Comprehensive case of MySQL data addition, deletion, modification and query

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Comprehensive cases of data addition, deletion, modification and query

1、 Create database test01_library

2、 Create table books, The table structure is as follows ：

3、 towards books Insert records in the table

4、 Type the novel (novel) The prices of all the books have increased 5.

5、 Name as EmmaT Change the price of your book to 40, And change the description to drama.

6、 Delete inventory as 0 The record of .

7、 Included in the title of the statistical book a A Book of letters

8、 Included in the title of the statistical book a The number of alphabetic books and the total stock

9、 find “novel” Type of book , In descending order of price

10、 Search for book information , In descending order of inventory , If the inventory is the same, follow note Ascending order

11、 according to note Number of classified statistical books

12、 according to note Inventory of classified statistics , Show that the inventory exceeds 30 Ben's

13、 Search all books , Each page shows 3 Ben , Show second page

14、 according to note Inventory of classified statistics , Displays the most in stock

15、 Query the title of the book to 10 A one character book , Not including the space inside

16、 Check the title and type of the book , among note The value is novel Show novel ,law Show legal ,medicine Show medicine ,cartoon Show cartoon ,joke Show jokes

17、 Check the title of the book 、 stock , among num Value exceeds 30 Ben's , Show unsalable , Greater than 0 And below 10 Of , Show best sellers , by 0 The display needs to be out of stock

18、 Count each note The stock of , And total

19、 Count each note The number of , And total

20、 Count the top three books in stock

21、 Find the first book published

22、 find novel The most expensive book in

23、 Find the book with the most words in the title , No spaces

Comprehensive cases of data addition, deletion, modification and query

1、 Create database test01_library

2、 Create table books, The table structure is as follows ：

3、 towards books Insert records in the table

         1） Do not specify field name , Insert the first record       

       

         2） Specify all field names , Insert second record

        3） Insert multiple records at the same time （ All the remaining records ）

4、 Type the novel (novel) The prices of all the books have increased 5.

5、 Name as EmmaT Change the price of your book to 40, And change the description to drama.

6、 Delete inventory as 0 The record of .

7、 Included in the title of the statistical book a A Book of letters

8、 Included in the title of the statistical book a The number of alphabetic books and the total stock

9、 find “novel” Type of book , In descending order of price

10、 Search for book information , In descending order of inventory , If the inventory is the same, follow note Ascending order

11、 according to note Number of classified statistical books

12、 according to note Inventory of classified statistics , Show that the inventory exceeds 30 Ben's

13、 Search all books , Each page shows 3 Ben , Show second page

14、 according to note Inventory of classified statistics , Displays the most in stock

15、 Query the title of the book to 9 A one character book , Not including the space inside

16、 Check the title and type of the book , among note The value is novel Show novel ,law Show legal ,medicine Show medicine ,cartoon Show cartoon ,joke Show jokes

 

17、 Check the title of the book 、 stock , among num Value exceeds 30 Ben's , Show unsalable , Greater than 0 And below 10 Of , Show best sellers , by 0 The display needs to be out of stock

 

18、 Count each note The stock of , And total

 

19、 Count each note The number of , And total

 

20、 Count the top three books in stock

 

21、 Find the first book published

 

22、 find novel The most expensive book in

 

23、 Find the book with the most words in the title , No spaces