How do I import modules or install extensions in Postgres 8.4?

Question

I'm trying to import several modules that come bundled with 8.4.1 postgres, and all the commands to do so (such as contrib.import etc) do not work or cannot be found. Please help me.

Answer 1

To install PostgreSQL contrib modules on Ubuntu or Kubuntu (or similar Linux distributions):

1. Install the contrib package: sudo apt-get install postgresql-contrib
2. Restart the database: sudo /etc/init.d/postgresql-8.4 restart
3. Change to the database owner account (e.g., postgres).
4. Change to the contrib modules' directory: /usr/share/postgresql/8.4/contrib/

5. Use ls to see a list of the following modules:

   adminpack               autoinc
   btree_gin               btree_gist
   chkpass                 citext
   cube                    dblink
   dict_int                dict_xsyn
   earthdistance           fuzzystrmatch
   hstore                  insert_username
   int_aggregate           isn
   lo                      ltree
   moddatetime             pageinspect
   pg_buffercache          pgcrypto
   pg_freespacemap         pgrowlocks
   pg_stat_statements      pgstattuple
   pg_trgm                 pgxml
   refint                  seg
   sslinfo                 tablefunc
   test_parser             timetravel
   tsearch2                uuid-ossp
   

6. Load the SQL files using: psql -U user_name -d database_name -f module_name.sql

For example, if your administrative user was named postgres and your database was named storage and the module you wanted was cube, you would type:

psql -U postgres -d storage -f cube.sql

PostgreSQL 9.1:

After step #1 above, do:

1. sudo /etc/init.d/postgresql restart
2. (same as #3 above)
3. cd /usr/share/postgresql/9.1/extension (has extensions)
4. open psql
5. CREATE EXTENSION "uuid-ossp";

Answer 2

1. login as postgres user
2. use create extension to load it

I have a database named 'book' for example,

psql -U postgres book create extension cube

Repeat for each extension required, then \q to logouy