You've used many of these without even knowing it.

Researchers at the Organisation for Economic Co-operation and Development (OECD), working through the Directorate for Science, Technology and Innovation, have introduced a new global data platform to ...

UPDATE Employees SET manager_id = 108 WHERE dept_id = 1 AND emp_id NOT IN (108); UPDATE Employees SET manager_id = 109 WHERE emp_id IN (110,111,124,125,126,142,143); UPDATE Employees SET manager_id = ...