From: | Joe Abbate <jma(at)freedomcircle(dot)com> |
---|---|
To: | Sim Zacks <sim(at)compulab(dot)co(dot)il> |
Cc: | PostgreSQL general <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: PL/Python |
Date: | 2011-10-03 12:17:27 |
Message-ID: | 4E89A7D7.1080500@freedomcircle.com |
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Lists: | pgsql-general |
On 10/03/2011 04:14 AM, Sim Zacks wrote:
> I don't know if there is an official definition, but an extension is
> generally a compiled program that is accessed by the SQL. It must be
> compiled with the postgresql headers and have the magic number defined.
> The compiled file must then be put into the lib directory with the other
> postgresql extensions.
>
> A user defined function does extend postgresql, but it doesn't have any
> of the complications.
As of 9.1 (and I *was* thinking in terms of 9.1 when I wrote
"EXTENSION"), there is a definition in:
http://www.postgresql.org/docs/9.1/static/sql-createextension.html
http://www.postgresql.org/docs/9.1/static/extend-extensions.html
You'll notice that in the latter there is an example of a SQL-only
extension. That's why I thinking of Pyrseas as some plpython functions
as a true EXTENSION.
Joe
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