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Microsoft Access Sum Query

Posted on 2009-05-10
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Last Modified: 2012-08-13
I have a database that I have made with 4 different tables. In one table I have a blank cell of which I want to get the sum of 3 columns in the other tables.

I have no idea how the sql in access works so I'm basically stuck at the moment.

The column that is blank and needs the sum is:

Orders.Product_Build_Price


The 3 that I need to add up are as follows:

Product_PCB.PCB_Kit_Price
Product_Comp.Component_Kit_Price
Product_Pack.Packaging_Kit_Price


If you could help me do this then it would be much appreciated.
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Question by:danthorpe2002
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Korbus earned 750 total points
ID: 24350343

You will want to use at least two queries:
one lookup query to sum up the values in the source tables
one update query to change the value in the destination table.
(You can use a query as the source table, for another query.)

You may even want to break the sum query into a few seperate queries.
One query for each table to sum up all thier values
Another query to add the results of each table sum together.

I suggest you play around with the graphical query designer in access a little bit, it's fairly intuitive.  I'd suggest you start with the three querys to sum up each table (PCB,Comp and Pack).
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