Solved

SUM in one-to-many relationship

Posted on 2008-09-29
1
181 Views
Last Modified: 2011-09-20
Say I have two tables:

tblCustomer and tblPurchases
a single customer can purchase many items from the store.
If I do a regular query, the customer's name is repeated for each purchase made.

Instead I would like a TOTAL of all their purchases (Quantity) for each customer.

So a list of all the customers, and the total amount each customer has purchased.
0
Comment
Question by:NO_CARRIER
[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
1 Comment
 
LVL 43

Accepted Solution

by:
TimCottee earned 75 total points
ID: 22595916
Hello NO_CARRIER,

Select tblCustomer.NameColumn, Sum(tblPurchases.ValueCOlumn) From tblCustomer Inner Join tblPurchases On tblCustomer.KeyColumn = tblPurchases.KeyColumn

You will need to specify the correct column names of course.

Regards,

TimCottee
0

Featured Post

Independent Software Vendors: 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

'Between' is such a common word we rarely think about it but in SQL it has a very specific definition we should be aware of. While most database vendors will have their own unique phrases to describe it (see references at end) the concept in common …
This article describes how to use the timestamp of existing data in a database to allow Tableau to calculate the prior work day instead of relying on case statements or if statements to calculate the days of the week.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

733 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