diff --git a/duckdb b/duckdb
index 0c82f0e..c380346 160000
--- a/duckdb
+++ b/duckdb
@@ -1 +1 @@
-Subproject commit 0c82f0ed582ed2737216539845028826badb4bda
+Subproject commit c380346433db588352999594227f2f8d23be2f49
diff --git a/test/sql/create_pg/create_if_not_exists.test b/test/sql/create_pg/create_if_not_exists.test
new file mode 100644
index 0000000..199dae7
--- /dev/null
+++ b/test/sql/create_pg/create_if_not_exists.test
@@ -0,0 +1,68 @@
+
+
+require duckpgq
+
+statement ok
+CREATE TABLE Student(id BIGINT, name VARCHAR);
+
+statement ok
+CREATE TABLE know(src BIGINT, dst BIGINT, createDate BIGINT);
+
+statement ok
+CREATE TABLE School(school_name VARCHAR, school_id BIGINT, school_kind BIGINT);
+
+statement ok
+INSERT INTO Student VALUES (0, 'Daniel'), (1, 'Tavneet'), (2, 'Gabor'), (3, 'Peter');
+
+statement ok
+INSERT INTO know VALUES (0,1, 10), (0,2, 11), (0,3, 12), (1,2, 14), (1,3, 15), (2,3, 16);
+
+statement ok
+-CREATE PROPERTY GRAPH IF NOT EXISTS pg_all_properties
+VERTEX TABLES (
+    Student,
+    School  LABEL School IN School_kind (Hogeschool, University)
+    )
+EDGE TABLES (
+    know    SOURCE KEY ( src ) REFERENCES Student ( id )
+            DESTINATION KEY ( dst ) REFERENCES Student ( id )
+            LABEL Knows
+    )
+
+query I
+select count(*) from __duckpgq_internal where is_vertex_table;
+----
+2
+
+statement ok
+-CREATE PROPERTY GRAPH IF NOT EXISTS pg_all_properties
+VERTEX TABLES (
+    Student
+    )
+EDGE TABLES (
+    know    SOURCE KEY ( src ) REFERENCES Student ( id )
+            DESTINATION KEY ( dst ) REFERENCES Student ( id )
+            LABEL Knows
+    )
+
+query I
+select count(*) from __duckpgq_internal where is_vertex_table;
+----
+2
+
+statement ok
+-CREATE PROPERTY GRAPH IF NOT EXISTS snb
+VERTEX TABLES (
+    Student
+    )
+EDGE TABLES (
+    know    SOURCE KEY ( src ) REFERENCES Student ( id )
+            DESTINATION KEY ( dst ) REFERENCES Student ( id )
+            LABEL Knows
+    )
+
+query I
+select distinct property_graph from __duckpgq_internal order by property_graph desc;
+----
+snb
+pg_all_properties