retrieve binary from database and convert back to original file


I saw this post:

And wanted to find out how to convert a binary back to the normal file type before it was converted to binary. In the post it mentions these steps:

  • retrieve bytes (as hex) from database if / when necessary...
  • serialize to a file for presentation if / when necessary

How do I serialize back to a file, in this case a pptx file that was stored in a sql db that a shiny app will interface with. Appreciate your time and guidance. Thanks.

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