使用ORDER BYIF()可以按特定順序排列數據。以下是語法-select?*from?yourTableName?ORDER?BY?IF(yourColumnName=yourValue1?OR

yourColumnName=yourValue2?OR?yourColumnName=yourValue3,yourColumnName,

~yourColumnName)?ASC;

讓我們首先創建一個表-mysql>?create?table?arrangeDataInSpecificOrder

->?(

->?StudentId?int,

->?StudentName?varchar(20)

->?);

以下是使用insert命令在表中插入一些記錄的查詢-mysql>?insert?into?arrangeDataInSpecificOrder?values(10,'Larry');

mysql>?insert?into?arrangeDataInSpecificOrder?values(15,'Mike');

mysql>?insert?into?arrangeDataInSpecificOrder?values(100,'Sam');

mysql>?insert?into?arrangeDataInSpecificOrder?values(70,'Carol');

mysql>?insert?into?arrangeDataInSpecificOrder?values(90,'Bob');

mysql>?insert?into?arrangeDataInSpecificOrder?values(300,'David');

以下是使用select語句顯示表中所有記錄的查詢-mysql>?select?*?from?arrangeDataInSpecificOrder;

這將產生以下輸出-+-----------+-------------+

|?StudentId?|?StudentName?|

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

|?10????????|?Larry???????|

|?15????????|?Mike????????|

|?100???????|?Sam?????????|

|?70????????|?Carol???????|

|?90????????|?Bob?????????|

|?300???????|?David???????|

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

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

這是按特定順序排列數據的查詢-mysql>?select?*?from?arrangeDataInSpecificOrder?ORDER?BY?IF(StudentId=300?OR

StudentId=100?OR?StudentId=10,StudentId,?~StudentId)?ASC;

這將產生以下輸出-+-----------+-------------+

|?StudentId?|?StudentName?|

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

|?10????????|?Larry???????|

|?100???????|?Sam?????????|

|?300???????|?David???????|

|?90????????|?Bob?????????|

|?70????????|?Carol???????|

|?15????????|?Mike????????|

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

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

總結

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