I am trying to use model builder to export iterate through a GDB, and export all layers to a single layer. Within my GDB, there are some attributes that are the same across the entire database, I would like to keep only those attributes and drop everything else. I am not sure if this is possible in ModelBuilder or if I have to switch to a python script.
Hard to really give an answer without seeing the actual data and how many feature classes your talking about.
What I would suggest is creating a new Feature Class that contains all the possible Attributes using the existing field names exactly as they are in the database. you can simply select all and do a copy paste and it will paste them into the new Feature Class. Then you can go through and perform clean up.
