"David E. Wheeler" <david(at)kineticode(dot)com> writes:
> On Dec 29, 2010, at 2:01 PM, Dimitri Fontaine wrote:
>> At the time you tell PostgreSQL about the new extension, the shared
>> object file has been in place for some time already, and the upgrade SQL
>> script has not been ran yet.
> That sounds dangerous.
It is, but I don't see any alternative. As Dimitri said, the .so will
typically be installed by a packaging system, so we don't have any
opportunity to run SQL code beforehand. In any case ...
> The new .so should not be installed until the upgrade is been run.
... that flat out doesn't work. If the upgrade script tries to add
functions that didn't exist in the old .so, it'll fail.
regards, tom lane
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