+----------+--------+-----+
| order_id |   item | qty |
+----------+--------+-----+
|        1 | Widget |   2 |
|        1 | Gadget |   1 |
+----------+--------+-----+
2 rows
+----------+--------+-----+
| order_id |   item | qty |
+----------+--------+-----+
|        2 | Widget |   5 |
|        2 |  Gizmo |   3 |
+----------+--------+-----+
2 rows
+----------+--------+-----+
| order_id |   item | qty |
+----------+--------+-----+
|        3 | Widget |   1 |
+----------+--------+-----+
1 rows
