Create Function with LANGUAGE c gets ERROR: permission denied for language c

Question

We are migrating a database from PostgresSQL single server to flexible server using psql to dump and restore.
All those functions with 'language c' would return ERROR: permission denied for language c

A sample function like this:
CREATE OR REPLACE FUNCTION public.unaccent_lexize(internal, internal, internal, internal)
RETURNS internal
LANGUAGE c
PARALLEL SAFE AS '$libdir/unaccent', $function$unaccent_lexize$function$;

We tried to enable language c support but seems the admin account we created does not have the authority to do so.

Any help would be appreciated.

Answer

To create functions in the C language, superuser access is required. Additionally, it is strongly advised against updating catalog tables directly. As you do not have superuser access, you were prevented from potentially causing significant issues.

If you do not possess superuser privileges (which is preferable, considering your recent attempts), you'll need to request your DBA to execute these statements on your behalf.

https://stackoverflow.com/questions/77046116/how-to-overcome-the-error-permission-denied-for-language-c

https://stackoverflow.com/questions/7014437/error-permission-denied-for-language-c

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Create Function with LANGUAGE c gets ERROR: permission denied for language c

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