Solved

Neeq a SQL query

Posted on 2011-03-10
9
260 Views
Last Modified: 2012-06-27
Experts,
As per my attachment, could you please get me a query?
Thanks in advance.
test.docx
0
Comment
Question by:Tpaul_10
  • 3
  • 2
  • 2
  • +2
9 Comments
 
LVL 9

Expert Comment

by:sshah254
ID: 35100479
What decides if 1233 or 1234 from Table1 should be selected?

Ss
0
 
LVL 32

Assisted Solution

by:ewangoya
ewangoya earned 50 total points
ID: 35100520

select A.Column1, b.Column1, MAX(A.Column3) [Column3]
from Table1 A
inner join Table2 B on B.Column1 = A.Column2
group by A.Column1, b.Column1
0
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 35100522
I presume you need to review the specs ... because I don't see an explanation why table2 is actually needed, and I see no explanation on why row2 from table1 is returned and why not row1.

meanwhile, you might want to read this article, I presume it will help you:
http://www.experts-exchange.com/A_3203.html
0
Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

 
LVL 32

Expert Comment

by:ewangoya
ID: 35100557
My mistake


select MAX(A.Column1) [Table1 Column1], B.Column1 [table2 Column1], MAX(A.Column3) [Column3]
from Table1 A
inner join Table2 B on B.Column1 = A.Column2
group by B.Column1
0
 

Author Comment

by:Tpaul_10
ID: 35100585
Basically I need the max value from table1 and for some rows, it is returning the both the rows even though I have used max(column1) in my query. Not sure why
Thanks
0
 
LVL 9

Expert Comment

by:sshah254
ID: 35100600
ewangoya,

We don't know why he is selecting one row over the other - maybe it should be max, maybe min, maybe first, maybe last ... :-)

Ss
0
 
LVL 32

Expert Comment

by:ewangoya
ID: 35100654

A quick look at the results tells me its max values
0
 
LVL 40

Accepted Solution

by:
Sharath earned 200 total points
ID: 35101245
try this.
SELECT t1.Column1, 
       t2.Column1, 
       t1.Column3 
  FROM table1 t1 
       JOIN (  SELECT Column2, 
                      MAX(Column1) Column1 
                 FROM table1 
             GROUP BY Column2) AS t11 
         ON t1.Column1 = t11.Column1 
            AND t1.Column2 = t11.Column2 
       JOIN table2 t2 
         ON t1.Column2 = t2.Column2

Open in new window

0
 

Author Closing Comment

by:Tpaul_10
ID: 35110909
Thanks for all your help guys and just to let you know I don't have to review my specs since it was pretty straight forward and I didn't specify all the columns in my tables and I wanted the maximum value.

Sharath's solution gave me the correct results. once again THANKS to all for quick response.
0

Featured Post

Use Case: Protecting a Hybrid Cloud Infrastructure

Microsoft Azure is rapidly becoming the norm in dynamic IT environments. This document describes the challenges that organizations face when protecting data in a hybrid cloud IT environment and presents a use case to demonstrate how Acronis Backup protects all data.

Question has a verified solution.

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

Creating and Managing Databases with phpMyAdmin in cPanel.
Introduction This article is intended for those who are new to PHP error handling (https://www.experts-exchange.com/articles/11769/And-by-the-way-I-am-New-to-PHP.html).  It addresses one of the most common problems that plague beginning PHP develop…
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.
Viewers will learn how to use the SELECT statement in SQL and will be exposed to the many uses the SELECT statement has.

830 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