Can I use DBNull.Value in SQLiteCommand

Question

Lets imagine next situation, I am using ADO.NET Data Provider for SQLite, and want to select a user from SQLite db by his name and email (email is NULL).

using (var cmd = new SQLiteCommand(conn))
{
   cmd.CommandText = "SELECT UserId FROM User WHERE Name=@Name and Email=@Email";
   cmd.Parameters.AddWithValue("Name", userName);
   cmd.Parameters.AddWithValue("Email", ((object)userEmail) ?? DBNull.Value);
   var user = (int?)cmd.ExecuteScalar() ?? 0;
}

As the result I can't get existing user. The question is: Can I use DBNull.Value with SQLiteCommand?

Answer 1

You would end up with = NULL which is not valid as nothing is equal to null.

How about ... WHERE Name=@Name and (Email=@Email or @Email IS NULL)