/usr/share/postgresql/10/extension/citus--5.1-1--5.1-2.sql is in postgresql-10-citus 7.0.3.PGDG-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | CREATE FUNCTION pg_catalog.master_modify_multiple_shards(text)
RETURNS integer
LANGUAGE C STRICT
AS 'MODULE_PATHNAME', $$master_modify_multiple_shards$$;
COMMENT ON FUNCTION master_modify_multiple_shards(text)
IS 'push delete and update queries to shards';
|