我需要获取一个没有重复记录值的列表。请查看查询列表以获取详细信息。
从原始表中查询第一个列表，第二个列表是添加两个函数的中间结果，第三个列表是期望结果。
请帮助获得第三个列表结果，任何机构都可以提供帮助，将非常感谢。
顺便说一下，硬件需要在最终结果中保留plsh.plsh_id，因此不能在第二个列表中使用distinct。 current_smc_value和previous_smc_value需要继续保持。
原始数据如下：
select plsh.plsh_id,
plsh.patr_id,
plsh.smc CURRENT_SMC,
plsh.create_date CURRENT_SMC_DATE
from pat_liver_smc_his plsh
where plsh.patr_id = 34461
order by plsh.plsh_id desc;
，结果是
PLSH_ID PATR_ID CURRENT_SMC CURRENT_SMC_DATE
1 10020 34461 22 2/19/2013 1:23:58 PM
2 10019 34461 22 2/19/2013 1:22:57 PM
3 10018 34461 27 2/19/2013 1:22:42 PM
4 10017 34461 27 2/19/2013 1:22:42 PM
5 10016 34461 27 2/19/2013 1:22:32 PM
6 10015 34461 27 2/19/2013 1:22:32 PM
7 10014 34461 27 2/19/2013 1:22:20 PM
8 10013 34461 27 2/19/2013 1:22:20 PM
9 10012 34461 27 2/19/2013 1:22:09 PM
10 10011 34461 27 2/19/2013 1:21:50 PM
11 10010 34461 24 2/19/2013 1:21:36 PM
12 10009 34461 22 2/19/2013 1:21:06 PM
13 10008 34461 2/19/2013 1:21:06 PM
需求需要获取previous_smc，previous_smc_date和trunc date，因此我创建了以下查询语句和两个函数。
select plsh.plsh_id,
plsh.patr_id,
tttt_gen_pkg.get_previous_SMC(plsh.patr_id, plsh.plsh_id) PREVIOUS_SMC,
trunc(tttt_gen_pkg.get_previous_SMC_Date(plsh.patr_id, plsh.plsh_id)) PREVIOUS_SMC_DATE,
plsh.smc CURRENT_SMC,
trunc(plsh.create_date) CURRENT_SMC_DATE
from pat_liver_smc_his plsh
where plsh.patr_id = 34461
order by plsh.plsh_id desc;
function get_previous_SMC(p_patr_id varchar2, p_plsh_id varchar2)
return number is
cursor c_smc is
select plsh.smc
from pat_liver_smc_his plsh
where plsh.patr_id = p_patr_id
and plsh.plsh_id < p_plsh_id
order by plsh.plsh_id desc;
v_rst number;
begin
open c_smc;
fetch c_smc
into v_rst;
close c_smc;
return v_rst;
end;
function get_previous_SMC_Date(p_patr_id varchar2, p_plsh_id varchar2)
return date is
cursor c_smc is
select plsh.create_date
from pat_liver_smc_his plsh
where plsh.patr_id = p_patr_id
and plsh.plsh_id < p_plsh_id
order by plsh.plsh_id desc;
v_rst date;
begin
open c_smc;
fetch c_smc
into v_rst;
close c_smc;
return v_rst;
end;
，结果是
PLSH_ID PATR_ID PREVIOUS_SMC PREVIOUS_SMC_DATE CURRENT_SMC CURRENT_SMC_DATE
1 10020 34461 22 2/19/2013 22 2/19/2013
2 10019 34461 27 2/19/2013 22 2/19/2013
3 10018 34461 27 2/19/2013 27 2/19/2013
4 10017 34461 27 2/19/2013 27 2/19/2013
5 10016 34461 27 2/19/2013 27 2/19/2013
6 10015 34461 27 2/19/2013 27 2/19/2013
7 10014 34461 27 2/19/2013 27 2/19/2013
8 10013 34461 27 2/19/2013 27 2/19/2013
9 10012 34461 27 2/19/2013 27 2/19/2013
10 10011 34461 24 2/19/2013 27 2/19/2013
11 10010 34461 22 2/19/2013 24 2/19/2013
12 10009 34461 2/19/2013 22 2/19/2013
13 10008 34461 2/19/2013
预计最终结果如下：如何获得？最终结果中需要PLSH_ID，因此上述查询语句的区别不起作用。
PLSH_ID PATR_ID PREVIOUS_SMC PREVIOUS_SMC_DATE CURRENT_SMC CURRENT_SMC_DATE
1 10020 34461 22 2/19/2013 22 2/19/2013
2 10019 34461 27 2/19/2013 22 2/19/2013
3 10018 34461 27 2/19/2013 27 2/19/2013
10 10011 34461 24 2/19/2013 27 2/19/2013
11 10010 34461 22 2/19/2013 24 2/19/2013
12 10009 34461 2/19/2013 22 2/19/2013
13 10008 34461 2/19/2013
Hi Egor,
Thank you very much for your effort. After a little bit modify your code I got below result,
it seems current_smc and current_smc_date order is correct but the previous_smc and previous_smc_date still not correct,
the result is like below:
PLSH_ID PATR_ID PREVIOUS_SMC PREVIOUS_SMC_DATE CURRENT_SMC CURRENT_SMC_DATE
1 10020 34461 22 2/19/2013
2 10019 34461 22 2/19/2013 22 2/19/2013
3 10018 34461 22 2/19/2013 27 2/19/2013
4 10017 34461 27 2/19/2013 27 2/19/2013
5 10010 34461 27 2/19/2013 24 2/19/2013
6 10009 34461 24 2/19/2013 22 2/19/2013
7 10008 34461 22 2/19/2013 2/19/2013
A little bit modify of your code is like below:
select plsh_id,
patr_id,
PREVIOUS_SMC,
PREVIOUS_SMC_DATE,
CURRENT_SMC,
CURRENT_SMC_DATE
from (select plsh_id,
patr_id,
CURRENT_SMC,
CURRENT_SMC_DATE,
PREVIOUS_SMC,
PREVIOUS_SMC_DATE,
case
when decode(CURRENT_SMC,
lag(CURRENT_SMC) over(partition by t1.patr_id
order by t1.plsh_id desc),
1) = 1 and decode(CURRENT_SMC_DATE,
lag(CURRENT_SMC_DATE)
over(partition by t1.patr_id
order by t1.plsh_id desc),
1) = 1 and
decode(PREVIOUS_SMC,
lag(PREVIOUS_SMC)
over(partition by t1.patr_id order by
t1.plsh_id desc),
1) = 1 and
decode(CURRENT_SMC,
lag(CURRENT_SMC) over(partition by t1.patr_id
order by t1.plsh_id desc),
1) = 1 then
1
end as the_same
from (select plsh.plsh_id,
plsh.patr_id,
trunc(plsh.smc) CURRENT_SMC,
trunc(plsh.create_date) CURRENT_SMC_DATE,
lead(trunc(plsh.smc)) over(partition by plsh.patr_id order by plsh.plsh_id) PREVIOUS_SMC,
lead(trunc(plsh.create_date)) over(partition by plsh.patr_id order by plsh.plsh_id) PREVIOUS_SMC_DATE
from pat_liver_smc_his plsh
where plsh.patr_id = 34461) t1)
where the_same is null
order by patr_id, plsh_id desc;
Can you please help me to correct it? Some of you code I don't understand because you are more senior level than me. Thanks again!!!
最终的完美作品来自DazzaL。修改后的工作代码如下：
select plsh_id,
patr_id,
previous_smc,
previous_smc_date,
current_smc,
current_smc_date
from (select plsh_id,
patr_id,
previous_smc,
previous_smc_date,
current_smc,
current_smc_date,
row_number() over(partition by patr_id, current_smc, previous_smc order by plsh_id desc) rn
from (select plsh_id,
patr_id,
plsh.smc current_smc,
plsh.create_date current_smc_date,
lag(plsh.smc) over(partition by patr_id order by plsh_id) previous_smc,
lag(plsh.create_date) over(partition by patr_id order by plsh_id) previous_smc_date
from pat_liver_smc_his plsh))
where rn = 1 and patr_id = 34461
order by patr_id, plsh_id desc
答案 0 :(得分：1)
select plsh_id,
patr_id,
CURRENT_SMC,
CURRENT_SMC_DATE,
PREVIOUS_SMC,
PREVIOUS_SMC_DATE
from (
select plsh_id,
patr_id,
CURRENT_SMC,
CURRENT_SMC_DATE,
PREVIOUS_SMC,
PREVIOUS_SMC_DATE,
case when
decode(CURRENT_SMC, lag(CURRENT_SMC) over (partition by plsh.patr_id order by plsh.plsh_id desc), 1) = 1
and
decode(CURRENT_SMC_DATE, lag(CURRENT_SMC_DATE) over (partition by plsh.patr_id order by plsh.plsh_id desc), 1) = 1
and
decode(PREVIOUS_SMC, lag(PREVIOUS_SMC) over (partition by plsh.patr_id order by plsh.plsh_id desc), 1) = 1
and
decode(CURRENT_SMC, lag(CURRENT_SMC) over (partition by plsh.patr_id order by plsh.plsh_id desc), 1) = 1
then 1
end as the_same
from (
select
plsh.plsh_id,
plsh.patr_id,
trunc(plsh.smc) CURRENT_SMC,
trunc(plsh.create_date) CURRENT_SMC_DATE,
lead(trunc(plsh.smc)) over (partition by plsh.patr_id order by plsh.plsh_id) PREVIOUS_SMC,
lead(trunc(plsh.create_date)) over (partition by plsh.patr_id order by plsh.plsh_id) PREVIOUS_SMC_DATE
from pat_liver_smc_his plsh
where plsh.patr_id = 34461
)
)
where the_same is null
order by plsh.patr_id, plsh.plsh_id desc;
答案 1 :(得分：1)
select plsh_id, patr_id, previous_smc, previous_smc_date,
current_smc, current_smc_date
from (select plsh_id, patr_id, previous_smc,
previous_smc_date, current_smc,
current_smc_date,
row_number() over(partition by patr_id, current_smc,
current_smc_date, previous_smc,
previous_smc_date
order by plsh_id desc) rn
from (select plsh_id, patr_id, current_smc,
trunc(current_smc_date) current_smc_date,
lag(current_smc) over(partition by patr_id
order by plsh_id) previous_smc,
trunc(lag(current_smc_date)
over(partition by patr_id
order by plsh_id)) previous_smc_date
from pat_liver_smc_his))
where rn = 1
order by patr_id, plsh_id desc