﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>博客园-欢迎光临赵玉开的技术博客-随笔分类-sql server</title><link>http://www.cnblogs.com/yukaizhao/category/133622.html</link><description>天马行空 无怨无嗔</description><language>zh-cn</language><lastBuildDate>Fri, 30 May 2008 09:42:53 GMT</lastBuildDate><pubDate>Fri, 30 May 2008 09:42:53 GMT</pubDate><ttl>60</ttl><item><title>sql server2005对t-sql的增强之在聚合函数的后面使用over关键字</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/05/27/sql_server_2005_over_avg.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Tue, 27 May 2008 04:38:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/05/27/sql_server_2005_over_avg.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1208290.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/05/27/sql_server_2005_over_avg.html#Feedback</comments><slash:comments>10</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1208290.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1208290.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 本文介绍了sql server2005对t-sql增强的新特性在聚合函数后面使用OVER，代替GROUP BY的写法；这种新的写法比GROUP BY要简短一些，可以省掉一个子查询。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/05/27/sql_server_2005_over_avg.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1208290.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-05-27 12:38 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/05/27/sql_server_2005_over_avg.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>建索引（尤其是主键）时请注意索引列的顺序</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/05/09/create_index_order_by.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Fri, 09 May 2008 05:15:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/05/09/create_index_order_by.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1189818.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/05/09/create_index_order_by.html#Feedback</comments><slash:comments>41</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1189818.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1189818.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 在建主键时ms sql server总是自动在主键上建上聚集索引，并默认设置聚集索引列升序排列；如果我们的常用查询是根据主键列倒叙排列时，这对性能会有一些影响。本文通过实例证明了这种影响，以提示大家注意索引列的排序方式。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/05/09/create_index_order_by.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1189818.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-05-09 13:15 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/05/09/create_index_order_by.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>sql server 中用户定义函数的限制</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/05/08/sql_user_defined_function_limitation.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Thu, 08 May 2008 01:41:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/05/08/sql_user_defined_function_limitation.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1187797.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/05/08/sql_user_defined_function_limitation.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1187797.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1187797.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: sql server用户自定义函数使用上的5点限制。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/05/08/sql_user_defined_function_limitation.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1187797.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-05-08 09:41 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/05/08/sql_user_defined_function_limitation.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Sql Server 分区演练</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/05/07/sql_partition_test.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Wed, 07 May 2008 03:32:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/05/07/sql_partition_test.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1186530.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/05/07/sql_partition_test.html#Feedback</comments><slash:comments>9</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1186530.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1186530.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: sql server 分区简单代码展示。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/05/07/sql_partition_test.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1186530.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-05-07 11:32 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/05/07/sql_partition_test.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Sql Server2005对t-sql的增强之Cross Apply</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/04/30/cross_apply.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Wed, 30 Apr 2008 04:41:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/04/30/cross_apply.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1177554.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/04/30/cross_apply.html#Feedback</comments><slash:comments>2</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1177554.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1177554.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 介绍sql server2005的cross apply语句。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/04/30/cross_apply.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1177554.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-04-30 12:41 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/04/30/cross_apply.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Sql Server2005对t-sql的增强之通用表表达式CTE</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/04/29/cte_sql.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Tue, 29 Apr 2008 10:05:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/04/29/cte_sql.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1176633.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/04/29/cte_sql.html#Feedback</comments><slash:comments>3</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1176633.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1176633.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: Sql Server2005对t-sql的增强之通用表表达式CTE&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/04/29/cte_sql.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1176633.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-04-29 18:05 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/04/29/cte_sql.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Sql Server2005对t-sql的增强之top</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/04/29/sql_top_enhance.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Tue, 29 Apr 2008 01:31:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/04/29/sql_top_enhance.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1175637.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/04/29/sql_top_enhance.html#Feedback</comments><slash:comments>5</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1175637.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1175637.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: sql server 2005对top增强，可以传入参数或者子查询。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/04/29/sql_top_enhance.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1175637.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-04-29 09:31 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/04/29/sql_top_enhance.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>用Clr实现的sql表值函数splitIDs</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/04/28/clr_sql_function.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Mon, 28 Apr 2008 09:08:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/04/28/clr_sql_function.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1174880.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/04/28/clr_sql_function.html#Feedback</comments><slash:comments>12</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1174880.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1174880.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 本文实现了一个拆分字符串的clr的表值函数并将其注册到sql server2005中；然后用t-sql实现了相同功能；最后比较了两种实现的性能。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/04/28/clr_sql_function.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1174880.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-04-28 17:08 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/04/28/clr_sql_function.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Sql Server2005对t-sql的增强之排名函数</title><link>http://www.cnblogs.com/yukaizhao/archive/2008/04/28/sql_server_feature_rank_function.html</link><dc:creator>玉开</dc:creator><author>玉开</author><pubDate>Mon, 28 Apr 2008 00:59:00 GMT</pubDate><guid>http://www.cnblogs.com/yukaizhao/archive/2008/04/28/sql_server_feature_rank_function.html</guid><wfw:comment>http://www.cnblogs.com/yukaizhao/comments/1173889.html</wfw:comment><comments>http://www.cnblogs.com/yukaizhao/archive/2008/04/28/sql_server_feature_rank_function.html#Feedback</comments><slash:comments>14</slash:comments><wfw:commentRss>http://www.cnblogs.com/yukaizhao/comments/commentRss/1173889.html</wfw:commentRss><trackback:ping>http://www.cnblogs.com/yukaizhao/services/trackbacks/1173889.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: Sql Server2005对t-sql的增强之排名函数,介绍NTILE,RANK,DENSE_RANK,ROW_NUMBER函数的使用。&nbsp;&nbsp;<a href='http://www.cnblogs.com/yukaizhao/archive/2008/04/28/sql_server_feature_rank_function.html'>阅读全文</a><img src ="http://www.cnblogs.com/yukaizhao/aggbug/1173889.html?type=1" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://yukaizhao.cnblogs.com/" target="_blank">玉开</a> 2008-04-28 08:59 <a href="http://www.cnblogs.com/yukaizhao/archive/2008/04/28/sql_server_feature_rank_function.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>