SQL Server :: Compare Retrieved With "updated" Fields

Oct 4, 2010

I have a web app that allows users to update their public facing information (bio, profile pics, etc). Once a user updates a piece of information, it needs to be held "pending" until an authorized admin user "approves" the change. I was thinking that I'd keep a table (called something like PendingHistory) which would hold the "pending" changes, then once approved (which requires TWO admin user to approve), I'll dump this data into the "real" tables that's responsible for displaying information to the public. Is there a way (I'm sure there has to be) to only store those fields that were changed? Some sort of comparison of the original field vs "new" so I don't have to save everything. I was hoping to make it as easy as possible for the admin crew, so that they could just get a view of "pending changes" vs the entire row of data. So basically I need something like this:

September 15, 2010 John Doe requested to change: First Name to Fred; Last Name to Flinstone

[Date Updated] [user] [column name] [column name]

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