Comments on: How to export table data to file / csv – PostgreSQL http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/ Thoughts on Java, Maven, Hibernate, Spring , Ajax web development Thu, 11 Mar 2010 18:41:05 +0000 http://wordpress.org/?v=abc hourly 1 By: virender http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-5552 virender Thu, 11 Feb 2010 10:07:17 +0000 http://www.mkyong.com/?p=188#comment-5552 Hi mkyong, I think also need to \o after completion.... Hi mkyong,

I think also need to \o after completion….

]]> By: mkyong http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1842 mkyong Tue, 30 Jun 2009 14:24:49 +0000 http://www.mkyong.com/?p=188#comment-1842 Thanks for your tips Thanks for your tips

]]> By: Annoyed Programmed http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1841 Annoyed Programmed Tue, 30 Jun 2009 14:20:54 +0000 http://www.mkyong.com/?p=188#comment-1841 Oops looks like someone else already suggested copy. I wish they had mentioned that it would handle the escaping cleanly. Oops looks like someone else already suggested copy.

I wish they had mentioned that it would handle the escaping cleanly.

]]> By: Annoyed Programmed http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1840 Annoyed Programmed Tue, 30 Jun 2009 14:18:37 +0000 http://www.mkyong.com/?p=188#comment-1840 OK. I finally figured out the right way to do this. Basically you need to use the COPY command. I.e. COPY (SQL_QUERY) TO FILE_NAME WITH CSV HEADER e.g. psql -p 5433 -U dba dbname -c “COPY (select url from urltable where scoreid=1 limit 25000) TO STDOUT WITH CSV HEADER;” > /home/yongmo/data25000.csv I'm glad this there's a way to do this but I wish it was better documented. OK. I finally figured out the right way to do this.

Basically you need to use the COPY command. I.e.

COPY (SQL_QUERY) TO FILE_NAME WITH CSV HEADER

e.g.

psql -p 5433 -U dba dbname -c “COPY (select url from urltable where scoreid=1 limit 25000) TO STDOUT WITH CSV HEADER;” > /home/yongmo/data25000.csv

I’m glad this there’s a way to do this but I wish it was better documented.

]]> By: mkyong http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1837 mkyong Tue, 30 Jun 2009 05:23:55 +0000 http://www.mkyong.com/?p=188#comment-1837 Hi , thanks for your comment, i didn't know about it. Ya it may not work in your case (escaping) , however it work fine in most of the case, usually data wont care about escape right? Hi , thanks for your comment, i didn’t know about it. Ya it may not work in your case (escaping) , however it work fine in most of the case, usually data wont care about escape right?

]]> By: Annoyed Programmed http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1835 Annoyed Programmed Mon, 29 Jun 2009 21:43:12 +0000 http://www.mkyong.com/?p=188#comment-1835 PLEASE DON'T TRY THIS. THIS DOESN'T DO ANY ESCAPING. If your data contains comments in field data your files will break. Data with embedded new lines will be even worst. Postgresql needs a real export to CSV for select statements. Unfortunately in does have this functionality. PLEASE DON’T TRY THIS.

THIS DOESN’T DO ANY ESCAPING.

If your data contains comments in field data your files will break. Data with embedded new lines will be even worst.

Postgresql needs a real export to CSV for select statements. Unfortunately in does have this functionality.

]]> By: mkyong http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1711 mkyong Tue, 19 May 2009 13:55:14 +0000 http://www.mkyong.com/?p=188#comment-1711 hi ressu, Thanks for tips ~ hi ressu,

Thanks for tips ~

]]> By: ressu http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1710 ressu Tue, 19 May 2009 10:01:14 +0000 http://www.mkyong.com/?p=188#comment-1710 Why not use \copy \copy (select url from urltable where scoreid=1 limit 25000) TO '/tmp/filename.csv' CSV \copy command can do various other tricks aswell. Why not use \copy

\copy (select url from urltable where scoreid=1 limit 25000) TO ‘/tmp/filename.csv’ CSV

\copy command can do various other tricks aswell.

]]> By: mkyong http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1599 mkyong Sun, 26 Apr 2009 16:06:30 +0000 http://www.mkyong.com/?p=188#comment-1599 Hi No, Is /c:/no a folder? Just type "\o /c:/no/dummy.csv" Hope help Hi No,

Is /c:/no a folder? Just type “\o /c:/no/dummy.csv”

Hope help

]]> By: No http://www.mkyong.com/database/how-to-export-table-data-to-file-csv-postgresql/comment-page-1/#comment-1576 No Thu, 23 Apr 2009 08:21:16 +0000 http://www.mkyong.com/?p=188#comment-1576 Thank. if i want to save in my computer in /c:/no file can you rewrite command for me please Many Thank. Thank.

if i want to save in my computer in /c:/no file can you rewrite command for me please

Many Thank.

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