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Access - A query needed to keep inventory based on Sales

Posted on 2007-04-07
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Last Modified: 2010-03-20
I can't seem to get this done, am frustrated as heck and would appreciate help...

I have two Access tables that I'm trying to query to get a running inventory and a quick glance of how much has been made on each against the cost of the items.

Table 1 - Named: Inventory
        Fields wanted: ITEMNBR (the Item Number), COST (My Cost) CQTY (How many I have in Stock)

Table 2 - Named: Sales
        Fields wanted: ItemID (the Item Number), Quantity (the quantity sold), PriceEa (price each the customer paid),                          TotalPrice (Quantity x PriceEa)

I want this:

ITEMNBR COST CQTY InStock(Inventory.CQTY - Sales.Quantity), SalesTotal (Sales.PriceEa x Sales.Quantity)


Now, here's the kicker. the Sales.PriceEa is not always the same for each item. And I have multiple lines for items in Inventory.ITEMNBR because my cost changes with each order that I make.

So, here's an example of my Sales Table:

ItemID      PriceEa      
AC2001       2.50
AC2001  0.75
AC2001  3.60

An Example of my Inventory Table:

ITEMNBR      Cost      CQTY
AC2001      1.50      2
AC2001      2.75      2

So I need Access to count the first two sales against the first AC2001 in the table and then, because that one is now out of stock, move to the second AC2001 and count the third sale again that.

I'd like it to look like this:

ITEMNBR      Cost      InStock      SalesTotal
AC2001      1.50      0      3.25
AC2001      2.75      1      3.60

I hope that this makes sense and is possible...

Thanks in advance for your help.
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Question by:Mada123
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momi_sabag earned 500 total points
ID: 18871931
hi

in order to achive what you want, you will have to provide some column that will allow to sort the rows
there is no way you can tell which ac2001 item was sold first and which was sold second if you don't have such a column, and it will be impossible to solve your problem
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Author Comment

by:Mada123
ID: 18872286
I'm all for sorting rows and adding columns... I will change whatever is necessary to accomplish this. But I don't know what needs to be done. Can you please assist? Thanks much!
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LVL 37

Expert Comment

by:momi_sabag
ID: 18872306
i guess the easiest thing to do would be to add a timestamp column (that is date+time)
that will hold for each row the date and time of the insert statement
that way you can keep track of which items were up to sell in every point in time
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