About the series: perlancar's 2014 Advent Calendar: Introduction to a selection of 24 modules which I published in 2014. Table of contents. Frankly, I was a bit surprised when searching for an existing CPAN module for this task and found none. There is DBIx::Compare, but it is for database contents and not structure (it can compare two tables' field names though). Hence DBIx::Diff::Struct. An exam