上下文切换

• To extend the scope of the context switch outside the current database , see
  若要将上下文切换的范围扩展到当前数据库之外，请参阅
• Database and the stored procedure has an execution context switch defined in it
  的存储过程，该存储过程中定义有执行上下文切换。
• The cpu simply becomes overburdened by context switching between threads
  由于要在线程间进行上下文切换，因此cpu简直变成了超载。
• If the new thread is in a different process , there is a context switch too
  如果新线程属于另外的进程，这个操作将引起上下文切换。
• The duration of the context switch is limited to the scope of the query being executed
  时，上下文切换的持续时间限制为执行查询的范围。
• A context switch is a switch in execution between one thread / process and another
  上下文切换是指一个线程/进程在执行中切换到另一个线程/进程中。
• This is true if there is no context switching or if the impersonation is at the server level
  没有上下文切换或在服务器级进行模拟时，将出现这种情况。
• A context switch to a database user does not inherit the server - level permissions of that user
  对数据库用户的上下文切换不会继承该用户的服务器级别权限。
• Internally , a context switch is performed between these two kernels , but this can be done quite fast
  两个内核之间在内部执行上下文切换，但这可以非常快速地完成。
• The braces act as context - switching tokens and switch the query from xml construction to query evaluation
  大括号充当上下文切换标记，并将查询从xml构造切换到查询计算。