Re: COPY between 7.4.x and 8.3.x

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От Francisco Reyes
Тема Re: COPY between 7.4.x and 8.3.x
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Msg-id ffc76bbaf910294d79b6736910f55d53@stringsutils.com
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Ответ на COPY between 7.4.x and 8.3.x  (Jack Orenstein <jack.orenstein@hds.com>)
Ответы Re: COPY between 7.4.x and 8.3.x  (Jack Orenstein <jack.orenstein@hds.com>)
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On 4:05 pm 07/21/08 Jack Orenstein <jack.orenstein@hds.com> wrote:
> We will now be adding 8.3.x databases to the mix, and will need to
> copy between 7.4.x and 8.3.x in both directions. The datatypes we use

I believe it should work.
Also, one feature I believe started in the 8.X line (8.2?), is the ability
to have a subquery in the copy command to refine what rows you are getting.

> What if we do a binary copy instead?
What do you mean by a binary copy?
pg_dump -Fc?

I think a plain pg_dump and copy will likely be more portable. Specially
going from 8.3 to 7.4.

Why will you keep copying data back and forth?
Not possible to setup a new 8.3, migrate to it and then upgrade the other
7.4 machine to 8.3?


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