I have a document library and my users want to be able to upload/associate another document to an already uploaded one in the library. I was thinking another column but there isn't a field for a file upload. Any ideas?
You can use column type "
Multiple line of Text" with option "
Enhanced Rich Text". In this column type you get the functionality to upload file.
This works in SharePoint 2010 and 2013. I am not sure about SharePoint 2007.
Other option will be to add Hyperlink with formatting and constraints for publishing site column and add it to your list. This field allow to browse and upload a file to document library.
For this you will need to activate Publishing feature of a site. And then go to site columns and create a new column of type
Hyperlink with formatting and constraints for publishing Then add this newly created site column in your document library.
For more help refer this link: