Re: Proposal: USING clause for DO statement

2009/11/21 Petr Jelinek <pjmodos@pjmodos.net>:
> I don't see point in having parameters for DO as an utility command. If you
> need to reuse some value you can define those variables at the beginning of
> code block in the language itself (in DECLARE section in plpgsql for
> example), defining them in outer SQL command does not really help anything.

no - this isn't a problem. Current design of DO statement allows only
single-use using. I cannot to wrap "do" statement. I would to use this
statement for some non trivial maintenance tasks - and I would to use
external parameter (from command line). My question is - what is a
good way for passing some value (from command line) to DO statement
body? I accept any mechanism.

> Now, if/when we add support to put DO inside standard sql query, it would be
> vastly more useful to be able to use parameters. But adding that support
> will be probably least of our problems if we try to do that, and we might
> even want to use different syntax/behavior then, so I would really not rush
> with this.

It doesn't need too much, Petr - I thing, so all necessary is done.
And this proposal doesn't do incompatible changes in syntax. It add
only new optional clause.


>
> --
> Regards
> Petr Jelinek (PJMODOS)
>
>