Creating a Lookup with Microsoft Access Tables
1. Create a new table and save it as tblProducts. Create the following fields in this table:
Field Name Data Type
ProductID AutoNumber
ProductName Text
ProductPrice Currency
Set ProductID as the primary key
2. Enter the following data into the tblProducts Table
Product ID Product Name ProductPrice
1 A £5.99
2 B £10.59
3 C £21.99
4 D £35.49
5 E £19.99
That’s you first table done, you can now close it.
The second table will contain information about discounts. The discount amount is dependant on the price of the product. For example if the product cost under £10 you only get a £2 discount. If it’s between £10 and £19.99 you get a whopping £5 discount – too good to be true you might say! There are other discount available too.
Create a new table and save it as tblDiscounts. Create the following fields in this table:
Field Name Data Type
DiscountID AutoNumber
StartPrice Currency
EndPrice Currency
Discount Currency
Set DiscountID as the primary key
Enter the following data into the tblDiscounts table:
QuantityID StartPrice EndPrice Discount
1 £0.00 £9.99 £2
2 £10.00 £19.99 £5
3 £20.00 £29.99 £8
4 £30.00 £39.99 £10
5 £40.00 £49.99 £12
Now close the table
3. Nearly there now, all we have to do is create a query that includes both tables. Create a new query in design view adding both the tblProducts table and the tblDiscounts table to the query.
Now add the following fields to the query grid:
From the tblProducts table add: ProductName & ProductPrice
From the tblDiscounts table add: Discount
In the criteria row for the ProductPrice field type the following:
Between [tblDiscounts].[StartPrice] And [tblDiscounts].[EndPrice]
Save the query as qryDiscountLookup. Now run the query to see the appropriate discount displayed for each product.
You could calculate the new sale price if you liked. To do this switch back to design view in your query and in the next available field in your query grid write the following in the Field: row.
SalePrice: [ProductPrice]-[Discount]
Before you run the query you had better format your new calculated field to show the result in currency format. To do this click into the field on the query grid then click View | Properties. In the Field properties window find the Format properties and choose Currency . Save and run query again. You should have the discounted price for each product displayed in your new SalePrice field.