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# SQL DELETE 语句 ## DELETE 语句 DELETE 语句用于删除表中的行。 ### 语法 ``` DELETE FROM 表名称 WHERE 列名称 = 值 ``` ## Person: | LastName | FirstName | Address | City | | --- | --- | --- | --- | | Gates | Bill | Xuanwumen 10 | Beijing | | Wilson | Fred | Zhongshan 23 | Nanjing | ## 删除某行 "Fred Wilson" 会被删除: ``` DELETE FROM Person WHERE LastName = 'Wilson' ``` ### 结果: | LastName | FirstName | Address | City | | --- | --- | --- | --- | | Gates | Bill | Xuanwumen 10 | Beijing | ## 删除所有行 可以在不删除表的情况下删除所有的行。这意味着表的结构、属性和索引都是完整的: ``` DELETE FROM table_name ``` 或者: ``` DELETE * FROM table_name ```