On 17/06/18 10:05, Benjie Gillam wrote: > Greetings! > > How can I tell, using the system catalog or information schema, if a > function/procedure was created by an extension as opposed to by the user > (i.e. would be dropped if you performed "DROP EXTENSION")? So far I've > looked at the `pg_extension` table, which lists the class IDs of > configuration tables but doesn't mention procedures. I've looked at > `pg_proc` but that doesn't seem to contain the information. I've also > scanned over various other system catalogues but with no luck. Is this > information available in one of the system catalogs? Does PostgreSQL > itself track this information so that it can perform cleanup, or does it > expect the extension to clean up after itself? All dependencies are tracked in the system catalog pg_depend. If you do \set ECHO_HIDDEN on in psql and then \dx+ an_extension you can see what queries psql uses to get the information. That should put you well on your way to doing what you want. -- Vik Fearing +33 6 46 75 15 36 http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
