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6 rows affected
| parent | child |
|---|---|
| A | D |
| B | E |
| B | F |
| C | null |
Warning: Null value is eliminated by an aggregate or other SET operation.
6 rows affected
| parent | child |
|---|---|
| A | D |
| B | E |
| B | F |
| C | null |
Warning: Null value is eliminated by an aggregate or other SET operation.