By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.
CREATE TABLE
INSERT 0 3
| person_id | first_name | last_name | full_name |
|---|---|---|---|
| 1 | Jon | Doe | Jon Doe |
| 2 | OnlyFirst | null | OnlyFirst |
| 3 | null | OnlyLast | OnlyLast |
SELECT 3
CREATE TABLE
INSERT 0 3
| person_id | first_name | last_name | full_name |
|---|---|---|---|
| 1 | Jon | Doe | Jon Doe |
| 2 | OnlyFirst | null | OnlyFirst |
| 3 | null | OnlyLast | OnlyLast |
SELECT 3