On Fri, Apr 24, 2026 at 7:48 PM Bertrand Drouvot
<[email protected]> wrote:
>

> > for each of the above functions. This query traverses the dependency
> > tree thus covering every object that can appear in a property graph.
> > For  'create_property_graph_tests.g2' the output of the above query
> > 100 rows long which doesn't seem to be worth the code coverage we get.
> > I guess, we need to choose a property graph with a smaller dependency
> > tree like gt. I haven't examined whether that graph would cover all
> > the cases, but it will certainly cover all the objects.
>
> Yeah, gt is enough to cover all the objects. v3 attached makes use of it and
> 1/ get rid of the "reference_graph" as it's not needed for the test and 2/
> use COLLATE "C" in the order by to be on the safe side of things.

I was thinking of modifying the existing queries as attached.

I think COLLATE "C" is safer, however, it doesn't go well with indexes
in ORDER BY, which make this query easy to write. (see [1]). So far we
haven't seen any buildfarm failures so far with the current ORDER BY.
That makes me think that the query output will be stable even without
COLLATE "C". So keeping it that way. But we can add COLLATE "C" if we
see buildfarm instability.

>
> > I think the proper description of property graph label property object
> > is property graph element label property since we are reporting
> > property of an element through a label. But then that means the
> > description would be inconsistent with the catalog name and adding
> > "element" to the catalog name would make it much longer. I am not able
> > to decide whether to add "element" in the description or not, ATM.
>
> I think it's better to be consistent with the current catalog here to stay
> focused on the main purpose of this patch.
>

Though getObjectTypeDescription() usually prints the description which
is closer to the name of the catalog, that's not always true. E.g
AccessMethodProcedureRelationId maps to "function of access method",
StatisticExtRelationId maps to "statistics object". I think "property
graph element label property" is more appropriate for
PropgraphLabelPropertyRelationId since the property is associated with
the label which in turn is associated with the element. Attached patch
has that change. If Peter feels "property graph label property" is
better, we will use that.

Some more changes as listed below
1. In event_trigger.sql I have modified the names of the tables a bit
so that I can also add an edge element and then test ALTER PROPERTY
GRAPH as well.
2. Used get_catalog_object_by_oid(), which appropriately uses the
cache or table scan in getObjectIdentityParts(). It performs an extra
lookup but I think that's ok, since the latter function is not in a
hot path. I wonder whether get_catalog_object_by_oid() is intended to
be called whenever we want to get the catalog tuple by OID instead of
directly calling sys cache lookup function or catalog scan. At least
the new code you are adding can make use of this function.
3. The cases in getObjectTypeDescription() and
getObjectIdentityParts() are arranged roughly in alphabetical order,
but not exactly. I took some liberty to rearrange the property graph
related cases such that the cases directly dependent on property graph
appear first in the alphabetical order followed by those dependent
through one hop and then those through two hops. That way the code
appears in the order of their dependency and is easy to read. Also
arranged the new entries in objectaddress.sql to follow that order as
per a comment in that file. The way you had arranged it appeared in
alphabetical order if we considered RelationId to be part of the name
not otherwise.
4. getObjectIdentityParts() should be closer to getObjectDescription()
when creating the array of object names and also the identity. For
example getObjectIdentityParts() constructs identity of the property
as "a of create_property_graph_tests.gt" losing the name of the label
whereas getObjectDescription() constructs it as property "a of label
v1 of vertex v1 of property graph gt". Fixed that as well.

[1] 
https://www.postgresql.org/message-id/[email protected]

-- 
Best Wishes,
Ashutosh Bapat
From 144c8575ba8c6386e6a738dab7b6c77568598b39 Mon Sep 17 00:00:00 2001
From: Bertrand Drouvot <[email protected]>
Date: Thu, 23 Apr 2026 09:27:39 +0000
Subject: [PATCH v20260429 4/4] Handle element label and element label property
 objects in object address functions

getObjectTypeDescription() and getObjectIdentityParts() do not handle objects in
pg_propgraph_element_label and pg_propgraph_label_property catalogs. These
functions when called for handling a DDL that affects these objects causes
"unsupported object class" error. An error is reported when these functions are
called when pg_identify_object() and pg_identify_object_as_address() are invoked
with objects from the said catalogs.

The objects in these catalogs do not have a (user given) name but they can be
manipulated invdividually through ALTER PROPERTY GRAPH sub-commands. Hence they
need to be accessible to the event triggers. Handle these catalogs in the
respective functions.

Reported-by: Bertrand Drouvot <[email protected]>
Author: Bertrand Drouvot <[email protected]>
Author: Ashutosh Bapat <[email protected]>
Reviewed-by: Michael Paquier <[email protected]>
Reviewed-by: Ashutosh Bapat <[email protected]>
Discussion: https://postgr.es/m/aej1DkLwhyZWmtxJ@bdtpg
---
 src/backend/catalog/objectaddress.c           |  83 ++++++++
 .../expected/create_property_graph.out        | 198 ++++++++++--------
 src/test/regress/expected/event_trigger.out   |  22 ++
 src/test/regress/expected/object_address.out  |   9 +-
 .../regress/sql/create_property_graph.sql     |  31 ++-
 src/test/regress/sql/event_trigger.sql        |  15 ++
 src/test/regress/sql/object_address.sql       |   5 +-
 7 files changed, 267 insertions(+), 96 deletions(-)

diff --git a/src/backend/catalog/objectaddress.c b/src/backend/catalog/objectaddress.c
index c1862809577..7451c5b16b2 100644
--- a/src/backend/catalog/objectaddress.c
+++ b/src/backend/catalog/objectaddress.c
@@ -4913,6 +4913,14 @@ getObjectTypeDescription(const ObjectAddress *object, bool missing_ok)
 			appendStringInfoString(&buffer, "property graph property");
 			break;
 
+		case PropgraphElementLabelRelationId:
+			appendStringInfoString(&buffer, "property graph element label");
+			break;
+
+		case PropgraphLabelPropertyRelationId:
+			appendStringInfoString(&buffer, "property graph element label property");
+			break;
+
 		case PublicationRelationId:
 			appendStringInfoString(&buffer, "publication");
 			break;
@@ -6228,6 +6236,81 @@ getObjectIdentityParts(const ObjectAddress *object,
 				break;
 			}
 
+		case PropgraphElementLabelRelationId:
+			{
+				Relation	ellabelDesc;
+				HeapTuple	tup;
+				Form_pg_propgraph_element_label pgelform;
+				ObjectAddress oa;
+				char	   *labelname;
+
+				ellabelDesc = table_open(PropgraphElementLabelRelationId, AccessShareLock);
+				tup = get_catalog_object_by_oid(ellabelDesc,
+												Anum_pg_propgraph_element_label_oid,
+												object->objectId);
+				if (!HeapTupleIsValid(tup))
+				{
+					if (!missing_ok)
+						elog(ERROR, "could not find tuple for element label %u",
+							 object->objectId);
+
+					table_close(ellabelDesc, AccessShareLock);
+					break;
+				}
+
+				pgelform = (Form_pg_propgraph_element_label) GETSTRUCT(tup);
+
+				labelname = get_propgraph_label_name(pgelform->pgellabelid);
+				appendStringInfo(&buffer, _("%s of "), quote_identifier(labelname));
+				ObjectAddressSet(oa, PropgraphElementRelationId, pgelform->pgelelid);
+				appendStringInfoString(&buffer, getObjectIdentityParts(&oa, objname,
+																	   objargs, false));
+				/* labelname is already pstrdup'ed. */
+				if (objname)
+					*objname = lappend(*objname, labelname);
+
+				table_close(ellabelDesc, AccessShareLock);
+				break;
+			}
+
+		case PropgraphLabelPropertyRelationId:
+			{
+				Relation	lblpropDesc;
+				HeapTuple	tup;
+				Form_pg_propgraph_label_property plpform;
+				ObjectAddress oa;
+				char	   *propname;
+
+				lblpropDesc = table_open(PropgraphLabelPropertyRelationId,
+										 AccessShareLock);
+				tup = get_catalog_object_by_oid(lblpropDesc,
+												Anum_pg_propgraph_label_property_oid,
+												object->objectId);
+				if (!HeapTupleIsValid(tup))
+				{
+					if (!missing_ok)
+						elog(ERROR, "could not find tuple for label property %u",
+							 object->objectId);
+
+					table_close(lblpropDesc, AccessShareLock);
+					break;
+				}
+
+				plpform = (Form_pg_propgraph_label_property) GETSTRUCT(tup);
+
+				propname = get_propgraph_property_name(plpform->plppropid);
+				appendStringInfo(&buffer, _("%s of "), quote_identifier(propname));
+				ObjectAddressSet(oa, PropgraphElementLabelRelationId, plpform->plpellabelid);
+				appendStringInfoString(&buffer, getObjectIdentityParts(&oa, objname,
+																	   objargs, false));
+				/* propname is already pstrdup'ed. */
+				if (objname)
+					*objname = lappend(*objname, propname);
+
+				table_close(lblpropDesc, AccessShareLock);
+				break;
+			}
+
 		case PublicationRelationId:
 			{
 				char	   *pubname;
diff --git a/src/test/regress/expected/create_property_graph.out b/src/test/regress/expected/create_property_graph.out
index 7c3f25a3e0d..d3c2758257f 100644
--- a/src/test/regress/expected/create_property_graph.out
+++ b/src/test/regress/expected/create_property_graph.out
@@ -669,96 +669,128 @@ SELECT * FROM information_schema.pg_property_graph_privileges WHERE grantee LIKE
 (2 rows)
 
 -- test object address functions
+CREATE TEMPORARY VIEW deps_tree AS
+    WITH RECURSIVE deps (classid, objid, objsubid, refclassid, refobjid, refobjsubid) AS (
+        SELECT classid, objid, objsubid,
+               refclassid, refobjid, refobjsubid
+        FROM pg_depend
+        WHERE refclassid = 'pg_class'::regclass AND
+              refobjid = 'create_property_graph_tests.gt'::regclass AND
+        -- eliminate this view, which is not a real dependency, from the result
+              classid <> 'pg_rewrite'::regclass
+        UNION ALL
+        SELECT d.classid, d.objid, d.objsubid,
+               d.refclassid, d.refobjid, d.refobjsubid
+        FROM pg_depend d
+        JOIN deps dp ON d.refclassid = dp.classid AND d.refobjid = dp.objid AND d.refobjsubid = dp.objsubid
+    ) SELECT DISTINCT * FROM deps;
 SELECT pg_describe_object(classid, objid, objsubid) as obj,
-       pg_describe_object(refclassid, refobjid, refobjsubid) as reference_graph
-    FROM pg_depend
-    WHERE refclassid = 'pg_class'::regclass AND
-          refobjid = 'create_property_graph_tests.g2'::regclass
-    ORDER BY 1, 2;
-               obj               |  reference_graph  
----------------------------------+-------------------
- edge e1 of property graph g2    | property graph g2
- edge e2 of property graph g2    | property graph g2
- label e1 of property graph g2   | property graph g2
- label e2 of property graph g2   | property graph g2
- label t1 of property graph g2   | property graph g2
- label t2 of property graph g2   | property graph g2
- label t3l1 of property graph g2 | property graph g2
- label t3l2 of property graph g2 | property graph g2
- property a of property graph g2 | property graph g2
- property b of property graph g2 | property graph g2
- property i of property graph g2 | property graph g2
- property j of property graph g2 | property graph g2
- property k of property graph g2 | property graph g2
- property t of property graph g2 | property graph g2
- property x of property graph g2 | property graph g2
- property y of property graph g2 | property graph g2
- property z of property graph g2 | property graph g2
- type g2                         | property graph g2
- vertex t1 of property graph g2  | property graph g2
- vertex t2 of property graph g2  | property graph g2
- vertex t3 of property graph g2  | property graph g2
-(21 rows)
+       pg_describe_object(refclassid, refobjid, refobjsubid) as refobj
+    FROM deps_tree ORDER BY 1, 2;
+                           obj                            |                   refobj                   
+----------------------------------------------------------+--------------------------------------------
+ edge e of property graph gt                              | property graph gt
+ edge e of property graph gt                              | vertex v1 of property graph gt
+ edge e of property graph gt                              | vertex v2 of property graph gt
+ label e of edge e of property graph gt                   | edge e of property graph gt
+ label e of edge e of property graph gt                   | label e of property graph gt
+ label e of property graph gt                             | property graph gt
+ label v1 of property graph gt                            | property graph gt
+ label v1 of vertex v1 of property graph gt               | label v1 of property graph gt
+ label v1 of vertex v1 of property graph gt               | vertex v1 of property graph gt
+ label v2 of property graph gt                            | property graph gt
+ label v2 of vertex v2 of property graph gt               | label v2 of property graph gt
+ label v2 of vertex v2 of property graph gt               | vertex v2 of property graph gt
+ property a of label v1 of vertex v1 of property graph gt | label v1 of vertex v1 of property graph gt
+ property a of label v1 of vertex v1 of property graph gt | property a of property graph gt
+ property a of property graph gt                          | property graph gt
+ property b of label v1 of vertex v1 of property graph gt | label v1 of vertex v1 of property graph gt
+ property b of label v1 of vertex v1 of property graph gt | property b of property graph gt
+ property b of property graph gt                          | property graph gt
+ property c of label e of edge e of property graph gt     | label e of edge e of property graph gt
+ property c of label e of edge e of property graph gt     | property c of property graph gt
+ property c of property graph gt                          | property graph gt
+ property k1 of label e of edge e of property graph gt    | label e of edge e of property graph gt
+ property k1 of label e of edge e of property graph gt    | property k1 of property graph gt
+ property k1 of property graph gt                         | property graph gt
+ property k2 of label e of edge e of property graph gt    | label e of edge e of property graph gt
+ property k2 of label e of edge e of property graph gt    | property k2 of property graph gt
+ property k2 of property graph gt                         | property graph gt
+ property m of label v2 of vertex v2 of property graph gt | label v2 of vertex v2 of property graph gt
+ property m of label v2 of vertex v2 of property graph gt | property m of property graph gt
+ property m of property graph gt                          | property graph gt
+ property n of label v2 of vertex v2 of property graph gt | label v2 of vertex v2 of property graph gt
+ property n of label v2 of vertex v2 of property graph gt | property n of property graph gt
+ property n of property graph gt                          | property graph gt
+ type gt                                                  | property graph gt
+ type gt[]                                                | type gt
+ vertex v1 of property graph gt                           | property graph gt
+ vertex v2 of property graph gt                           | property graph gt
+(37 rows)
 
 SELECT (pg_identify_object_as_address(classid, objid, objsubid)).*
-    FROM pg_depend
-    WHERE refclassid = 'pg_class'::regclass AND
-          refobjid = 'create_property_graph_tests.g2'::regclass
+    FROM (SELECT DISTINCT classid, objid, objsubid FROM deps_tree)
     ORDER BY 1, 2, 3;
-          type           |             object_names              | object_args 
--------------------------+---------------------------------------+-------------
- property graph element  | {create_property_graph_tests,g2,e1}   | {}
- property graph element  | {create_property_graph_tests,g2,e2}   | {}
- property graph element  | {create_property_graph_tests,g2,t1}   | {}
- property graph element  | {create_property_graph_tests,g2,t2}   | {}
- property graph element  | {create_property_graph_tests,g2,t3}   | {}
- property graph label    | {create_property_graph_tests,g2,e1}   | {}
- property graph label    | {create_property_graph_tests,g2,e2}   | {}
- property graph label    | {create_property_graph_tests,g2,t1}   | {}
- property graph label    | {create_property_graph_tests,g2,t2}   | {}
- property graph label    | {create_property_graph_tests,g2,t3l1} | {}
- property graph label    | {create_property_graph_tests,g2,t3l2} | {}
- property graph property | {create_property_graph_tests,g2,a}    | {}
- property graph property | {create_property_graph_tests,g2,b}    | {}
- property graph property | {create_property_graph_tests,g2,i}    | {}
- property graph property | {create_property_graph_tests,g2,j}    | {}
- property graph property | {create_property_graph_tests,g2,k}    | {}
- property graph property | {create_property_graph_tests,g2,t}    | {}
- property graph property | {create_property_graph_tests,g2,x}    | {}
- property graph property | {create_property_graph_tests,g2,y}    | {}
- property graph property | {create_property_graph_tests,g2,z}    | {}
- type                    | {create_property_graph_tests.g2}      | {}
-(21 rows)
+                 type                  |               object_names               | object_args 
+---------------------------------------+------------------------------------------+-------------
+ property graph element                | {create_property_graph_tests,gt,e}       | {}
+ property graph element                | {create_property_graph_tests,gt,v1}      | {}
+ property graph element                | {create_property_graph_tests,gt,v2}      | {}
+ property graph element label          | {create_property_graph_tests,gt,e,e}     | {}
+ property graph element label          | {create_property_graph_tests,gt,v1,v1}   | {}
+ property graph element label          | {create_property_graph_tests,gt,v2,v2}   | {}
+ property graph element label property | {create_property_graph_tests,gt,e,e,c}   | {}
+ property graph element label property | {create_property_graph_tests,gt,e,e,k1}  | {}
+ property graph element label property | {create_property_graph_tests,gt,e,e,k2}  | {}
+ property graph element label property | {create_property_graph_tests,gt,v1,v1,a} | {}
+ property graph element label property | {create_property_graph_tests,gt,v1,v1,b} | {}
+ property graph element label property | {create_property_graph_tests,gt,v2,v2,m} | {}
+ property graph element label property | {create_property_graph_tests,gt,v2,v2,n} | {}
+ property graph label                  | {create_property_graph_tests,gt,e}       | {}
+ property graph label                  | {create_property_graph_tests,gt,v1}      | {}
+ property graph label                  | {create_property_graph_tests,gt,v2}      | {}
+ property graph property               | {create_property_graph_tests,gt,a}       | {}
+ property graph property               | {create_property_graph_tests,gt,b}       | {}
+ property graph property               | {create_property_graph_tests,gt,c}       | {}
+ property graph property               | {create_property_graph_tests,gt,k1}      | {}
+ property graph property               | {create_property_graph_tests,gt,k2}      | {}
+ property graph property               | {create_property_graph_tests,gt,m}       | {}
+ property graph property               | {create_property_graph_tests,gt,n}       | {}
+ type                                  | {create_property_graph_tests.gt}         | {}
+ type                                  | {create_property_graph_tests.gt[]}       | {}
+(25 rows)
 
 SELECT (pg_identify_object(classid, objid, objsubid)).*
-    FROM pg_depend
-    WHERE refclassid = 'pg_class'::regclass AND
-          refobjid = 'create_property_graph_tests.g2'::regclass
+    FROM (SELECT DISTINCT classid, objid, objsubid FROM deps_tree)
     ORDER BY 1, 2, 3, 4;
-          type           |           schema            | name |                identity                
--------------------------+-----------------------------+------+----------------------------------------
- property graph element  |                             |      | e1 of create_property_graph_tests.g2
- property graph element  |                             |      | e2 of create_property_graph_tests.g2
- property graph element  |                             |      | t1 of create_property_graph_tests.g2
- property graph element  |                             |      | t2 of create_property_graph_tests.g2
- property graph element  |                             |      | t3 of create_property_graph_tests.g2
- property graph label    |                             |      | e1 of create_property_graph_tests.g2
- property graph label    |                             |      | e2 of create_property_graph_tests.g2
- property graph label    |                             |      | t1 of create_property_graph_tests.g2
- property graph label    |                             |      | t2 of create_property_graph_tests.g2
- property graph label    |                             |      | t3l1 of create_property_graph_tests.g2
- property graph label    |                             |      | t3l2 of create_property_graph_tests.g2
- property graph property |                             |      | a of create_property_graph_tests.g2
- property graph property |                             |      | b of create_property_graph_tests.g2
- property graph property |                             |      | i of create_property_graph_tests.g2
- property graph property |                             |      | j of create_property_graph_tests.g2
- property graph property |                             |      | k of create_property_graph_tests.g2
- property graph property |                             |      | t of create_property_graph_tests.g2
- property graph property |                             |      | x of create_property_graph_tests.g2
- property graph property |                             |      | y of create_property_graph_tests.g2
- property graph property |                             |      | z of create_property_graph_tests.g2
- type                    | create_property_graph_tests | g2   | create_property_graph_tests.g2
-(21 rows)
+                 type                  |           schema            | name |                    identity                     
+---------------------------------------+-----------------------------+------+-------------------------------------------------
+ property graph element                |                             |      | e of create_property_graph_tests.gt
+ property graph element                |                             |      | v1 of create_property_graph_tests.gt
+ property graph element                |                             |      | v2 of create_property_graph_tests.gt
+ property graph element label          |                             |      | e of e of create_property_graph_tests.gt
+ property graph element label          |                             |      | v1 of v1 of create_property_graph_tests.gt
+ property graph element label          |                             |      | v2 of v2 of create_property_graph_tests.gt
+ property graph element label property |                             |      | a of v1 of v1 of create_property_graph_tests.gt
+ property graph element label property |                             |      | b of v1 of v1 of create_property_graph_tests.gt
+ property graph element label property |                             |      | c of e of e of create_property_graph_tests.gt
+ property graph element label property |                             |      | k1 of e of e of create_property_graph_tests.gt
+ property graph element label property |                             |      | k2 of e of e of create_property_graph_tests.gt
+ property graph element label property |                             |      | m of v2 of v2 of create_property_graph_tests.gt
+ property graph element label property |                             |      | n of v2 of v2 of create_property_graph_tests.gt
+ property graph label                  |                             |      | e of create_property_graph_tests.gt
+ property graph label                  |                             |      | v1 of create_property_graph_tests.gt
+ property graph label                  |                             |      | v2 of create_property_graph_tests.gt
+ property graph property               |                             |      | a of create_property_graph_tests.gt
+ property graph property               |                             |      | b of create_property_graph_tests.gt
+ property graph property               |                             |      | c of create_property_graph_tests.gt
+ property graph property               |                             |      | k1 of create_property_graph_tests.gt
+ property graph property               |                             |      | k2 of create_property_graph_tests.gt
+ property graph property               |                             |      | m of create_property_graph_tests.gt
+ property graph property               |                             |      | n of create_property_graph_tests.gt
+ type                                  | create_property_graph_tests | _gt  | create_property_graph_tests.gt[]
+ type                                  | create_property_graph_tests | gt   | create_property_graph_tests.gt
+(25 rows)
 
 \a\t
 SELECT pg_get_propgraphdef('g2'::regclass);
diff --git a/src/test/regress/expected/event_trigger.out b/src/test/regress/expected/event_trigger.out
index 065f586310f..86ae50ce531 100644
--- a/src/test/regress/expected/event_trigger.out
+++ b/src/test/regress/expected/event_trigger.out
@@ -173,6 +173,28 @@ NOTICE:  test_event_trigger: ddl_command_end CREATE USER MAPPING
 alter default privileges for role regress_evt_user
  revoke delete on tables from regress_evt_user;
 NOTICE:  test_event_trigger: ddl_command_end ALTER DEFAULT PRIVILEGES
+-- DROP PROPERTY GRAPH should work with event trigger in place
+CREATE TABLE tv1 (a int PRIMARY KEY, b text);
+NOTICE:  test_event_trigger: ddl_command_start CREATE TABLE
+NOTICE:  test_event_trigger: ddl_command_end CREATE TABLE
+CREATE TABLE tv2 (i int PRIMARY KEY, j text);
+NOTICE:  test_event_trigger: ddl_command_start CREATE TABLE
+NOTICE:  test_event_trigger: ddl_command_end CREATE TABLE
+CREATE TABLE te1 (p int PRIMARY KEY, a int REFERENCES tv1(a), b int REFERENCES tv2(i), q text);
+NOTICE:  test_event_trigger: ddl_command_start CREATE TABLE
+NOTICE:  test_event_trigger: ddl_command_end CREATE TABLE
+CREATE PROPERTY GRAPH gx
+	VERTEX TABLES (
+		tv1 LABEL l1 PROPERTIES (b AS p1),
+		tv2 LABEL l2 PROPERTIES (j AS p1))
+  EDGE TABLES (te1 SOURCE tv1 DESTINATION tv2 LABEL e1 PROPERTIES (q as p1));
+NOTICE:  test_event_trigger: ddl_command_end CREATE PROPERTY GRAPH
+ALTER PROPERTY GRAPH gx ALTER EDGE TABLE te1 ALTER LABEL e1 DROP PROPERTIES (p1);
+NOTICE:  test_event_trigger: ddl_command_end ALTER PROPERTY GRAPH
+DROP PROPERTY GRAPH gx;
+NOTICE:  test_event_trigger: ddl_command_end DROP PROPERTY GRAPH
+DROP TABLE tv1, tv2, te1;
+NOTICE:  test_event_trigger: ddl_command_end DROP TABLE
 -- alter owner to non-superuser should fail
 alter event trigger regress_event_trigger owner to regress_evt_user;
 ERROR:  permission denied to change owner of event trigger "regress_event_trigger"
diff --git a/src/test/regress/expected/object_address.out b/src/test/regress/expected/object_address.out
index 97227d67a54..9f2d08398b0 100644
--- a/src/test/regress/expected/object_address.out
+++ b/src/test/regress/expected/object_address.out
@@ -67,7 +67,8 @@ DECLARE
 BEGIN
     FOR objtype IN VALUES ('toast table'), ('index column'), ('sequence column'),
         ('toast table column'), ('view column'), ('materialized view column'),
-        ('property graph element'), ('property graph label'), ('property graph property')
+        ('property graph element'), ('property graph label'), ('property graph property'),
+        ('property graph element label'), ('property graph element label property')
     LOOP
         BEGIN
             PERFORM pg_get_object_address(objtype, '{one}', '{}');
@@ -86,6 +87,8 @@ WARNING:  error for materialized view column: unsupported object type "materiali
 WARNING:  error for property graph element: unsupported object type "property graph element"
 WARNING:  error for property graph label: unsupported object type "property graph label"
 WARNING:  error for property graph property: unsupported object type "property graph property"
+WARNING:  error for property graph element label: unrecognized object type "property graph element label"
+WARNING:  error for property graph element label property: unrecognized object type "property graph element label property"
 -- miscellaneous other errors
 select * from pg_get_object_address('operator of access method', '{btree,integer_ops,1}', '{int4,bool}');
 ERROR:  operator 1 (int4, bool) of operator family integer_ops for access method btree does not exist
@@ -595,6 +598,8 @@ WITH objects (classid, objid, objsubid) AS (VALUES
     ('pg_propgraph_element'::regclass, 0, 0), -- no property graph element
     ('pg_propgraph_label'::regclass, 0, 0), -- no property graph label
     ('pg_propgraph_property'::regclass, 0, 0), -- no property graph property
+    ('pg_propgraph_element_label'::regclass, 0, 0), -- no property graph element label
+    ('pg_propgraph_label_property'::regclass, 0, 0), -- no property graph label property
     ('pg_publication'::regclass, 0, 0), -- no publication
     ('pg_publication_namespace'::regclass, 0, 0), -- no publication namespace
     ('pg_publication_rel'::regclass, 0, 0), -- no publication relation
@@ -653,6 +658,8 @@ ORDER BY objects.classid, objects.objid, objects.objsubid;
 ("(""parameter ACL"",,,)")|("(""parameter ACL"",,)")|NULL
 ("(""property graph element"",,,)")|("(""property graph element"",,)")|NULL
 ("(""property graph label"",,,)")|("(""property graph label"",,)")|NULL
+("(""property graph element label"",,,)")|("(""property graph element label"",,)")|NULL
 ("(""property graph property"",,,)")|("(""property graph property"",,)")|NULL
+("(""property graph element label property"",,,)")|("(""property graph element label property"",,)")|NULL
 -- restore normal output mode
 \a\t
diff --git a/src/test/regress/sql/create_property_graph.sql b/src/test/regress/sql/create_property_graph.sql
index 191412a6a33..e8b3b3ff94c 100644
--- a/src/test/regress/sql/create_property_graph.sql
+++ b/src/test/regress/sql/create_property_graph.sql
@@ -286,21 +286,30 @@ SELECT * FROM information_schema.pg_property_data_types ORDER BY property_graph_
 SELECT * FROM information_schema.pg_property_graph_privileges WHERE grantee LIKE 'regress%' ORDER BY property_graph_name, grantor, grantee, privilege_type;
 
 -- test object address functions
+CREATE TEMPORARY VIEW deps_tree AS
+    WITH RECURSIVE deps (classid, objid, objsubid, refclassid, refobjid, refobjsubid) AS (
+        SELECT classid, objid, objsubid,
+               refclassid, refobjid, refobjsubid
+        FROM pg_depend
+        WHERE refclassid = 'pg_class'::regclass AND
+              refobjid = 'create_property_graph_tests.gt'::regclass AND
+        -- eliminate this view, which is not a real dependency, from the result
+              classid <> 'pg_rewrite'::regclass
+        UNION ALL
+        SELECT d.classid, d.objid, d.objsubid,
+               d.refclassid, d.refobjid, d.refobjsubid
+        FROM pg_depend d
+        JOIN deps dp ON d.refclassid = dp.classid AND d.refobjid = dp.objid AND d.refobjsubid = dp.objsubid
+    ) SELECT DISTINCT * FROM deps;
+
 SELECT pg_describe_object(classid, objid, objsubid) as obj,
-       pg_describe_object(refclassid, refobjid, refobjsubid) as reference_graph
-    FROM pg_depend
-    WHERE refclassid = 'pg_class'::regclass AND
-          refobjid = 'create_property_graph_tests.g2'::regclass
-    ORDER BY 1, 2;
+       pg_describe_object(refclassid, refobjid, refobjsubid) as refobj
+    FROM deps_tree ORDER BY 1, 2;
 SELECT (pg_identify_object_as_address(classid, objid, objsubid)).*
-    FROM pg_depend
-    WHERE refclassid = 'pg_class'::regclass AND
-          refobjid = 'create_property_graph_tests.g2'::regclass
+    FROM (SELECT DISTINCT classid, objid, objsubid FROM deps_tree)
     ORDER BY 1, 2, 3;
 SELECT (pg_identify_object(classid, objid, objsubid)).*
-    FROM pg_depend
-    WHERE refclassid = 'pg_class'::regclass AND
-          refobjid = 'create_property_graph_tests.g2'::regclass
+    FROM (SELECT DISTINCT classid, objid, objsubid FROM deps_tree)
     ORDER BY 1, 2, 3, 4;
 
 \a\t
diff --git a/src/test/regress/sql/event_trigger.sql b/src/test/regress/sql/event_trigger.sql
index 32e9bb58c5e..d0e6ba295fe 100644
--- a/src/test/regress/sql/event_trigger.sql
+++ b/src/test/regress/sql/event_trigger.sql
@@ -143,6 +143,21 @@ create user mapping for regress_evt_user server useless_server;
 alter default privileges for role regress_evt_user
  revoke delete on tables from regress_evt_user;
 
+-- DROP PROPERTY GRAPH should work with event trigger in place
+CREATE TABLE tv1 (a int PRIMARY KEY, b text);
+CREATE TABLE tv2 (i int PRIMARY KEY, j text);
+CREATE TABLE te1 (p int PRIMARY KEY, a int REFERENCES tv1(a), b int REFERENCES tv2(i), q text);
+
+CREATE PROPERTY GRAPH gx
+	VERTEX TABLES (
+		tv1 LABEL l1 PROPERTIES (b AS p1),
+		tv2 LABEL l2 PROPERTIES (j AS p1))
+  EDGE TABLES (te1 SOURCE tv1 DESTINATION tv2 LABEL e1 PROPERTIES (q as p1));
+
+ALTER PROPERTY GRAPH gx ALTER EDGE TABLE te1 ALTER LABEL e1 DROP PROPERTIES (p1);
+DROP PROPERTY GRAPH gx;
+DROP TABLE tv1, tv2, te1;
+
 -- alter owner to non-superuser should fail
 alter event trigger regress_event_trigger owner to regress_evt_user;
 
diff --git a/src/test/regress/sql/object_address.sql b/src/test/regress/sql/object_address.sql
index 1bbe9457c1c..e987bd3542f 100644
--- a/src/test/regress/sql/object_address.sql
+++ b/src/test/regress/sql/object_address.sql
@@ -67,7 +67,8 @@ DECLARE
 BEGIN
     FOR objtype IN VALUES ('toast table'), ('index column'), ('sequence column'),
         ('toast table column'), ('view column'), ('materialized view column'),
-        ('property graph element'), ('property graph label'), ('property graph property')
+        ('property graph element'), ('property graph label'), ('property graph property'),
+        ('property graph element label'), ('property graph element label property')
     LOOP
         BEGIN
             PERFORM pg_get_object_address(objtype, '{one}', '{}');
@@ -284,6 +285,8 @@ WITH objects (classid, objid, objsubid) AS (VALUES
     ('pg_propgraph_element'::regclass, 0, 0), -- no property graph element
     ('pg_propgraph_label'::regclass, 0, 0), -- no property graph label
     ('pg_propgraph_property'::regclass, 0, 0), -- no property graph property
+    ('pg_propgraph_element_label'::regclass, 0, 0), -- no property graph element label
+    ('pg_propgraph_label_property'::regclass, 0, 0), -- no property graph label property
     ('pg_publication'::regclass, 0, 0), -- no publication
     ('pg_publication_namespace'::regclass, 0, 0), -- no publication namespace
     ('pg_publication_rel'::regclass, 0, 0), -- no publication relation
-- 
2.34.1

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