diff --git a/sql/v1.4.0/1.structure.sql b/sql/v1.4.0/1.structure.sql
index e69de29b..0776947d 100644
--- a/sql/v1.4.0/1.structure.sql
+++ b/sql/v1.4.0/1.structure.sql
@@ -0,0 +1,12 @@
+DROP TABLE IF EXISTS `pro_assy_kpsn`;
+DROP TABLE IF EXISTS `pro_issue_part`;
+DROP TABLE IF EXISTS pro_pack_d_data;
+DROP TABLE IF EXISTS pro_pack_m_data;
+DROP TABLE IF EXISTS pro_piece_count;
+DROP TABLE IF EXISTS pro_piece_status;
+DROP TABLE IF EXISTS pro_piece_status_log;
+DROP TABLE IF EXISTS pro_put_in_storage;
+DROP TABLE IF EXISTS pro_report_work;
+DROP TABLE IF EXISTS pro_temp_kpsn;
+DROP TABLE IF EXISTS pro_wo;
+DROP TABLE IF EXISTS pro_wo_sn;