Move data from a postgres database to another database with a different owner

Question

I have two postgres databases with the same structure and tables, hosted on the same server, the databases are owned by different users:

database1 : owner1

database2 : owner2

I want to know the best way to copy the content of database1 into database2 (overriding the original content of database2 ).

I tried pg_dump & pg_restore but the dump will explicitly specify owner1 as the owner of the tables and then I have permission issues when trying to get the data from database2 using owner2 . I had to manually re-grant all privileges on database2 to owner2 and set the owner of all tables again to owner2 .

My approach:

pg_dump database1 > database1.psql

postgres=# drop database database2;
postgres=# create database database2;

psql --d database2  -f database1.psql

Is there a simpler way to copy the data from database1 to database2 without having to update the user permissions manually after the restore.

Answer 1

Yes, you can use pg_dump to specify that you don't want to export ownership:

• -O (or --no-owner ) does not export ownership
• -x (or --no-privileges ) Prevent dumping of access privileges (grant/revoke commands)

    pg_dump db_name -O -x > output_file