values using the DELETE s…

730 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