Loading sqlx database record with string manipulation

I'm working in sqlx on an existing codebase that uses structScan to load database records. As far as I can tell, structScan moves the values from database fields directly into the struct. But what I'd really like is to transform the values in the fields in some way, for example by capitalizing them. I've scoured the documentation for options for this - what's the best way to do it in Go?