I wasn't sure if it was the same in OpenELEC and LibreELEC...
LibreELEC is a fork of OpenELEC and it's almost the same yet.
Also what is "sqlite" ? Sorry if this is all obvious for you guys, but I'm newbie in this kind of stuff.Is this solutiion still needed with the version of KODI we're using, I don't want to mess it up for nothing?
SQlite is a file based SQL database management system. Don't worry, nobody knows everything. I wouldn't update the pathes by a SQLite client.
I would either try to update the pathes in Kodi or to add new pathes by using "Root filesystem" in Kodi. So you only have to create the mountpoint and to persist it by putting it into the autostart.sh. Forget SQLite.