Man, this is exactly what I did at a previous job. We had a massive Query engine as a part of our BI product. I've recoded the entire sorting algorithm to use variadic templates to get a sorter for any set of column types in one go, rather than dereferencing a pointer for each column. We've observed massive improvements in speed (more like 50%, rather than 100x mentioned here. However, that codebase has been constantly optimized over the last 25 years).