Re: enhance SPI to support EXECUTE commands

I don't see much use for this because the documentation says that "server's
execute command cannot be used directly within pl/pgsql function (and it is
not needed). Within pl/pgsql you can execute update/delete commands using
pl/pgsql EXECUTE command and get results like row_count using "get
diagnostic".

Why would somebody do what you have shown in your example in pl/pgsql? Or
do you have a more general use-case for this enhancement?

On Thu, Sep 5, 2019 at 11:39 AM Quan Zongliang <
zongliang(dot)quan(at)postgresdata(dot)com> wrote:

> Dear hackers,
>
> I found that such a statement would get 0 in PL/pgSQL.
>
> PREPARE smt_del(int) AS DELETE FROM t1;
> EXECUTE 'EXECUTE smt_del(100)';
> GET DIAGNOSTICS j = ROW_COUNT;
>
> In fact, this is a problem with SPI, it does not support getting result
> of the EXECUTE command. I made a little enhancement. Support for the
> number of rows processed when executing INSERT/UPDATE/DELETE statements
> dynamically.
>
> Regards,
> Quan Zongliang
>

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