Effectively maintaining an Access database requires the regular removal of duplicate records. The Find Duplicates Query wizard handles this chore quickly and easily. When maintaining an Access ...

When you insert new records into an SQL database, you may run into issues where you accidentally overwrite records that are already present due to a duplication issue. You can use a simple alteration ...

Do you want to find out how to avoid duplicates in the results of a SQL SELECT query? This article will show you how. Simply use the DISTINCT clause and between the SELECT clause and the fields.

If you query your Access database to generate a mailing list, but the list contains duplicate names and addresses, this helpful trick will save you some time. See how tweaking the query properties can ...

Twice in the past couple of months I’ve gotten tripped up by the same data issue when using LINQ to Entities in the .NET framework. I create a simple view in my database which performs some ...

If you've just started writing SQL Server queries, there's a good chance you probably wrote a query, saw it return the right ...