SQL语句包含诸多技巧，除基础的增删改查外，还有许多高级用法与优化策略。 1、 我使用的是64位Windows 7系统，因此安装了64位版本的SQL Server 2008R2以确保兼容性和性能。 2、 安装时请注意确认操作系统的位数，32位系统需安装32位版本的SQL Server，版本可选2005或2012 ...

It is a sad fact that many places understand their data and systems less today than ever before. It is a natural outcome as more consultants are used and—whether they are using a consultant or not—far ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Ludi Akue discusses how the tech sector’s ...

Learn how to master the SELECT statement to form truly useful data queries. This article explains functions, clauses, and keywords that will make your life a lot easier. Due to popular demand, we’re ...

Complex queries can be solved with a combination of simpler LINQ queries, anonymous objects and the Group/By/Into clauses. Using Group/By/Into will also give you the best possible performance for ...