Since Postgres does not consider a table as a dependency of a function if that table is referenced in the function (probably a good reason), I often find myself in a position of asking "is this table/sequence/index referenced in any of these N number of functions?"
Is there an easy way of essentially grep'ing all of the functions in a given schema for a string?
A method I've used in the past is to create a view of function source which can then be searched.
Eg.
CREATE OR REPLACE VIEW function_def as SELECT n.nspname AS schema_name, p.proname AS function_name, pg_get_function_arguments(p.oid) AS args, pg_get_functiondef(p.oid) AS func_def FROM (SELECT oid, * FROM pg_proc p WHERE NOT p.proisagg) p JOIN pg_catalog.pg_namespace n ON n.oid = p.pronamespace WHERE n.nspname !~~ 'pg_%' AND n.nspname <> 'information_schema';
select * from function_def where func_def ilike '%foo%';