How to Check for Duplicates Before Inserting Into SQL. When you insert new records into an SQL database, you may run into issues where you accidentally overwrite records that are already present ...

As you can see in Figure E, the Find Duplicates column returns the value 2 if the record has a duplicate. The Find Duplicates 2 column returns the term Table, which we’ll take care of later.

How to correct duplicate row data in Entity Framework and LINQ for .NET 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 ...