Move cursor support for pl/pgsql

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Move cursor support for pl/pgsql

От:
Magnus Hagander <magnus@hagander.net>
Дата:
Hi!

I took a stab at implementing MOVE support for cursors in PL/pgsql,
because I wanted it for a project. Attached patch *seems* to work. But..
Given that this is my first venture into touching bison/flex files, I
may be completely off-target in how it's done.

Could somebody take a look at it and comment on if I'm completelyi off
or only slightly off?
(And if there are good arguments not to include MOVE support at all in
pl/pgsql, I'd still be interested in comments on the rest of it, in
order to learn..)

Thanks!

//Magnus

Re: Move cursor support for pl/pgsql

От:
Tom Lane <tgl@sss.pgh.pa.us>
Дата:
Magnus Hagander  writes:
> I took a stab at implementing MOVE support for cursors in PL/pgsql,
> because I wanted it for a project. Attached patch *seems* to work. But..
> Given that this is my first venture into touching bison/flex files, I
> may be completely off-target in how it's done.

I disapprove of hard-wiring the fetch count as an integer constant;
there's no good reason not to treat it as an expression.  So you should
drop the T_NUMBER thing.

			regards, tom lane

Re: Move cursor support for pl/pgsql

От:
Magnus Hagander <magnus@hagander.net>
Дата:
Tom Lane wrote:
> Magnus Hagander  writes:
>> I took a stab at implementing MOVE support for cursors in PL/pgsql,
>> because I wanted it for a project. Attached patch *seems* to work. But..
>> Given that this is my first venture into touching bison/flex files, I
>> may be completely off-target in how it's done.
> 
> I disapprove of hard-wiring the fetch count as an integer constant;
> there's no good reason not to treat it as an expression.  So you should
> drop the T_NUMBER thing.

Will do, thanks for commenting. I'm also going to merge it with Pavels
work that I had completely missed earlier.

//Magnus
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