I tried this initially and put all 30K questions in Anki. I learnt about 97% of them, but it still wasn't good enough to win
This kind of unlinked data leaks very fast, too: at my peak I had to top up with Anki for about 3 hours a day. I've forgotten almost all of it now.
A small consolation is that I can still tell you the 'exact number of gallons of water' in most major lakes.
I don't think there is such a thing.
I used to be pretty good at the WWTBAM pub machine. I am a pretty quick reader so could scan read and answer the question pretty much instantly if I knew it, managed to impress a few onlookers that way (slow readers no doubt) as it seemed almost supernatural to them. My one taste of what it would feel like to be a top sports person!
Another time the answer to a question was "West Ham" (the soi-disant football team), and I said to my pals "write down West Ham United, as this guy doesn't know anything about football and will surely insist upon it" ... and so it proved, despite howls of protest from other quizzers.
We do a different pub quiz now :)