I’ve worked on tools for this a bunch of times and one particular instance was my favorite. Checksums were used for equivalence - but the real fun was in displa

I’ve worked on tools for this a bunch of times and one particular instance was my favorite. Checksums were used for equivalence - but the real fun was in displaying the differences in a meaningful way. We’d show: - which columns were only in the left, or only in the right - and then show which rows are only in the left, or only on the right - and then for rows that are in both but have some cell differences show a set that shows those differences. (Hard to explain how this was done… it was concise but rich with details.) This kind of “thorough” comparison was very useful for understanding the differences all at once.