By default, the asset store element comes with a 32-bit and 64-bit DLL for interacting with SQLite, but out of the box, it's configured for a 32-bit editor and 32-bit runtime environment.  To create and run 64-bit Windows apps is very straight forward:

  1. Go into "File ::: Build Settings ..."
  2. Under the platform "PC, Mac and Linux", click the "Player Settings..." at the bottom of the screen
  3. In the Inspector for "Settings for PC, Mac & Linux Standalone", change the "Scripting Define Symbols":
  • For 32-bit, remove "SQLINQ64" and replace it with "SQLINQ32"
  • For 64-bit, remove "SQLINQ32" and replace it with "SQLINQ64"

You will now be able to execute the code.