a lot of things

backend/migrations/202503120003_use_version_uuid/down.sql

@@ -0,0 +1,17 @@
+ALTER TABLE documents ADD COLUMN current_version INT4;
+
+UPDATE documents AS d
+SET current_version = dv.version_number
+FROM document_versions AS dv
+WHERE dv.id = d.current_version_id;
+
+ALTER TABLE documents
+    ALTER COLUMN current_version SET NOT NULL;
+
+DROP INDEX IF EXISTS idx_documents_current_version_id;
+
+ALTER TABLE documents
+    DROP CONSTRAINT IF EXISTS documents_current_version_fk;
+
+ALTER TABLE documents
+    DROP COLUMN current_version_id;