/Doc/includes/sqlite3/mysumaggr.py
http://unladen-swallow.googlecode.com/ · Python · 20 lines · 16 code · 4 blank · 0 comment · 0 complexity · 2d3c0e1c5d46bf969b13571edb67a8ed MD5 · raw file
- 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]