cpython/Doc/includes/sqlite3/mysumaggr.py
Xtreak 287b84de93 bpo-34580: Update sqlite3 examples to call close() explicitly (GH-9079)
The sqlit3.Connection object doesn't call its close() method when it's used
as a context manager.
2019-05-20 00:52:20 +03:00

22 lines
484 B
Python

import sqlite3
class MySum:
def __init__(self):
self.count = 0
def step(self, value):
self.count += value
def finalize(self):
return self.count
con = sqlite3.connect(":memory:")
con.create_aggregate("mysum", 1, MySum)
cur = con.cursor()
cur.execute("create table test(i)")
cur.execute("insert into test(i) values (1)")
cur.execute("insert into test(i) values (2)")
cur.execute("select mysum(i) from test")
print(cur.fetchone()[0])
con.close()