Splunk DB Connect: How to compar stored database queries to detect when field (column) values are changed, added, or removed?

We're indexing a database table that stores saved database queries, and want to alert when the stored queries are changed. We are successfully doing so, but have experienced numerous false alarms when a change is made only to the order of columns (eg `SELECT Address,Postalcode FROM Customers` is changed to `SELECT Postalcode,Address FROM Customers`) A simple character count comparison at the Query ID level would provide an 80% solution. What I need is to detect when the field (column) values have changed, or if fields are added or removed from the saved query.