Re: Document NULL
| От | David G. Johnston |
|---|---|
| Тема | Re: Document NULL |
| Дата | |
| Msg-id | CAKFQuwaYXxsJg0zLoOQ45bLzSybEbdHXHTDkJkKuQW7bH-HBSA@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Document NULL (Marcos Pegoraro <marcos@f10.com.br>) |
| Список | pgsql-hackers |
On Sat, Nov 23, 2024 at 5:30 AM Marcos Pegoraro <marcos@f10.com.br> wrote:
Em qui., 21 de nov. de 2024 às 12:04, David G. Johnston <david.g.johnston@gmail.com> escreveu:Typo in NuLl, mixed upper and lower case.SELECT
NULL AS "Literal Null Value",
pg_typeof(null) AS "Type of Null",
pg_typeof(NuLl::text) AS "Type of Cast null",
cast(null as text) AS "Cast null value";should bepg_typeof(null::text) AS "Type of Cast Null",
That was not a typo. I'm intentionally showing an example demonstrating that the SQL NULL is fully case-insensitive. But I suppose showing both all-upper and all-lower cases fulfills that goal sufficiently. Changed. Went with NULL so there are two of each. Made all of the column headers Title Case.
Thanks!
David J.
В списке pgsql-hackers по дате отправления: