Replace source using UPDATE pg_proc about piggly

[kputnam]

Related discussion: https://www.postgresql.org/message-id/AANLkTinEsQxbT_DYBUd9qOgh%2BXJNtqF7y3Hse3qsYX0m%40mail.gmail.com

[xzilla]

In case anyone was thinking of implementing things this way, I'll +1 the idea to use pg_get_functiondef. Note it can be difficult to work with, but something like the following should work:

SELECT pg_get_functiondef(f.oid)||';'                                                               
FROM pg_catalog.pg_proc f                                                                                                   
INNER JOIN pg_catalog.pg_namespace n ON (f.pronamespace = n.oid)
WHERE n.nspname = 'public' and f.proname='film_in_stock';

Note you can adjust or omit the bits of the where clause to get different results back. Hope this helps!