Advertisement

06.23.2008 at 10:04AM PDT, ID: 23508282
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

9.4

SQL JOINS in Access

Asked by DesiMck in SQL Query Syntax

Tags: ,

I have a small SQL query. This is the SQL at the moment:

"SELECT tblClass.ClassID, tblClass.Subject, tblClass.Teacher,
sum(iif (datepart('ww',tblHomework.DateSet)=(datepart('ww',Date())) ,1,0)) as wk1,
sum(iif (datepart('ww',tblHomework.DateSet)=(datepart('ww',Date())-1) ,1,0)) as wk2,
sum(iif (datepart('ww',tblHomework.DateSet)=(datepart('ww',Date())-2) ,1,0)) as wk3,
sum(iif (datepart('ww',tblHomework.DateSet)=(datepart('ww',Date())-3) ,1,0)) as wk4
FROM tblClass LEFT JOIN tblHomework ON tblClass.ClassID = tblHomework.ClassID
WHERE (tblHomework.TaskType = 'HW' AND Subject='" & Request("Faculty") & "')
GROUP BY tblClass.ClassID, tblClass.Subject, tblClass.Teacher"

It works just fine except for one thing. tblClass contains all the classes in the school. I want all the classes to show even if they are not found in tblHomework. Basically the SQL should count the number of homeworks set for each class. If the class does not appear in tblHomework that would imply no homework has been set.

I have fiddled about with RIGHT JOIN and LEFT join but the output is the same. It only shows the classes that can be matched in both tables. I am using Access so FULL OUTER JOIN is not acceptable.

Any ideas how to solve this one?

Thanks,

Desi Start Free Trial
[+][-]06.23.2008 at 10:23AM PDT, ID: 21848289

View this solution now by starting your 7-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zone: SQL Query Syntax
Tags: SQL, Access
Sign Up Now!
Solution Provided By: DanielWilson
Participating Experts: 2
Solution Grade: A
 
 
[+][-]06.23.2008 at 10:23AM PDT, ID: 21848290

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
 
Loading Advertisement...
20080716-EE-VQP-32 / EE_QW_2_20070628