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4 天
SQL索引优化查询技巧
7、 进入查询分析器,选中目标SQL语句,右键点击并选择在数据库引擎优化顾问中分析查询。随后点击左上角的连接按钮,在弹出的登录界面中填写必要的连接参数,确认无误后点击连接以建立会话。
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SQL Server MAX函数用法详解
6、 接下来通过MAX ()函数查询年龄的最大值,输入语句:select MAX (age) as 年龄 from Student,点击执行后即可获取学生中的最大年龄。
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