1 import sqlite3 2 3 def collate_reverse(string1, string2): 4 return -cmp(string1, string2) 5 6 con = sqlite3.connect(":memory:") 7 con.create_collation("reverse", collate_reverse) 8 9 cur = con.cursor() 10 cur.execute("create table test(x)") 11 cur.executemany("insert into test(x) values (?)", [("a",), ("b",)]) 12 cur.execute("select x from test order by x collate reverse") 13 for row in cur: 14 print row 15 con.close() 16
