From: | Boszormenyi Zoltan <zb(at)cybertec(dot)at> |
---|---|
To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
Cc: | Michael Meskes <michael(at)fam-meskes(dot)de>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: ECPG dynamic cursor fix for UPDATE/DELETE ... WHERE CURRENT OF :curname |
Date: | 2010-08-05 14:41:38 |
Message-ID: | 4C5ACDA2.50308@cybertec.at |
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Lists: | pgsql-hackers |
Kevin Grittner írta:
> Michael Meskes <michael(at)fam-meskes(dot)de> wrote:
>
>> All prior ECPG versions were fine because dynamic cursor names
>> were only added in 9.0. Apparently only this one place was
>> missed. So this is a bug in the new feature, however not such a
>> major one that it warrants the complete removal IMO. I'd prefer to
>> fix this in 9.0.1.
>>
As we are so late in the beta phase, we can live with that, hopefully
you will find time by then to review the patch which is actually not
that complex, only a bit large. The part of ECPGdo() that deals with
auto-preparing statements is moved closer to calling ecpg_execute(),
after the varargs are converted to stmt->inlist and ->outlist.
>> Hope this cleans it up a bit.
>>
>
> Thanks. I think I get it now.
>
> To restate from another angle, to confirm my understanding: UPDATE
> WHERE CURRENT OF is working for cursors with the name hard-coded in
> the embedded statement, which is the only way cursor names were
> allowed to be specified prior to 9.0; 9.0 implements dynamic cursor
> names, allowing you to use a variable for the cursor name; but this
> one use of a cursor name isn't allowing a variable yet. Do I have
> it right? (If so, I now see why it would be considered a bug.)
>
Yes, you understand it correctly.
Best regards,
Zoltán Böszörményi
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