How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?

user_219 0
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I want to be able to connect to a PostgreSQL database and find all of the functions for a particular schema.

My thought was that I could make some query to pg_catalog or information_schema and get a list of all functions, but I can't figure out where the names and parameters are stored. I'm looking for a query that will give me the function name and the parameter types it takes (and what order it takes them in).

Is there a way to do this?

postgresql function
9 Answers

Get List of function_schema and function_name...

SELECT
    n.nspname AS function_schema,
    p.proname AS function_name
FROM
    pg_proc p
    LEFT JOIN pg_namespace n ON p.pronamespace = n.oid
WHERE
    n.nspname NOT IN ('pg_catalog', 'information_schema')
ORDER BY
    function_schema,
    function_name;
user_120734340

This function returns all user defined routines in current database.

SELECT pg_get_functiondef(p.oid) FROM pg_proc p
INNER JOIN pg_namespace ns ON p.pronamespace = ns.oid
WHERE ns.nspname = 'public';
user_32569740
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