Added constraint to avoid orphan nodes

01-paths-indexes.sql

@@ -37,6 +37,7 @@ ALTER TABLE node ADD COLUMN relative_path ltree GENERATED ALWAYS AS (path(parent
 CREATE INDEX file_rel_path_gist_idx ON node USING GIST(relative_path);
 
 ALTER TABLE node ADD CONSTRAINT unique_path UNIQUE (parent_path, name);
+ALTER TABLE node ADD CONSTRAINT fk_parent_path FOREIGN KEY (parent_path) REFERENCES node(path);
 
 -- Create root node
 INSERT INTO node (parent_path, parent_relative_path, name, type, creator_id, is_public) VALUES (NULL, NULL, '', 'container', '0', true);

dump_and_restore/path-indexes.sql

@@ -4,3 +4,5 @@ CREATE UNIQUE INDEX file_path_idx ON node USING btree(path);
 
 ALTER TABLE node ADD COLUMN relative_path ltree GENERATED ALWAYS AS (path(parent_relative_path, node_id)) STORED;
 CREATE INDEX file_rel_path_gist_idx ON node USING GIST(relative_path);
+
+ALTER TABLE node ADD CONSTRAINT fk_parent_path FOREIGN KEY (parent_path) REFERENCES node(path);