I have 2 tables in my DB. One called Manufacture and the other Product. The Manufacture table has 2 fields: • Number • Name The Product table has 3 fields: • Number • Name • Manufacture_Number What I want is When I create a new product, it shows me if the product already exists. I'm currently using this code: DLookup('[Name]', 'Product', '[Name] = ' & me.txtName.value & '') It works just fine, but once happened that a product with the same name but different manufacture. I could not create a record because of that. I only could not create a new record if the is the same product and the same manufacture as already created. How do I create one Dlookup for multiple criteria in different tables?

I suspect that you don't really want to look across different tables. You want to prevent adding a product with the same name and manufacturer as an existing product, so you want to check both fields in the Product table: DLookup('[Name]', '[Product]', '[Name] = ' & me.txtName & ' And Manufacture_Number = ' & me.txtMfrNumber) It's more likely that your input control for the manufacturer is going to be a combo box, but that works too - just replace txtMfrNumber with the name of the control that you're using to get this number. Note that you don't need to specify the.Value on the end of me.txtName as Value is the default property of your text box.

Domain functions like DLookup return a single value. You apparently want to return multiple values, one per cost centre per period. For this you will need to create a query which returns the cost centre and period columns (fields) and whatever column contains the 'missed day values'. The DLookUp function allows the Access Developer to look up the value of a field from a table other than the form's actual Record Source. It is often used as a function in a Calculated Text Box Control (see previous post for more information about Calculated Controls). So applied to our scenario.

Topaz photoshop plug ins bundle x86 x64 keygen torrent free. New Tips Added Weekly! Microsoft Access DLOOKUP Function Looking Up a Value from a Table or Query Q: I have a service call form where I track service calls for each customer. I can pick a customer from a combo box, like you covered in your.

Now, however, I'd like to know how to automatically set the address of the service call to the customer's current address - but I need to be able to change it if necessary, so I can't just show the customer's address. A: In order to do this, you're going to need a little bit of VBA programming. Now, if you've never done any VBA programming before, I strongly recommend you start by taking my tutorial. I cover all of the basics (no pun intended) of VBA programming with Access. Now, there is a special function called DLOOKUP (short for Domain Lookup) which lets you look up a value in a table or query.

For your example, you need to look up the Address, City, and State fields (and ZIP code if you have it) from your customer table where the CustomerID is the same as the CustomerID on your service form - or in this case, the value in your CustomerCombo box since you're picking from a list. Here's how the DLOOKUP function works: =DLOOKUP ( Field, Domain, Criteria) The Field is simply any field you want to return the value of: Address, City, State, ZIP, etc. The Domain is any table or query where your data resides. The Criteria allows you to tell DLOOKUP which record to return. For example, if you want to get the last name of the customer whos ID is 5, then you'd say: =DLOOKUP ( 'LastName', 'CustomerT', 'CustomerID=5') Since you're working with a service call form and the value of the CustomerID is in a combo box called CustomerCombo, you'd use the following line to get the selected customer's Address: =DLOOKUP ( 'Address', 'CustomerT', 'CustomerID=' & CustomerCombo) When you put this in the AfterUpdate event for the CustomerCombo, the Address field can be automatically populated on your form. Then, just add in DLOOKUP statements for any other fields like City or State that you might need. Here's a screen shot from one of my tutorials.

The address fields are automatically populated when the customer is changed using the combo box. Here is a FREE VIDEO TUTORIAL that will walk you through this topic in detail.