The SQL standard defines far more than you'd want in a web browser, and I'm not sure anyone actually wants all of it. So someone has to sit down and define whic

The SQL standard defines far more than you'd want in a web browser, and I'm not sure anyone actually wants all of it. So someone has to sit down and define which bits to cut out, anyway... and then browser developers have to develop a database engine, which I'm fairly sure none want to do. We barely have any open-source software that implements SQL correctly as it is.