Re: Extended Query, flush or sync ? - Mailing list pgsql-general

From Raimon Fernandez
Subject Re: Extended Query, flush or sync ?
Date
Msg-id 0251DAA7-FF5F-4F83-8F77-05A99EAB2432@montx.com
Whole thread Raw
In response to Implementing Frontend/Backend Protocol TCP/IP  (Raimon Fernandez <coder@montx.com>)
List pgsql-general
On 18/12/2009, at 22:55, Tom Lane wrote:

> Raimon Fernandez <coder@montx.com> writes:
>> It's not clear for me if I have to issue a flush or sync after each process of an extended query.
>
> Basically, you send one of these at the points where you're going to
> wait for an answer back.  Sync is different from Flush in that it also
> provides a resynchronization point after an error: when the backend hits
> an error while processing a given message, it ignores following messages
> up to the next Sync.

So I have to send on of these after sending a Parsing comand, a Bind comand, and Execute ?

It's normal that I don't receive nothing if I send a Flush instead of a Sync ?

regards and thanks,


raimon

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