SQL query to update a table if user is blank

NMend

New Member
Joined
Aug 9, 2010
Messages
5
Hi Experts,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
<o:p></o:p>
I am using ADO and DAO to retrieve and send data from excel to access.<o:p></o:p>
I want to write a query where I want to update a field(User) in access table, if a user name is not updated before else it should pop a msg that this is already being used pls choose another and move to next available.

Can anyone help me in writing above query.

Thanks in advance for help. NMend
 

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