I need to replace some data with data from a backup. Here's the scenerio...

I have 2 databases. a and abak

a and abak are the same (but, ones a few hours old with the right data ;) )

a and abak have a table, posts and a field 'attach'. I'd like to take 
the data from abak.posts.attach and place it (overwriting where needed) 
into a.posts.attach where posts.attach != ''

Can someone help me? I'm not quite sure what would do it properly..

Thanks!
David



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