| Gerhard Häring | 82560eb | 2006-05-01 15:14:48 +0000 | [diff] [blame^] | 1 | import sqlite3
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| 2 |
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| 3 | class MySum:
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| 4 | def __init__(self):
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| 5 | self.count = 0
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| 6 |
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| 7 | def step(self, value):
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| 8 | self.count += value
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| 9 |
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| 10 | def finalize(self):
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| 11 | return self.count
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| 12 |
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| 13 | con = sqlite3.connect(":memory:")
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| 14 | con.create_aggregate("mysum", 1, MySum)
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| 15 | cur = con.cursor()
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| 16 | cur.execute("create table test(i)")
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| 17 | cur.execute("insert into test(i) values (1)")
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| 18 | cur.execute("insert into test(i) values (2)")
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| 19 | cur.execute("select mysum(i) from test")
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| 20 | print cur.fetchone()[0]
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