After the code in the statement is executed , any pinned variables are unpinned and subject to garbage collection .
执行完语句中的代码后，任何固定变量都被解除固定并受垃圾回收的制约。
Warning : pinning tables should be carefully considered . If a pinned table is larger , or grows larger , than the available data cache , the server may need to be restarted and the table unpinned .
