"David E. Wheeler" <da...@kineticode.com> writes:
> On Dec 10, 2010, at 1:50 PM, Dimitri Fontaine wrote:
> (Actually, we could probably assume that the target version is
> implicitly "the current version", as identified from the control file,
> and omit that from the script file names.  That would avoid ambiguity
> if version numbers can have more than one part.)
>> 
>> I don't think we can safely design around one part version numbers here,
>> because I'm yet to see that happening in any extension I've had my hands
>> on, which means a few already, as you can imagine.

> Why not? Simplest thing, to my mind, is to have

>   upgrade/foo-1.12.sql
>   upgrade/foo-1.13.sql
>   upgrade/foo-1.15.sql

> Since you know the existing version number, you just run all that come after. 
> For example, if the current version is 1.12, then you know to run 
> foo-1.13.sql and foo-1.15.sql.

If we assume the target is the current version, then we only need the
old-version number in the file name, so it doesn't matter how many
parts it has.

                        regards, tom lane

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