Solved

search authors sql help?

Posted on 2012-03-25
4
298 Views
Last Modified: 2012-03-25
Hi,

I need help with the sql.

I have a tblAuthor(authorid, surname,givenname)
tblAssociation(associationid,publicationid,authorid)
tblPublication(publicationid,title)


I am trying to find all other authors(coauthors) who worked on the same publcation with given an authorid.

ex) coauthors of author1 are 2,3,4,5
      coauthors of author2 are 1,5,7
     coauthors of author3 are 1,4
     coauthors of author4 are 1,3  etc
     
      publication1, author1,author3,author4  
      publciation2, author1,author2,author5
      publication3, author2,author1,author7
      publication4,author6,author7


 tblassociation(1,1,1)
 tblassociation(2,1,3)
 tblassociation(3,1,4)
 tblassociation(4,2,1)
 tblassociation(5,2,2)
 tblassociation(6,2,5)
 tblassociation(7,3,2)
 tblassociation(8,3,1)
 tblassociation(9,3,7)
 tblassociation(10,4,6)
 tblassociation(11,4,7)
0
Comment
Question by:dkim18
  • 3
4 Comments
 
LVL 61

Expert Comment

by:mbizup
ID: 37762609
Select AuthorId
From tblassociation
where pubid in
(Select pubid from tblassociation
Where authorid= [enter author id]
0
 
LVL 61

Expert Comment

by:mbizup
ID: 37762619
I missed a closing parenthesis in that:



Select AuthorId
From tblassociation
where pubid in
(Select pubid from tblassociation
Where authorid= [enter author id])
0
 
LVL 61

Accepted Solution

by:
mbizup earned 500 total points
ID: 37762624
An alternative which might have better performance:


SELECT AuthorId
FROM tblassociation
INNER JOIN
(SELECT pubid FROM tblassociation
WHERE authorid= [enter author id]) AS a
ON tblassociation.PubID = a.PubID
0
 

Author Comment

by:dkim18
ID: 37762632
I think that's what I got.

SELECT Affiliation.AuthorID, Author.Surname, Author.Given_Name
FROM Author INNER JOIN Affiliation ON Author.AuthorID = Affiliation.AuthorID
WHERE (((Affiliation.PublicationID) In (SELECT Affiliation.PublicationID FROM Affiliation WHERE Affiliation.AuthorID=[xxxx])));

Thanks for checking it out.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

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

Suggested Solutions

JSON is being used more and more, besides XML, and you surely wanted to parse the data out into SQL instead of doing it in some Javascript. The below function in SQL Server can do the job for you, returning a quick table with the parsed data.
As tax season makes its return, so does the increase in cyber crime and tax refund phishing that comes with it
What’s inside an Access Desktop Database. Will look at the basic interface, Navigation Pane (Database Container), Tables, Queries, Forms, Report, Macro’s, and VBA code.
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…

773 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