Cominciamo dal confronto "Non-Pairwise":
Purtroppo non ho questa tabella... Ho provato a farmela io... ma non capisco, quando questa query ritorna delle righe?codice:SELECT employee_id, manager_id, department_id FROM employees WHERE manager_id IN (SELECT manager_id FROM employees WHERE first_name = 'John') AND department_id IN (SELECT department_id FROM employees WHERE first_name = 'John') AND first_name <> 'John';