根据是否重复输入插入/更新

I have a table with an edit/save button that pulls information from a table view. Once you hit edit, you can edit the Group_ID column. Once you hit save I want it to run an insert query that inserts the SKU and Group_ID into a table (not the view) in my database. However, if the SKU already exists in that table, I want it to run an update query instead.I have a table with an edit/save button that pu