中关村在线

SQL GROUP BY高级用法解析

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 ...
Ars Technica

SQL: Can you use GROUP BY and treat two values as one?

I have a table of search log results, and one of the columns is the type of search performed. Two of these search types are very similar, and I'd like to treat them as the same search when doing a ...