4

I know I can alter schema name after restoring but the problem is the name might already exist and I don't want to touch that existing schema.

The dump type is "custom".

So effectively I want something like:

pg_dump -U postgres --schema "source_schema" --format "c" --create --file "source_schema.bak" my_db
pg_restore -U postgres --exit-on-error --dbname "my_db" "source_schema.bak" --destination-schema "destination_schema"

If that is possible it would be fine if I could copy (and rename) source schema before backup.

3

If the data is smallish, I would just do the pg_dump, restore it to a temporary just-for-this-purpose database server, rename the schema within that temporary server (ALTER SCHEMA...RENAME...), and dump it out of that temporary server to do the final restore.

2

the easiest thing is: dump the stuff. open the dump file in vi. fix, what has to be fixed and replay the stuff.

  • Interesting. That might be the easiest thing to do (thought I would not be able to use binary format for dump). – Nux Oct 29 '14 at 13:26
  • 1
    well, you can: pg_restore transforms a custom format dump into textual format. you can add a pipe and use set to adapt the search_path. it would lead to the desired outcome if i have understood your request correctly. pg_restore ... | sed ... | psql ... – Hans-Jürgen Schönig Oct 29 '14 at 13:31
  • On second thought that is not that easy... I would risk changing something in user data or even column names (if one of them has the same name as the schema). – Nux Oct 29 '14 at 13:46
0

I had to do the same thing, ended up dumping in text format and editing the dump file with a sed command.

Patterns to look for / replace :

CREATE SCHEMA [schema_name]

ALTER SCHEMA [schema_name]

SET search_path = [schema_name]

COMMENT ON SCHEMA [schema_name] IS '[comment]';

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