考察join /** * 现有T1.T2.T3三个线程,你怎样保证T2在T1执行完成之后执行,T3在T2执行完后执行? * @author user * */ public class Test3 { public static void main(String[] args) throws InterruptedException { Thread T1 = new Thread(new T1()); Thread T2 = new Thread(new T2()); Thread T
SQL> select t1.* from t1,t2 where t1.object_id=t2.object_id; 99 rows selected. Execution Plan ---------------------------------------------------------- Plan hash value: 1506669289 ---------------------------------------------------------------------