1 files changed, 20 insertions, 0 deletions
diff --git a/Doc/includes/sqlite3/mysumaggr.py b/Doc/includes/sqlite3/mysumaggr.py
new file mode 100644
index 0000000..6d0cd55
--- /dev/null
+++ b/Doc/includes/sqlite3/mysumaggr.py
@@ -0,0 +1,20 @@
+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]