Re: Parallel execution and prepared statements

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От Albe Laurenz
Тема Re: Parallel execution and prepared statements
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Msg-id A737B7A37273E048B164557ADEF4A58B5399FCDF@ntex2010i.host.magwien.gv.at
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Ответ на Re: Parallel execution and prepared statements  (Tobias Bussmann <t.bussmann@gmx.net>)
Ответы Re: Parallel execution and prepared statements  (Robert Haas <robertmhaas@gmail.com>)
Список pgsql-hackers
Tobias Bussmann wrote:
>> I think if we don't see any impact then we should backpatch this
>> patch. However, if we decide to go some other way, then I can provide
>> a separate patch for back branches.  BTW, what is your opinion?
> 
> I could not find anything on backporting guidelines in the wiki but my opinion would be to backpatch
> the patch in total. With a different behaviour between the simple and extended query protocol it would
> be hard to debug query performance issue in user applications that uses PQprepare. If the user tries
> to replicate a query with a PREPARE in psql and tries to EXPLAIN EXECUTE it, the results would be
> different then what happens within the application. That behaviour could be confusing, like
> differences between EXPLAIN SELECT and EXPLAIN EXECUTE can be to less experienced users.

+1

Yours,
Laurenz Albe


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