Probably the same way SF deals with it: by not dealing with it because it's not an issue. I lived in an apartment building on the same block as at least one club and multiple bars, all open till at least 2am and it was never a problem. Some of the sound will leak into the street, especially with bigger clubs, but it's not loud enough to be a problem inside apartments because air is a terrible conductor of sound. Also, a city is already noisy and that's to be expected 24/7.