日期:2014-05-18 浏览次数:20658 次
-->生成测试数据:
GO
IF OBJECT_ID('TBL')IS NOT NULL
DROP TABLE TBL
GO
CREATE TABLE TBL(
日期 DATE,
备注 VARCHAR(100)
)
GO
INSERT TBL
SELECT '2012-03-02','B' UNION ALL
SELECT '2012-03-05','C' UNION ALL
SELECT '2012-03-06','D' UNION ALL
SELECT '2012-03-07','E' UNION ALL
SELECT '2012-03-09','F' UNION ALL
SELECT '2012-03-11','G' UNION ALL
SELECT '2012-03-12','H' UNION ALL
SELECT '2012-03-13','I' UNION ALL
SELECT '2012-03-15','J' UNION ALL
SELECT '2012-03-19','K' UNION ALL
SELECT '2012-03-20','L'
--不使用union all
;with t
as(
select *,case when 日期>=getdate() then 1 else 0 end as A
from tbl
)
select 日期,备注 from t
order by a,(case when a=1 then 日期 end),
(case when a=0 then 日期 end) desc
/*
日期 备注
2012-03-09 F
2012-03-07 E
2012-03-06 D
2012-03-05 C
2012-03-02 B
2012-03-11 G
2012-03-12 H
2012-03-13 I
2012-03-15 J
2012-03-19 K
2012-03-20 L
*/
估计得用case when 了,这个你看看
------解决方案--------------------
SELECT B.AA_ID,B.BB_ID FROM CC B,( SELECT BB_ID,MIN(AA.CreateDate) AS DT FROM CC,AA WHERE AA.AA_ID =CC.AA_ID GROUP BY CC.BB_ID ) AS T WHERE B.BB_ID=T.BB_ID ORDER BY T.DT,B.BB_ID
------解决方案--------------------
aa1 bb1
aa1 bb2
aa3 bb3
aa3 bb3
aa2 bb4
结果是
aa1 bb1
aa1 bb5
aa2 bb3
aa4 bb3
aa3 bb4
是这样的需求吗
------解决方案--------------------
好像比较简单:
select *
from cc c
left join aa a on a.aa_id=c.aa_id
left join bb b on b.bb_id=c.bb_id
order by a.createdate,b.bb_id