MeanSquaredError

@rbock I think it is a great change even if it is a breaking one, because with the current codebase whenever I use sqlpp, I always end up writing boilerplate...

Regarding the dynamic queries, just like everyone else I try to avoid them and only use them when static queries would cause too much code duplication :-) Overall depending on...

> > `std::string_view` and `std::span` are not owning the data, so I guess the data will be released when the corresponding row object is destroyed > > It might be...

> I wonder how the transition would work? There is a release called 1.0, but how would the somewhat experimental code be called before marking 2.0? Keep it in the...

OK, tried the `optional` branch of sqlpp and my first impressions from the changes are good! Building sqlpp + tests (core, postgresql, mysql, sqlite) with `g++ (GCC) 14.1.1 20240522 (Red...

@CJCombrink If I remember correctly the SQL standard requires any PRIMARY KEY column to be NOT NULL. However I don't have the standard handy, so I cannot quote the relevant...

@rbock Tomorrow I will prepare a PR with a fix for this bug in ddl2cpp. On a side note, it seems that the `optional` branch at github lacks this commit...

@rbock Thanks for the new version. It built without a problem, apart from a bunch of warnings in the tests. I assume that the warnings are expected as most of...

> Thanks for testing. And sorry, I apparently should have said this clearer: This new branch is strictly less than the `optional` branch. I ripped out all dynamic parts and...

@margaretselzer You need to : - Fork the sqlpp11 project on GitHub, using the fork button in the upper right part of the screen. - Setup the git credentials for...