I'm looking to only insert unique values within a record on update with a trigger. Right now I have two tables set up with a trigger on insert/update. When a user updates a field within the Employee's table, it copies all of the information from the current record into the Employee History table. However, my users want to be able to see what fields were modified within the Employee History table. The trigger currently just copies all fields (and values in those fields - most are text) from the current Employee's table to the Employee History table. The user then can compare the current r