Yeah. Many database tables are too large for an in memory hash join. My comment was a not very well fleshed out tangential remark on the value of practicing DS

Yeah. Many database tables are too large for an in memory hash join. My comment was a not very well fleshed out tangential remark on the value of practicing DS&A problems. I know a lot of devs hate Leetcode style interviews. I get it. It's not fun. But contrary to what some people say, I have run into a fair number of situations where the practice helped me implement more efficient solutions.