Re: Query regarding selectDumpableExtension()

On Thu, Oct 27, 2016 at 2:11 AM, amul sul <sulamul(at)gmail(dot)com> wrote:
> selectDumpableExtension() function skip
> s dump of
> built-in extensions in case of binary-upgrade only,
> why not in normal
> dump
> ?
> Can't we assume those will already be installed in the target database
> at restore
> ?

There's a comment in dumpExtension() that explains it.

/*
* In a regular dump, we use IF NOT EXISTS so that there isn't a
* problem if the extension already exists in the target database;
* this is essential for installed-by-default extensions such as
* plpgsql.
*
* In binary-upgrade mode, that doesn't work well, so instead we skip
* built-in extensions based on their OIDs; see
* selectDumpableExtension.
*/

--
Robert Haas
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