Microsoft SQL Server 2008将包含用于合并两个行集(rowset)数据的新句法。根据一个源数据表对另一个数据表进行确定性的插入、更新和删除这样复杂的操作,运用新的MERGE语句,开发者只需使用一条命令就可以完成。 在对两个表进行信息同步时,有三步操作必须要进行。
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BANGALORE, INDIA: In SQL Server 2008, you can perform insert, update, or delete operations in a single statement using the MERGE statement. MERGE statement allows you to join a data source with a ...
REDMOND, Wash. —2010年4月21日 —微软公司今天正式宣布发布Microsoft SQL Server 2008 R2——业界最完整的信息管理、存储和发布平台。在五月上旬,客户将可以通过微软的分销渠道及合作伙伴渠道获得SQL Server 2008 R2。 为庆祝SQL Server的发布,微软将与专业协会合作,在 ...
Comparing cursor vs. WHILE loop performance in SQL Server 2008 Your email has been sent Tim Chapman discusses your iteration choices in SQL Server 2008 and explains why determining which option ...