On Mon, Sep 18, 2017 at 10:31:54AM +0200, Dmitry Dolgov wrote: > Just to clarify, do you mean that `CREATE SUBSCRIPTING FOR` would only make > a > dependency record? In this case `DROP SUBSCRIPTING FOR` actually means just > drop an init function.
I think it would be good to add new catalog table. It may be named as pg_type_sbs or pg_subscripting (second is better I think). This table may have the fields: - oid - sbstype - sbsinit - sbsfetch - sbsassign And command 'CREATE SUBSCRIPTING' should add an entry to the pg_subscripting table. It also adds entries to the pg_depend table: dependency between pg_type and pg_subscripting, dependency between pg_type and pg_proc. 'DROP SUBSCRIPTING' should drop this entries, it should not drop init function. According to the Tom's comment the syntax can be modified in the following way: CREATE SUBSCRIPTING FOR type_namei ( INITFUNC = subscripting_init_func FETCHFUNC = subscripting_fetch_func ASSIGNFUNC = subscripting_assign_func ) DROP SUBSCRIPTING FOR type_name -- Arthur Zakirov Postgres Professional: http://www.postgrespro.com Russian Postgres Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
