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SQL DELETE 語句

DELETE 語句

DELETE 語句用于刪除表中的行。

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(jié)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(jié)構(gòu)、屬性和索引都是完整的:

DELETE FROM table_name

或者:

DELETE * FROM table_name