我正在阅读微软的文档,特别是异步编程文章,当他解释使用异步代码时服务器线程的工作时,我不理解这一部分。 because it(The server) uses async and await, each of its threads is freed up when the I/O-bound work starts, rather than when it finishes. 谁能帮我解释一下,I/O开始时释放的线程是什么意思? 这篇文章是:https://docs.microsoft.com/en-us/dotnet/standard/async-in-depth
create table xyz ( contrno number , mobile number primary key);
insert into xyz values(1003288127,123457); insert into xyz values(1003288127,123459); insert into xy