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SQLSERVER聚集索引与非聚集索引的再次研究(下)

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Release: 2016-06-07 17:42:44
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SQLSERVER聚集索引与非聚集索引的再次研究(下) 上篇主要说了聚集索引和简单介绍了一下非聚集索引,相信大家一定对聚集索引和非聚集索引开始有一点了解了。 这篇文章只是作为参考,里面的观点不一定正确 上篇的地址:SQLSERVER聚集索引与非聚集索引的再次研

SQLSERVER聚集索引与非聚集索引的再次研究(下)

上篇主要说了聚集索引和简单介绍了一下非聚集索引,相信大家一定对聚集索引和非聚集索引开始有一点了解了。

这篇文章只是作为参考,里面的观点不一定正确

上篇的地址:SQLSERVER聚集索引与非聚集索引的再次研究(上)

下篇主要说非聚集索引

先上非聚集索引的结构图

 先创建Department8表

Department8( , 7 Name NVARCHAR(200) NOT NULL, 8 GroupName NVARCHAR(200) NOT NULL, 9 Company NVARCHAR(300), (getdate()) 11 ) NCL_Name_GroupName .(Name,) Department8 ( name, , groupname ) ((, ((200)) ) .DBCCResult ) . ,虚拟主机,香港服务器,香港服务器租用

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