| import sqlite3 | |
| def collate_reverse(string1, string2): | |
| return -cmp(string1, string2) | |
| con = sqlite3.connect(":memory:") | |
| con.create_collation("reverse", collate_reverse) | |
| cur = con.cursor() | |
| cur.execute("create table test(x)") | |
| cur.executemany("insert into test(x) values (?)", [("a",), ("b",)]) | |
| cur.execute("select x from test order by x collate reverse") | |
| for row in cur: | |
| print(row) | |
| con.close() |