1、為選出的資料加一列固定值

select  ‘kk’ as name from table;

select (case when sex=1 then '男' when sex='2' then '女' end)as sex from table;

where value between 1 and 3

4.將表2的資料拷貝到表1裡面，如果表1有則更新，沒有就插入

merge into 表1 t1 
      using(select id from 表2)t2
      on(t2.id=t1.id)
      when matched then
      update set t1.name=t2.name
      when not matched then
      insert(t1.name)values(t2.name)