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2207/MySQL数据库操作综合练习题答案.md

@@ -88,6 +88,8 @@ WHERE death IS NOT NULL;
 TRUNCATE pet;
 ```
 
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 ### 练习三
 
 ![image-20250315225417117](https://yp.smallkun.cn/markdown/image-20250315225417117.png!compress)
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 ![image-20250315225441802](https://yp.smallkun.cn/markdown/image-20250315225441802.png!compress)
 
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 ### 练习四
 
 ![image-20250315225803115](https://yp.smallkun.cn/markdown/image-20250315225803115.png!compress)
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 ```sql
 ```
 
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 ### 练习五
 
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 ```sql
 ```
 
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 ### 练习六
 
 ![image-20250315230057816](https://yp.smallkun.cn/markdown/image-20250315230057816.png!compress)
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 ```sql
 ```
 
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 ### 练习七
 
 ![image-20250315230113710](https://yp.smallkun.cn/markdown/image-20250315230113710.png!compress)
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 ```sql
 ```
 
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 ### 练习八
 
 ![image-20250315230214156](https://yp.smallkun.cn/markdown/image-20250315230214156.png!compress)