Oracle SQL - DENSE_RANK
I have a Client data table, selected columns of which are shown below:
Row_ID Client_ID Status_ID From_date To_date
1 123456 4
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As I understood, this is what you need:
select client_ID, status_id, from_date, to_date, sum(start_of_group) over (order by client_ID, from_date) + 1 rank from (SELECT c.client_ID, c.status_id, c.from_date, c.to_date, case when lag(c.client_ID, 1, c.client_ID) over (order by c.client_ID, c.from_date) = c.client_ID and lag(c.status_id, 1, c.status_id) over (order by c.client_ID, c.from_date) = c.status_id then 0 else 1 end start_of_group FROM client c) order by client_ID, from_dateSQLFiddle
讨论(0) -
the thing is that you need to partition your ranking over the CHANGE of the status, not the VALUE of the status. I'm leaving some extra columns in the output so that you can see how it is all derived:
WITH dat as ( SELECT 1 row_id, 123456 client_id, 4 status, to_date('20/12/2007 18:02','dd/mm/yyyy hh24:mi') frdate, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 2 row_id, 789087 client_id, 4 status, to_date('20/12/2007 18:02','dd/mm/yyyy hh24:mi') frdate, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 3 row_id, 789087 client_id, 4 status, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') frdate, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 4 row_id, 789087 client_id, 4 status, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') frdate, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 5 row_id, 123456 client_id, 4 status, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') frdate, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 6 row_id, 123456 client_id, 4 status, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') frdate, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 7 row_id, 123456 client_id, 4 status, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') frdate, to_date('21/12/2007 16:39','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 8 row_id, 789087 client_id, 4 status, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') frdate, to_date('21/12/2007 17:54','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 9 row_id, 789087 client_id, 4 status, to_date('21/12/2007 17:54','dd/mm/yyyy hh24:mi') frdate, to_date('21/12/2007 18:32','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 10 row_id, 789087 client_id, 4 status, to_date('21/12/2007 18:32','dd/mm/yyyy hh24:mi') frdate, to_date('22/12/2007 06:48','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 11 row_id, 123456 client_id, 5 status, to_date('21/12/2007 16:39','dd/mm/yyyy hh24:mi') frdate, null from dual union all SELECT 12 row_id, 789087 client_id, 5 status, to_date('22/12/2007 06:48','dd/mm/yyyy hh24:mi') frdate, to_date('22/12/2007 10:53','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 13 row_id, 789087 client_id, 4 status, to_date('22/12/2007 10:53','dd/mm/yyyy hh24:mi') frdate, to_date('22/12/2007 11:51','dd/mm/yyyy hh24:mi') todate from dual union all SELECT 14 row_id, 789087 client_id, 5 status, to_date('22/12/2007 11:51','dd/mm/yyyy hh24:mi') frdate, null from dual) SELECT t1.*, DENSE_RANK () OVER (ORDER BY t1.client_id, t1.chg_status) rank_id FROM (select client_id, status, prev_status, sum(case when nvl(prev_status,-1) != status then 1 else 0 end) over (partition by client_id order by frdate) chg_status, frdate, todate from ( SELECT c.client_ID , c.status , lag(status) over (partition by client_id order by frdate) as prev_status , c.frdate , c.todate FROM dat c ORDER BY c.client_id, c.frdate)) t1 ORDER BY t1.client_id, t1.frdateReturns:
CLIENT_ID, STATUS, PREV_STATUS, CHG_STATUS, FRDATE, TODATE, RANK_ID 123456, 4, , 1, 20/12/2007 6:02:00 PM, 20/12/2007 6:07:00 PM, 1 123456, 4, 4, 1, 20/12/2007 6:07:00 PM, 20/12/2007 6:50:00 PM, 1 123456, 4, 4, 1, 20/12/2007 6:50:00 PM, 21/12/2007 10:38:00 AM, 1 123456, 4, 4, 1, 21/12/2007 10:38:00 AM, 21/12/2007 4:39:00 PM, 1 123456, 5, 4, 2, 21/12/2007 4:39:00 PM,, 2 789087, 4, , 1, 20/12/2007 6:02:00 PM,20/12/2007 6:07:00 PM, 3 789087, 4, 4, 1, 20/12/2007 6:07:00 PM,20/12/2007 6:50:00 PM, 3 789087, 4, 4, 1, 20/12/2007 6:50:00 PM, 21/12/2007 10:38:00 AM, 3 789087, 4, 4, 1, 21/12/2007 10:38:00 AM, 21/12/2007 5:54:00 PM, 3 789087, 4, 4, 1, 21/12/2007 5:54:00 PM, 21/12/2007 6:32:00 PM, 3 789087, 4, 4, 1, 21/12/2007 6:32:00 PM,22/12/2007 6:48:00 AM, 3 789087, 5, 4, 2, 22/12/2007 6:48:00 AM, 22/12/2007 10:53:00 AM, 4 789087, 4, 5, 3, 22/12/2007 10:53:00 AM, 22/12/2007 11:51:00 AM, 5 789087, 5, 4, 4, 22/12/2007 11:51:00 AM,, 6讨论(0) -
Simple mark all status changes for each client with
1(column GRP below). Than add those number using analytic SUM function:with tab1 as ( select client_id,from_date, status, nvl(lag(status) over (partition by client_id order by from_date),-1) status_lag, case when (nvl(lag(status) over (partition by client_id order by from_date),-1) <> status) then 1 end grp from tst ) , tab2 as ( select client_id,from_date, status,status_lag, grp, sum(grp) over (partition by client_id order by from_date) as RANK from tab1 ) select * from tab2;gives as expected
CLIENT_ID FROM_DATE STATUS STATUS_LAG GRP RANK ---------- ------------------- ---------- ---------- ---------- ---------- 1001 01.10.2015 00:00:00 1 -1 1 1 1001 02.10.2015 00:00:00 1 1 1 1001 03.10.2015 00:00:00 2 1 1 2 1001 04.10.2015 00:00:00 2 2 2 1001 05.10.2015 00:00:00 3 2 1 3 1001 09.10.2015 00:00:00 1 3 1 4 1002 12.10.2015 00:00:00 1 -1 1 1 1002 13.10.2015 00:00:00 3 1 1 2 1002 15.10.2015 00:00:00 3 3 2my setup
create table tst (client_id number, from_date date, status number); insert into tst values (1001, to_date('01-10-15','dd-mm-rr'),1); insert into tst values (1001, to_date('02-10-15','dd-mm-rr'),1); insert into tst values (1001, to_date('03-10-15','dd-mm-rr'),2); insert into tst values (1001, to_date('04-10-15','dd-mm-rr'),2); insert into tst values (1001, to_date('05-10-15','dd-mm-rr'),3); insert into tst values (1001, to_date('09-10-15','dd-mm-rr'),1); insert into tst values (1002, to_date('12-10-15','dd-mm-rr'),1); insert into tst values (1002, to_date('13-10-15','dd-mm-rr'),3); insert into tst values (1002, to_date('15-10-15','dd-mm-rr'),3); commit;讨论(0) -
Here's a solution using Tabibitosan:
with client as (select 1 row_id, 123456 client_id, 4 status_id, to_date('20/12/2007 18:02','dd/mm/yyyy hh24:mi') from_date, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') todate from dual union all select 2 row_id, 789087 client_id, 4 status_id, to_date('20/12/2007 18:02','dd/mm/yyyy hh24:mi') from_date, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') todate from dual union all select 3 row_id, 789087 client_id, 4 status_id, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') from_date, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') todate from dual union all select 4 row_id, 789087 client_id, 4 status_id, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') from_date, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') todate from dual union all select 5 row_id, 123456 client_id, 4 status_id, to_date('20/12/2007 18:07','dd/mm/yyyy hh24:mi') from_date, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') todate from dual union all select 6 row_id, 123456 client_id, 4 status_id, to_date('20/12/2007 18:50','dd/mm/yyyy hh24:mi') from_date, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') todate from dual union all select 7 row_id, 123456 client_id, 4 status_id, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') from_date, to_date('21/12/2007 16:39','dd/mm/yyyy hh24:mi') todate from dual union all select 8 row_id, 789087 client_id, 4 status_id, to_date('21/12/2007 10:38','dd/mm/yyyy hh24:mi') from_date, to_date('21/12/2007 17:54','dd/mm/yyyy hh24:mi') todate from dual union all select 9 row_id, 789087 client_id, 4 status_id, to_date('21/12/2007 17:54','dd/mm/yyyy hh24:mi') from_date, to_date('21/12/2007 18:32','dd/mm/yyyy hh24:mi') todate from dual union all select 10 row_id, 789087 client_id, 4 status_id, to_date('21/12/2007 18:32','dd/mm/yyyy hh24:mi') from_date, to_date('22/12/2007 06:48','dd/mm/yyyy hh24:mi') todate from dual union all select 11 row_id, 123456 client_id, 5 status_id, to_date('21/12/2007 16:39','dd/mm/yyyy hh24:mi') from_date, null from dual union all select 12 row_id, 789087 client_id, 5 status_id, to_date('22/12/2007 06:48','dd/mm/yyyy hh24:mi') from_date, to_date('22/12/2007 10:53','dd/mm/yyyy hh24:mi') todate from dual union all select 13 row_id, 789087 client_id, 4 status_id, to_date('22/12/2007 10:53','dd/mm/yyyy hh24:mi') from_date, to_date('22/12/2007 11:51','dd/mm/yyyy hh24:mi') todate from dual union all select 14 row_id, 789087 client_id, 5 status_id, to_date('22/12/2007 11:51','dd/mm/yyyy hh24:mi') from_date, null from dual) select row_id, client_id, status_id, from_date, todate, dense_rank() over (order by client_id, status_id, grp) rank_id from (select row_id, client_id, status_id, from_date, todate, row_number() over (order by client_id, from_date) - row_number() over (partition by status_id order by client_id, from_date) grp -- this is the tabibitosan step from client) t1 order by client_id, from_date, status_id; ROW_ID CLIENT_ID STATUS_ID FROM_DATE TODATE RANK_ID ---------- ---------- ---------- ---------------- ---------------- ---------- 1 123456 4 20/12/2007 06:02 20/12/2007 06:07 1 5 123456 4 20/12/2007 06:07 20/12/2007 06:50 1 6 123456 4 20/12/2007 06:50 21/12/2007 10:38 1 7 123456 4 21/12/2007 10:38 21/12/2007 04:39 1 11 123456 5 21/12/2007 04:39 2 2 789087 4 20/12/2007 06:02 20/12/2007 06:07 3 3 789087 4 20/12/2007 06:07 20/12/2007 06:50 3 4 789087 4 20/12/2007 06:50 21/12/2007 10:38 3 8 789087 4 21/12/2007 10:38 21/12/2007 05:54 3 9 789087 4 21/12/2007 05:54 21/12/2007 06:32 3 10 789087 4 21/12/2007 06:32 22/12/2007 06:48 3 12 789087 5 22/12/2007 06:48 22/12/2007 10:53 5 13 789087 4 22/12/2007 10:53 22/12/2007 11:51 4 14 789087 5 22/12/2007 11:51 6讨论(0)
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