Just in case somebody else also needs such a functionality in PostgreSQL < 12, I made a function in plpgsql:
https://github.com/kouber/pg_utils/blob/master/rename_index.sql -- Kouber Saparev
- Is it safe to rename an index through pg_class update? Kouber Saparev
- Re: Is it safe to rename an index through pg_class upd... Tom Lane
- Re: Is it safe to rename an index through pg_class... Kouber Saparev
- Re: Is it safe to rename an index through pg_c... Tom Lane
- pg_upgrade custom table locations. Move ta... Tory M Blue
- Re: pg_upgrade custom table locations... Tory M Blue
- Re: Is it safe to rename an index through pg_class... Andres Freund
- Re: Is it safe to rename an index through pg_c... Kouber Saparev
- Re: Is it safe to rename an index through ... Andres Freund
- Re: Is it safe to rename an index thr... Kouber Saparev
- Re: Is it safe to rename an index... Kouber Saparev
