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SQL数据库高级教程:学习 SQL ORDER BY 语句_[SQL Server教程]

Writer: 归海一刀 Article type: Programming skills(编程技巧) Time: 2014/2/3 6:40:23 Browse times: 394 Comment times: 0

SQL数据库高级教程:学习 SQL ORDER BY 语句_[SQL Server教程]


Sega3412ABC Shop5678W3Schools2312W3Schools6798

实例

以字母顺序显示公司名称:

SELECT Company, OrderNumber FROM OrdersORDER BY Company

结果:

ABC Shop 5678Sega3412W3Schools6798W3Schools2312

实例

以字母顺序显示公司名称(Company),并以数字顺序显示顺序号(OrderNumber):

ELECT Company, OrderNumber FROM OrdersORDER BY Company, OrderNumber

结果:

ABC Shop5678Sega3412W3Schools2312W3Schools6798

实例

以逆字母顺序显示公司名称:

SELECT Company, OrderNumber FROM OrdersORDER BY Company DESC

结果:

W3Schools6798W3Schools2312Sega3412ABC Shop5678

实例

以逆字母顺序显示公司名称,并以数字顺序显示顺序号:

SELECT Company, OrderNumber FROM OrdersORDER BY Company DESC, OrderNumber ASC

结果:

W3Schools2312W3Schools6798Sega3412ABC Shop5678

注意:在以上的结果中有两个相等的公司名称(W3School)。只有这一次,在第一列中有相同的值时,第二列是以升序排列的。如果第一列中有些值为nulls时,情况也是这样的。




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SQL数据库高级教程:学习 SQL ORDER BY 语句_[SQL Server教程]

ORDER BY关键词用于对结果进行排序。

对行进行分类

ORDER BY子语句用于对行进行排序。

Orders:

CompanyOrderNumberCompanyOrderNumberCompanyOrderNumberCompanyOrderNumberCompanyOrderNumber

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