讓我們首先創(chuàng)建一個表-mysql>?create?table?DemoTable

->?(

->?Id?int?NOT?NULL?AUTO_INCREMENT?PRIMARY?KEY,

->?FirstName?varchar(20)

->?);

使用插入命令在表中插入一些記錄-mysql>?insert?into?DemoTable(FirstName)?values('Chris');

mysql>?insert?into?DemoTable(FirstName)?values('Adam');

mysql>?insert?into?DemoTable(FirstName)?values('John');

mysql>?insert?into?DemoTable(FirstName)?values('David');

mysql>?insert?into?DemoTable(FirstName)?values('Mike');

mysql>?insert?into?DemoTable(FirstName)?values('Carol');

mysql>?insert?into?DemoTable(FirstName)?values('Sam');

使用select語句顯示表中的所有記錄-mysql>?select?*from?DemoTable;

這將產生以下輸出-+----+-----------+

|?Id?|?FirstName?|

+----+-----------+

|??1?|?Chris?????|

|??2?|?Adam??????|

|??3?|?John??????|

|??4?|?David?????|

|??5?|?Mike??????|

|??6?|?Carol?????|

|??7?|?Sam???????|

+----+-----------+

7?rows?in?set?(0.00?sec)

這是查詢記錄順序并刪除n行的查詢-mysql>?delete?from?DemoTable?order?by?FirstName?asc?limit?4;

讓我們再次檢查表記錄-mysql>?select?*from?DemoTable;

這將產生以下輸出-+----+-----------+

|?Id?|?FirstName?|

+----+-----------+

|??3?|?John??????|

|??5?|?Mike??????|

|??7?|?Sam???????|

+----+-----------+

3?rows?in?set?(0.00?sec)

總結

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