Isolation I guess? I don't know what your experience is and why you think it cannot be anything but slow but... it's not? pgtap lets us unit test our SQL funct

Isolation I guess? I don't know what your experience is and why you think it cannot be anything but slow but... it's not? pgtap lets us unit test our SQL functions, triggers, views, etc. It's integrated with our change management system. It's fast enough and works well.