good reading, thanks
On Thu, Jun 3, 2021 at 9:21 PM Tom Lane <tgl@xxxxxxxxxxxxx> wrote:
Adrian Klaver <adrian.klaver@xxxxxxxxxxx> writes:
> On 6/3/21 12:01 PM, Bruce Momjian wrote:
>> On Thu, Jun 3, 2021 at 08:58:03PM +0200, Marc Millas wrote:
>>> within a function, I want to create another function.
>> You can't create functions inside of functions; same for procedures.
> Sure you can:
Yeah. The actual problem here is that Marc is expecting variable
substitution to occur within a utility (DDL) statement, which it
doesn't. The workaround is to build the command as a string and
use EXECUTE, as Adrian illustrated:
> EXECUTE 'create function ' || bidule || '() RETURNS void language
> plpgsql AS $fnc$ BEGIN END; $fnc$ ';
This is not terribly well explained in the existing docs. I tried
to improve the explanation awhile ago in HEAD:
https://www.postgresql.org/docs/devel/plpgsql-statements.html#PLPGSQL-STATEMENTS-GENERAL-SQL
regards, tom lane
