2 ms·
Isn't a full outer join a Descartes product? And thus any other join is just a special case where rows get selected/projected/filtered out?
by pas 7y ago
Isn't a full outer join a Descartes product? And thus any other join is just a special case where rows get selected/projected/filtered out?
- ithkuil 7y agoThe Cross join is a Cartesian product. Good read: https://en.m.wikipedia.org/wiki/Join_(SQL) https://en.m.wikipedia.org/wiki/Join_(SQL)