再求高手指点下这个SQL怎么写请给具体SQL啊谢谢
col1 col2 col3
2012-01-01 1000 0001
2012-01-01 2222 0004
2012-01-01 3000 0001
2012-01-02 1000 0002
2012-01-02 2222 0004
2012-01-02 3000 0003
2012-01-03 1000 0002
2012-01-03 2222 0004
2012-01-03 3000 0004
2012-01-04 2222 0004
2012-01-04 3000 0003
2012-01-05 2222 0004
2012-01-05 3000 0003
其中col1是日期 col3是随便的数据 col1,col2,col3为联合主键
现在要查询col2在一个时间段内连续出现的数据如上的数据查询1到5号数据则结果为
col2
2222
3000
[解决办法]
[SYS@myoracle] SQL>with t1 as(
2 select date'2012-01-01' col1, 1000 col2, '0001' col3 from dual union all
3 select date'2012-01-01' col1, 2222 col2, '0004' col3 from dual union all
4 select date'2012-01-01' col1, 3000 col2, '0001' col3 from dual union all
5 select date'2012-01-02' col1, 1000 col2, '0002' col3 from dual union all
6 select date'2012-01-02' col1, 2222 col2, '0004' col3 from dual union all
7 select date'2012-01-02' col1, 3000 col2, '0003' col3 from dual union all
8 select date'2012-01-03' col1, 1000 col2, '0002' col3 from dual union all
9 select date'2012-01-03' col1, 2222 col2, '0004' col3 from dual union all
10 select date'2012-01-03' col1, 3000 col2, '0004' col3 from dual union all
11 select date'2012-01-04' col1, 2222 col2, '0004' col3 from dual union all
12 select date'2012-01-04' col1, 3000 col2, '0003' col3 from dual union all
13 select date'2012-01-05' col1, 2222 col2, '0004' col3 from dual union all
14 select date'2012-01-05' col1, 3000 col2, '0003' col3 from dual
15 )select col2
16 from (select row_number()over(partition by col2 order by col1) row_,
17 col1,col2,col3
18 from t1
19 where col1 between date'2012-01-01' and date'2012-01-05'
--这个where条件是你需要根据你自己的需要改动的地方
20 )
21 group by col2,col1-row_
22 having count(1) = date'2012-01-05'-date'2012-01-01' + 1
--这个条件也是你需要根据你自己的需要改动的地方
、
23 order by col2;
COL2
----------
2222
3000
[SYS@myoracle] SQL>
with t as(
select date'2012-01-01' col1, 1000 col2, '0001' col3 from dual union all
select date'2012-01-01' col1, 2222 col2, '0004' col3 from dual union all
select date'2012-01-01' col1, 3000 col2, '0001' col3 from dual union all
select date'2012-01-02' col1, 1000 col2, '0002' col3 from dual union all
select date'2012-01-02' col1, 2222 col2, '0004' col3 from dual union all
select date'2012-01-02' col1, 3000 col2, '0003' col3 from dual union all
select date'2012-01-03' col1, 1000 col2, '0002' col3 from dual union all
select date'2012-01-03' col1, 2222 col2, '0004' col3 from dual union all
select date'2012-01-03' col1, 3000 col2, '0004' col3 from dual union all
select date'2012-01-04' col1, 2222 col2, '0004' col3 from dual union all
select date'2012-01-04' col1, 3000 col2, '0003' col3 from dual union all
select date'2012-01-05' col1, 2222 col2, '0004' col3 from dual union all
select date'2012-01-05' col1, 3000 col2, '0003' col3 from dual
)
SELECT col2 FROM
(
SELECT (SELECT Count(DISTINCT col1) FROM t WHERE col1 between date'2012-01-01' and date'2012-01-05' )ncol1,
Count(col2)ncol2,
col2
FROM
(
SELECT DISTINCT col1,col2 FROM t WHERE col1 between date'2012-01-01' and date'2012-01-05'
)GROUP BY col2
)WHERE ncol1=ncol2
