表a
id title addtime
1 aaa 2007-02-23
2 bbb 2007-06-05
表b
id title addtime
1 assf 2007-03-23
2 dfsd 2007-05-05
现在想把连个表合并显示按时间倒序排列,输出结果为:
addtime title
2007-06-05 bbb
2007-05-05 dfsd
2007-03-23 assf
2007-02-23 aaa
------解决方案--------------------
select addtime,title from (
select addtime,title from a
union all
select addtime,title from b ) as c
order by addtime desc
------解决方案--------------------
select addtime,title from a
union all
select addtime,title from b order by addtime desc
------解决方案--------------------
select addtime,title from (select * from a union all select * from b)t
order by addtime desc
------解决方案--------------------
select addtime , title from a
union all
select addtime , title from a
order by a.addtime desc
------解决方案--------------------
- SQL code
create table a(id int,title varchar(10),addtime datetime)insert into a values(1, 'aaa', '2007-02-23') insert into a values(2, 'bbb', '2007-06-05')create table b(id int,title varchar(10),addtime datetime)insert into a values(1, 'assf', '2007-03-23')insert into a values(2, 'dfsd', '2007-05-05')goselect addtime , title from a union all select addtime , title from border by a.addtime descdrop table a,b/*addtime title ------------------------------------------------------ ---------- 2007-06-05 00:00:00.000 bbb2007-05-05 00:00:00.000 dfsd2007-03-23 00:00:00.000 assf2007-02-23 00:00:00.000 aaa（所影响的行数为 4 行）*/
------解决方案--------------------
- SQL code
select addtime,title from a union all select addtime,title from b order by addtime desc
------解决方案--------------------
使用 union
------解决方案--------------------
SQL codeselect addtime,title from a
union all
select addtime,title from b order by addtime desc