Re: pl/{perl,pgsql} (was Re: AW: [HACKERS] triggers, views and ru

>
> Jan, I think you describe the correct picture of what is needed for
> PL/pgSQL.
>
> My comments:
> >     No  actual  development  -  just have something in mind how I
> >     would implement it. I'll get into details after 6.3  release.
> >     PL/pgSQL will have at least the following capabilities:
> >
> >         - local variable
>         local to the procedure (in a per call context)

    Of course.

>     I think it will also need:
>            - global variable
>         in a session context (standard mentions these also)

    Might be good either. Thanks.

> >         - local records
> >         - access to the database over SPI
> >         - control structures (if/else/while/loop)
> >         - elog messages
> >         - triggers can modify new tuple
> >         - triggers can skip operation
> >
>
> >     If  perl doesn't have such a restricted interpreter facility,
> >     then perl might never become a  TRUSTED  procedural  language
> >     like  Tcl  is.
>
> There is taintperl.
> I don't see anything that speaks against 2 variants of pl/perl. One trusted,
> using taintperl
> and one untrusted opening the internals to superusers, like in C.

    PL/Tcl could be enhanced to do this too. Will make it in the
    future.

> BTW.: How do you write an input or output function in pl/tcl if all you get
> is the external representation ?

    Impossible.

>
> Andreas
>
> P.S.: there is no need to email me directly, unless you need something very
> fast,
>     since I do read all pgsql-hackers mail in the digest. Thanx all.
>
>


Jan

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