Re: Pseudocode / Pseudo-Types

On Mon, 2021-03-15 at 13:55 +0000, soumik(dot)bhattacharjee(at)kpn(dot)com wrote:
> Has anybody has a use case for using Pseudocode / Pseudo-Types?
>
> Any inputs will be helpful and if any reference sites to check some example use cases are also good to start with.
>
> Thanks in advance...

Pseudocode, as in

while (there is something to do)
process_one_item();

is a tool to write down an algorithm in a way that is easy for
programmers to understand.

Pseudo-types, as in
https://www.postgresql.org/docs/current/datatype-pseudo.html
are something entirely different.

Here is a useful example:

CREATE FUNCTION successor(anyelement) RETURNS anyelement
LANGUAGE sql AS 'SELECT $1 + 1';

SELECT successor(41);

successor
-----------
42
(1 row)

SELECT successor(current_date);

successor
------------
2021-03-16
(1 row)

Yours,
Laurenz Albe
--
Cybertec | https://www.cybertec-postgresql.com