Re: BUG #14048: copy issues with jsonb

On Sun, Mar 27, 2016 at 8:04 AM, <rotten(at)windfish(dot)net> wrote:

> The following bug has been logged on the website:
>
> Bug reference: 14048
> Logged by: Rick Otten
> Email address: rotten(at)windfish(dot)net
> PostgreSQL version: 9.5.1
> Operating system: Ubuntu 14.04
> Description:
>
> I have a few jsonb columns in a table and I've run into several issues with
> COPY with that column type. I didn't see anything specific about it in the
> to-do list, and Google didn't turn up anyone else specifically complaining,
> so I'm filing it here. I apologize if this is a known issue.
>
> The table is the backend for a web pixel (tracking) service. It has 4
> jsonb
> columns which contain variable data about the browser and session. (parsed
> user agent, list of cookies, query parameters, etc...)
>
> I wanted to copy a section of the table from one 9.5.1 database to another.
>
> For some reason the CSV and TEXT format exports do not quote/escape the
> nested JSON very well - after several tries, I gave up on that approach.
> The "copy to" output appears to be too mangled. It was not obvious, at
> first glance, where it is getting confused.

​[...]
>

> Meanwhile, I'll use pg_dump to get the rows I need. Hopefully that will be
> able to extract and reload the jsonb data ok. pg_dump hasn't been a
> problem
> in the past anyway...
>

​I'm reasonably certain pg_dump/pg_restore makes use of "COPY" to perform
its work - at least for custom format and plain non-inserts mode​ - so if
that works but whatever you are doing manually does not there is some
degree of suspicion that what you are doing may be incorrect.

We really need a sample record and a self-contained script that you can
make reproduce this behavior.

David J.