import sqlite3

conn = sqlite3.connect('friends.sqlite')
cur = conn.cursor()

cur.execute('SELECT * FROM Osoby')
count = 0
print('Osoby:')
for row in cur:
    if count < 5: print(row)
    count = count + 1
print(count, 'wierszy.')

cur.execute('SELECT * FROM Obserwuje')
count = 0
print('\nObserwuje:')
for row in cur:
    if count < 5: print(row)
    count = count + 1
print(count, 'wierszy.')

cur.execute('''SELECT * FROM Obserwuje JOIN Osoby
            ON Obserwuje.id_do = Osoby.id
            WHERE Obserwuje.id_od = 2''')
count = 0
print('\nPołączenia dla id=2:')
for row in cur:
    if count < 5: print(row)
    count = count + 1
print(count, 'wierszy.')

cur.close()