diff --git a/src/main/resources/schemas/schema_v2.4.sql b/src/main/resources/schemas/schema_v2.4.sql
index 63f405c0b..91324e3c3 100644
--- a/src/main/resources/schemas/schema_v2.4.sql
+++ b/src/main/resources/schemas/schema_v2.4.sql
@@ -3145,16 +3145,16 @@ CALL Pro_Temp_ColumnWork('pur_contract', 'pageType',
 
 
 CALL Pro_Temp_ColumnWork('device_info', 'purApplyBillNo',
-                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs NOT NULL COMMENT''申购订单单据号''',
+                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs  COMMENT''申购订单单据号''',
                          1);
 CALL Pro_Temp_ColumnWork('device_info', 'purOrderBillNo',
-                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs NOT NULL COMMENT''采购订单单据号''',
+                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs  COMMENT''采购订单单据号''',
                          1);
 CALL Pro_Temp_ColumnWork('device_info', 'purContractBillNo',
-                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs NOT NULL COMMENT''采购合同单据号''',
+                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs  COMMENT''采购合同单据号''',
                          1);
 CALL Pro_Temp_ColumnWork('device_info', 'purPlanBillNo',
-                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs NOT NULL COMMENT''采购计划单据号''',
+                         'varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_cs  COMMENT''采购计划单据号''',
                          1);
 CALL Pro_Temp_ColumnWork('basic_bussiness_type', 'devInType',
                          ' int   NOT NULL DEFAULT b''0'' COMMENT ''是否设备入库 ：0：未启用；2.启用''', 1);