Solved

Join on the same table different column

Posted on 2012-03-25
4
611 Views
Last Modified: 2012-03-25
Is it possible to JOIN on the same table, but different column in the same query?

SELECT Table1.Name, Table2.FirstName
FROM Table1
INNER JOIN Table2
ON Table1.Table1ID = Table2.FirstID
INNER JOIN Table2
ON Table1.Table1ID = Table2.SecondID

I know the above scenario doesn't work, so how could I JOIN on the same table different column?
0
Comment
Question by:mitdaniels
  • 2
  • 2
4 Comments
 
LVL 75

Expert Comment

by:Aneesh Retnakaran
ID: 37764133
use a LEFT JOIN

SELECT Table1.Name, Table2.FirstName
FROM Table1
INNER JOIN Table2
ON Table1.Table1ID = Table2.FirstID
LEFT JOIN Table2
ON Table1.Table1ID = Table2.SecondID
0
 

Author Comment

by:mitdaniels
ID: 37764219
Thanks aneeshattingal.

I gave it a go, but get this error message:

"Msg 1013, Level 16, State 1, Line 1
The objects "Table2" and "Table2" in the FROM clause have the same exposed names. Use correlation names to distinguish them."
0
 
LVL 75

Accepted Solution

by:
Aneesh Retnakaran earned 250 total points
ID: 37764272
SELECT Table1.Name, Table2.FirstName
FROM Table1
INNER JOIN Table2  
ON Table1.Table1ID = Table2.FirstID
LEFT JOIN Table2 t
ON Table1.Table1ID = t.SecondID
0
 

Author Closing Comment

by:mitdaniels
ID: 37764287
The concept works thanks!!
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

The Delta outage: 650 cancelled flights, more than 1200 delayed flights, thousands of frustrated customers, tens of millions of dollars in damages – plus untold reputational damage to one of the world’s most trusted airlines. All due to a catastroph…
Shadow IT is coming out of the shadows as more businesses are choosing cloud-based applications. It is now a multi-cloud world for most organizations. Simultaneously, most businesses have yet to consolidate with one cloud provider or define an offic…
Using examples as well as descriptions, and references to Books Online, show the documentation available for date manipulation functions and by using a select few of these functions, show how date based data can be manipulated with these functions.
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.

756 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