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SQL初学者教程:学会使用SQL UPDATE语句_[SQL Server教程]

Writer: 归海一刀 Article type: Programming skills(编程技巧) Time: 2014/2/3 6:39:25 Browse times: 411 Comment times: 0

SQL初学者教程:学会使用SQL UPDATE语句_[SQL Server教程]


NilsenFredKirkegt 56StavangerRasmussen Storgt 67

更新某一行中的一个列

我们为last name是"Rasmussen"的人添加first name:

UPDATE Person SET FirstName = 'Nina'WHERE LastName = 'Rasmussen' 

结果:

NilsenFredKirkegt 56StavangerRasmussenNinaStorgt 67

更新某一行中的若干列

我们会修改地址(address),并添加城市名称(name of the city):

UPDATE PersonSET Address = 'Stien 12', City = 'Stavanger'WHERE LastName = 'Rasmussen'

结果:

NilsenFredKirkegt 56StavangerRasmussenNinaStien 12Stavanger



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SQL初学者教程:学会使用SQL UPDATE语句_[SQL Server教程]

Update 语句

Update 语句用于修改表中的数据。

语法:

UPDATE table_nameSET column_name = new_valueWHERE column_name = some_value

Person:

LastNameFirstNameAddressCityLastNameFirstNameAddressCityLastNameFirstNameAddressCity

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