ALTER TABlE 0_sales_order_details
-DROP COLUMN required_date ,
-DROP COLUMN comment ,
-DROP COLUMN priority ;
+# DROP COLUMN required_date ,
+# DROP COLUMN comment ,
+# DROP COLUMN priority;
+
+DROP TABLE IF EXISTS 0_denorm_order_details_queue;
+DROP TABLE IF EXISTS 0_denorm_qoh;
+DROP VIEW IF EXISTS 0_order_summary_view;