Jim Nasby wrote: > Is there anything that will translate an object identity (as returned by > pg_event_trigger_ddl_commands) into class/object/subobject OIDs? If I had > that, I could use it to track objects by OID (like pg_depend does), as well > as storing the text representation. That way I can have an event trigger > that updates the stored pg_describe_object() text any time an object was > renamed. Without that, I don't see any good way to find the original name of > a renamed object (so that I can update my reference to it).
> BTW, why were pg_get_object_address and pg_identify_object_as_address added > instead of creating a function that accepted the output of > pg_identify_object()? Is there a reason that wouldn't work? I suppose it's because your use case is different than the one I was trying to satisfy, so we have different ideas on what is necessary. > ISTM it would be useful to add address_names and address_args to > pg_event_trigger_ddl_commands(), as well as adding some way to get the > original information for an object when an ALTER is being done. In > particular, if something (such as a column) is being renamed. Yeah, this info is available in the pg_ddl_command object, but you need to write some C code to get to it, as the structs are specific to each possible command. I suppose we could have written another function such as the one with have for drops (pg_event_trigger_dropped_objects). As far as I can tell we don't have any commands that rename more than one object at a time, so it would be simpler, but I don't know how likely that is to change. -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
