Make extension-owner as the owner of schema repack,

and grant access to tables, functions in schema repack.

This will ensure that the extension can be installed as trusted extension,
and non-superusers can create and use the extension, without superuser/DBA help.

Author: harinath

lib/pg_repack.sql.in

@@ -380,3 +380,19 @@ LANGUAGE C STABLE STRICT;
 CREATE FUNCTION repack.get_table_and_inheritors(regclass) RETURNS regclass[] AS
 'MODULE_PATHNAME', 'repack_get_table_and_inheritors'
 LANGUAGE C STABLE STRICT;
+
+DO $$
+DECLARE
+    pg_version_num TEXT;
+    major_version INT;
+BEGIN
+    -- Get the pg version
+    SELECT split_part(current_setting('server_version'), '.', 1) INTO pg_version_num;
+    major_version := pg_version_num::INT;
+
+    IF major_version > 12 THEN
+        ALTER SCHEMA repack OWNER TO @extowner@;
+        GRANT ALL PRIVILEGES ON ALL FUNCTIONS IN SCHEMA repack TO @extowner@;
+        GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA repack TO @extowner@;
+    END IF;
+END $$;