SQL Server变量赋值

sql server存储过程中SELECT 与 SET 对变量赋值的区别

SQL Server 中对已经定义的变量赋值的方式用两种，分别是 SET 和 SELECT。对于这两种方式的区别，SQL Server 联机丛书中已经有详细的说明，但很多时候我们并没有注意，其实这两种方式还是有很多差别的。SQL Server推荐使用 SET 而不是 ...

SQL Server 中VARCHAR（MAX）变量赋值引起的性能问题。

原文:SQL Server 中VARCHAR（MAX）变量赋值引起的性能问题。案例环境：操作系统版本：Windows Server 2008 R2 Standard SP1 数据库版本：Microsoft SQL Server 2012(SP1)-11.0.3000.0(X64)案例介绍：由于不能将生产环境的代码和数据贴上来...

SqlServer中存储过程中将Exec的执行结果赋值给变量输出

原文 SqlServer中存储过程中将Exec的执行结果赋值给变量输出背景：遇到这样一种情况：动态向存储过程中传入表名和表的某些属性（这里用到的是主键ID）,然后利用这两个变量查出一条数据的某些字段值，然后再利用这些值进行逻辑运算（自己的...

SQL Server 中VARCHAR（MAX）变量赋值引起的性能问题。

案例环境：操作系统版本：Windows Server 2008 R2 Standard SP1 数据库版本：Microsoft SQL Server 2012(SP1)-11.0.3000.0(X64)案例介绍：由于不能将生产环境的代码和数据贴上来，所以我构造了下面一个小案例，当然没法和生产环境的案例...

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云数据库RDS SQL Server版

云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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SQL Server变量赋值

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