Method finalize

pattern/db/__init__.py:371–372

(self)

class sqlite_group_concat(list):
    def step(self, value): self.append(value)
    def finalize(self):
        return ",".join(string(v) for v in self if v is not None)

# SQLite (and MySQL) date string format: 
# yyyy-mm-dd hh:mm:ss