Finish No.7

实验七.md

@@ -69,19 +69,39 @@ FROM
     LEFT JOIN sales s ON s.sale_id = e.emp_no;
 ```
 
-#### 6. 将上述视图中订单号为 10001 的记录的销售总金额改为 6000
+#### 6. 将上述视图中订单号为 11035462019090116054034524 的记录的销售总金额改为 66.5
 ```mysql
-
+SHOW FULL CLOUMNS FROM another_view;
+UPDATE another_view SET 销售金额="66.5" WHERE 订单号="11035462019090116054034524";
 ```
 
 #### 7. 给上述视图添加一条记录数据
 
 ```mysql
-
+INSERT INTO another_view (
+    编码, 姓名, 订单号, 销售金额
+) VALUE (
+    "20002", "马云", "11035462019121200000023834", "1428.57"
+);
+# 但是我们不能直接向视图插入！要向原表插入！
+# 注意约束
+SELECT * FROM another_view;
+INSERT INTO sale_item (
+    order_no, prod_id, qty, unit_price, order_date
+) VALUE (
+    "11035462019121200000023834", "T0001", "1", "56.5", "2019-12-12 00:00:00"
+);
+INSERT INTO sales (
+    order_no, cust_id, sale_id, tot_amt, order_date, ship_date, invoice_no
+) VALUE (
+    "11035462019121200000023834", "100011", "20002", "56.5", "2019-12-12 00:00:00", "2019-12-13 11:45:22", "34600380"
+);
+SELECT * FROM another_view;
 ```
 
 #### 8. 删除上述视图
 
 ```mysql
+DROP VIEW emp_view;
 DROP VIEW another_view;
 ```
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