By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.
| int_arg | is_date | is_date_chr | as_date | as_old_and_horrible_datetime |
|---|---|---|---|---|
| 10000 | 0 | 0 | null | null |
| 9999 | 1 | 1 | 9996-01-01 | 9996-01-01 00:00:00.000 |
| 9996 | 1 | 1 | 9996-01-01 | 9996-01-01 00:00:00.000 |
| 8234 | 1 | 1 | 8234-01-01 | 8234-01-01 00:00:00.000 |
| 7234 | 1 | 1 | 7234-01-01 | 7234-01-01 00:00:00.000 |
| 6234 | 1 | 1 | 6234-01-01 | 6234-01-01 00:00:00.000 |
| 5234 | 1 | 1 | 5234-01-01 | 5234-01-01 00:00:00.000 |
| 4234 | 1 | 1 | 4234-01-01 | 4234-01-01 00:00:00.000 |
| 3234 | 1 | 1 | 3234-01-01 | 3234-01-01 00:00:00.000 |
| 2234 | 1 | 1 | 2234-01-01 | 2234-01-01 00:00:00.000 |
| 1754 | 1 | 1 | 1754-01-01 | 1754-01-01 00:00:00.000 |
| 1753 | 1 | 1 | 1753-01-01 | 1753-01-01 00:00:00.000 |
| 1752 | 0 | 0 | 1752-01-01 | null |
| 1751 | 0 | 0 | 1751-01-01 | null |
| 1234 | 0 | 0 | 1234-01-01 | null |