Thank you for this and many other helpful articles.

I ran into a hitch with the “Update” table when I had NULL values. Since NULL means Unknown rather than Empty, the records weren’t showing up in the delta table when a NULL value got populated in the data source. To fix this, I changed the WHERE clause to:

isnull(a.field1, ”) isnull(s.field1, ”)

Just thought I would share.

Thanks again,

Sami