Re: How to: copy records from one table to another?

not sure if its been mentioned.

pg_dump -v -t (the specific table you want) which gives you the data plus the table create plus the sql

edit sql if need be

psql -d newdatabase < theFileAbove

Doug Easterbrook
Arts Management Systems Ltd.
mailto:doug(at)artsman(dot)com
http://www.artsman.com
Phone (403) 650-1978

> On Mar 25, 2019, at 7:29 AM, Calle Hedberg <calle(dot)hedberg(at)gmail(dot)com> wrote:
>
> Hi
>
> I often use CSV as a step too:
> - Dump the data you want to work on, copy/edit or whatever from db 1 in csv
> - Copy the SQL for the same source table design and use it to create a similar table in db 2 (using a different name where necessary)
> - import the CSV data into that new table in db2
> Then using the usual scripting tools to add/edit/delete the related data in db2.
>
> I was unable to get foreign data wrappers to perform for larger data set updates recently (few hundred million records), at least when those dbs were on remote servers. Transferring a copy via CSV to use for the updates were quick and easy.
>
> Regards
> Calle
>
> On Mon, 25 Mar 2019 at 14:04, Dave Caughey <caugheyd(at)gmail(dot)com <mailto:caugheyd(at)gmail(dot)com>> wrote:
> Hi Khushboo,
>
> And then what's the process to upload the downloaded records into the other database?
>
> Cheers,
> Dave
>
>
> On Mon, Mar 25, 2019 at 12:14 AM Khushboo Vashi <khushboo(dot)vashi(at)enterprisedb(dot)com <mailto:khushboo(dot)vashi(at)enterprisedb(dot)com>> wrote:
>
>
> On Fri, Mar 22, 2019 at 6:06 PM Dave Caughey <caugheyd(at)gmail(dot)com <mailto:caugheyd(at)gmail(dot)com>> wrote:
> Sorry, for the basic question, but I'm not sure if there are bug(s) in pgAdmin, or just that I'm clueless. (My money lies on the latter!)
>
> Imagine the scenario where you are adding a feature to a product that requires adding some new rows to a configuration table, and as part of the patch you need to replicate a bunch of record from your development database to your production databases.
>
> You'd think there'd be a number of options, e.g.,
>
> 1. After doing a "View/Edit..." | "Filter by", select the displayed records, click "copy" to get them on to the clipboard, then go to the production database, do a "View/Edit..." on the corresponding table, and paste. But, in my case, I need my auto-sequenced "id" column to be omitted (so it gets re-generated in the new table), so perhaps this isn't the right choice. Even worse, over the years, my database tables (auto-created via Hibernate used in a Java Servlet) no longer have the same column order. (Question: is there no way that copy-and-paste between tables can consider the column names so copying between (int id,int feature_id,text name) and (int id,text name,int feature_id) is possible?)
>
> 2. Or, I could right-click on the table and use Import/Export..." (Question: is there a way to filter the records that will get exported? Or is there a way to trigger import/export on the results of a "View/Edit..." | "Filter by"?). However, here the issue is the columns no longer have the same order (e.g., (int,int,text) vs (int,text,int)) so "Import/Export..." fails. (Question: Is that not what the "Header" toggle is supposed to do? I see that enabling it during export *adds* a header to the export files, but shouldn't enabling it during import cause it to be used to identify the order?). This method has the attraction that I can use the "Columns" tab to exclude one of the columns from my export (i.e., my auto-sequenced "id" column).
>
> 3. Or, I could do a "Backup..." and then a corresponding "Restore..." , but I noticed that there the generated file contains CREATE DATABASE bits of code even though the "Include CREATE DATABASE" toggle in the Backup..." dialog is set to "No" (Question: bug, or my misunderstanding?). But I'm guessing that a backup/restore will generally do a complete and utter restore, rather than just moving some data.
>
> 4. Other options?
>
> How about Download as CSV option?
> So, what is the best/simplest way to copy data between tables, given the possibility that some/all might apply?
> The columns may be in a different order in different databases
> One column might need be left blank
> I only want to copy some of the records
> Cheers,
> Dave
>
>
> --
> Carl-Anders (Calle) Hedberg <>
> HISP
>
> Researcher & Technical Specialist
>
> Health Information Systems Programme – South Africa
>
> Cell: +47 41461011 (Norway)
>
> Iridium SatPhone: +8816-315-19119 (usually OFF)
>
> E-mail1: calle(at)hisp(dot)org <mailto:calle(at)hisp(dot)org>
> E-mail2: calle(dot)hedberg(at)gmail(dot)com <mailto:calle(dot)hedberg(at)gmail(dot)com>
> Skype: calle_hedberg
>