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Editorial Team
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Asked: 2026-06-15T00:29:41+00:00

I am trying to populate a combo box with distinct values pulled from a

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I am trying to populate a combo box with distinct values pulled from a clients table, but only if those clients exist in the mfgOrders table. I have set the Row Source to the following query:

SELECT DISTINCT Client.ClientName FROM Client 
INNER JOIN mfgOrders ON Client.id=mfgOrders.client;

When I switch to Datasheet view, I can see all the distinct clients that are also in the mfgOrders table. The problem is that this does not populate in the combo box.

I originally thought that this may be due to the data size, but oddly enough when I select ClientName from Client, it will populate the box successfully but with ALL clients.

Unfortunately, I don’t want all clients in the combo box. Just the clients which also appear in the mfgOrders table.

I’m stumped on this one. Is my logic incorrect?

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1 Answer

  1. Editorial Team

    It appears that when linking a drop-down list to a query, the list will be populated based on how many fields are queried.

    In this case, despite the first field being used simply to create the union, Access created a combo box with 2 columns, the first of which had a width of 0″.

    This appears to have been done because the “show” box for the first field in the query was unchecked. The result was a blank list.

    To fix the error I simply re-arranged the query.

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