小编Nil*_*rai的帖子

我有1列的表,并有以下数据

Status
a1
i
t
a2
a3

我想在我的选择查询中显示以下结果

Status| STATUSTEXT
a1    | Active
i     | Inactive
t     | Terminated
a2    | Active
a3    | Active

我能想到的一种方法是在select查询中使用Switch When表达式

SELECT
status,
CASE status 
WHEN 'a1' THEN 'Active'
WHEN 'a2' THEN 'Active'
WHEN 'a3' THEN 'Active'
WHEN 'i' THEN 'Inactive'
WHEN 't' THEN 'Terminated'
END AS StatusText
FROM stage.tst

有没有其他方法可以做到这一点,我不需要写入当表达3次活动状态,并且可以在一个表达式中检查整个活动状态？

我试图使用线程在Java中实现Bully算法.
这是我写的代码.

package newbully;

public class NewBully {

    public static void main(String[] args) {
        int total_processes = 4;
        Thread1[] t = new Thread1[total_processes];
        for (int i = 0; i < total_processes; i++) {
            t[i] = new Thread1(new Process(i+1, i+1), total_processes);
        }
        try {
            Election.initialElection(t);
        } catch (Exception e) {
            System.out.println("Possibly you are using null references in array");
        }
        for (int i = 0; i < total_processes; i++) {
            new Thread(t[i]).start();
        }
    }
}

package newbully;

public class Election {

    private …