Raimon Fernandez <[email protected]> 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.
regards, tom lane
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