SQL 語句 DELETE 刪除行案列介紹

 

DELETE 語句

DELETE 語句用於刪除表中的行。

語法

DELETE FROM 表名稱 WHERE 列名稱 = 值

Person:

LastName FirstName Address City Gates Bill Xuanwumen 10 Beijing Wilson Fred Zhongshan 23 Nanjing

刪除某行

"Fred Wilson" 會被刪除：

DELETE FROM Person WHERE LastName = 'Wilson' 

結果:

LastName FirstName Address City Gates Bill Xuanwumen 10 Beijing

刪除所有行

可以在不刪除表的情況下刪除所有的行。這意味著表的結構、屬性和索引都是完整的：

DELETE FROM table_name

或者：

DELETE * FROM table_name