How to get list of all objects? - PostgreSQL

Question

Hi folks,

I need a list of the objects included in the db: tables, sequences, etc...

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Getting the list of tables was the only thing I was able to find out.

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Any ideas for what I could use in order to obtain everything?

Answer 1

You can do this using INFORMATION_SCHEMA tables, as well as the system catalog.

http://www.alberton.info/postgresql_meta_info.html

E.g.,

List Sequences

SELECT relname
FROM pg_class
WHERE relkind = 'S'
AND relnamespace IN (
    SELECT oid
    FROM pg_namespace
    WHERE nspname NOT LIKE 'pg_%'
    AND nspname != 'information_schema'
);

List Triggers

SELECT trg.tgname AS trigger_name
  FROM pg_trigger trg, pg_class tbl
 WHERE trg.tgrelid = tbl.oid
   AND tbl.relname !~ '^pg_';
-- or
SELECT tgname AS trigger_name
  FROM pg_trigger
 WHERE tgname !~ '^pg_';

-- with INFORMATION_SCHEMA:

SELECT DISTINCT trigger_name
  FROM information_schema.triggers
 WHERE trigger_schema NOT IN
       ('pg_catalog', 'information_schema');