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| id | part_number | serial_number | qty |
|---|---|---|---|
| 1 | A | 12345 | 1 |
| 2 | A | 54321 | 1 |
| 3 | A | 67890 | 1 |
| 4 | B | null | 10 |
| 6 | C | null | 6 |
| id | part_number | serial_number | qty |
|---|---|---|---|
| 1 | A | 12345 | 1 |
| 2 | A | 54321 | 1 |
| 3 | A | 67890 | 1 |
| 4 | B | null | 10 |
| 6 | C | null | 6 |