In my case I failed at fizzbuzz because I was interviewing after spending a full day merging 2 versions of dbdumps into one, while getting rid of duplicate entr

In my case I failed at fizzbuzz because I was interviewing after spending a full day merging 2 versions of dbdumps into one, while getting rid of duplicate entries/foreign keys, etc. I could still do a pseudo code version of it, but I couldn't remember modulo function. At all.