-- get list of functions
SELECT  proname as fname, prosrc, pg_get_functiondef(p.oid)
FROM    pg_catalog.pg_namespace n
JOIN    pg_catalog.pg_proc p ON pronamespace = n.oid
WHERE   nspname = 'accounting'
OR nspname = 'dbo'
OR nspname = 'permission'
OR nspname = 'printforms'
OR nspname = 'public'
AND proname <> 'last_agg';

-- get definition only
--SELECT pg_get_functiondef(oid) AS definition, proname FROM pg_proc WHERE proname = 'hstore';