SELECT COUNT (*) FROM Clan;

SELECT COUNT (DISTINCT Sifc) FROM Zaduzenje;

SELECT COUNT (*) FROM Napisao WHERE Sifp = 'p5';

SELECT SUM (Dana) FROM Zaduzenje;

SELECT MIN (Dana), MAX (Dana) FROM Zaduzenje;

SELECT SUM (Dana), AVG (Dana) FROM Zaduzenje WHERE Sifc = 'c1';