Re: pg_restore --no-post-data and --post-data-only

On 08/31/2011 04:03 PM, Alvaro Herrera wrote:
>>>
>>> Well, the Unix approach is to use tools that do one thing well to build up more complex tools. Making pg_dump run some external command to inject things into the stream seems like the wrong thing given this philosophy. Use pg_dump to get the bits you want (pre-data, post-data) and sandwich them around whatever else you want.
>> I agree... except for one little niggling concern: If pg_dump is injecting something, then the DDL is being grabbed with a single, consistent snapshot. --pre and --post do not get you that (though we could probably use the new ability to export snapshots to fix that...)
> Eh, --pre and --post are pg_restore flags, so you already have a
> consistent snapshot.
>

We've been talking about adding them for pg_dump too.

I take Jim's point about the snapshot, but I still don't feel it's a 
good reason to allow some arbitrary code or script to be run between 
them (and after all, it's not likely to run with the same snapshot anyway).


cheers

andrew