Amsterdam Airport (Schiphol) allows you to bring a full waterbottle (openend and unopenend) through security. Also you don't have to unpack your bag anymore. Just take it of your back and it will go right through the machine.

I am not sure what changed because I haven't seen this before. Even modern airports like Changi (Singapore) required me to empty my bottle. If anyone knows what changed, always interesting to read!

Source: flew from Schiphol 3 times in the last few months.