By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.
6 rows affected
| Foo | OtherKeyId |
|---|---|
| A | null |
| B | 1 |
| C | 1 |
| C | 2 |
Warning: Null value is eliminated by an aggregate or other SET operation.
6 rows affected
| Foo | OtherKeyId |
|---|---|
| A | null |
| B | 1 |
| C | 1 |
| C | 2 |
Warning: Null value is eliminated by an aggregate or other SET operation.