So I have seen similar posts trying to do what I am describing but I can't quite get it to work.
In summary:
1. I have a sql table which contains items that periodically gets added to it.
2. I have a sharepoint list which contains items that I keep sync with the sql table from 1. (That is, I copy items and remove items from the SharePoint list as they appear and disappear from the sql table)
3. I want to get rows from the sql table, get items from sharepoint list, check if an item exist, do nothing. If it doesn't exist, add to the sharepoint list
Both lists have keys that are used to make each item unique. This key key_P&LGroup
Here is an idea I am pursuing based on the summary

For some reason I can't get this to work....What I am doing wrong?