Datasets:
| async def square_series(con, to): | |
| async with con.transaction(): | |
| cursor = con.cursor( | |
| 'SELECT generate_series(0, $1) AS i', to) | |
| async for row in cursor: | |
| yield row['i'] ** 2 | |
| async for i in square_series(con, 1000): | |
| if i == 100: | |
| break | |