Update using lead/rank
Goodmorning,I have a little trouble trying to update using lead/rank.
Summary of the issue: My table contains duplicate data (only difference being 2 fields reason viewer_org & interest) and rather than the operation/processing multuple lines I want to assign the org of duplicate records Viewer and then I can hold 1 row, which has a list of org that can consult them.
I took a few of the fields of interest here: -.
create table copy_test
(
OWNER_ORG varchar(10),
GEN_REC NUMBER(10),
VIEWER_ORG varchar(10),
INTEREST_REASON varchar(10),
col_1 varchar(10),
col_2 varchar(10),
col_3 varchar(10),
col_4 varchar(10)
);
Samples: -.INSERT INTO COPY_TEST (OWNER_ORG ,GEN_REC ,VIEWER_ORG ,INTEREST_REASON ,COL_1 ,COL_2 ,COL_3 ,COL_4 ) VALUES ('5AA' ,12345 ,'5AA' ,'6543' ,'' ,'' ,'' ,'' );
INSERT INTO COPY_TEST (OWNER_ORG ,GEN_REC ,VIEWER_ORG ,INTEREST_REASON ,COL_1 ,COL_2 ,COL_3 ,COL_4 ) VALUES ('5AA' ,12345 ,'5BB' ,'5430' ,'' ,'' ,'' ,'' );
INSERT INTO COPY_TEST (OWNER_ORG ,GEN_REC ,VIEWER_ORG ,INTEREST_REASON ,COL_1 ,COL_2 ,COL_3 ,COL_4 ) VALUES ('5BB' ,32165 ,'5CC' ,'430' ,'' ,'' ,'' ,'' );
INSERT INTO COPY_TEST (OWNER_ORG ,GEN_REC ,VIEWER_ORG ,INTEREST_REASON ,COL_1 ,COL_2 ,COL_3 ,COL_4 ) VALUES ('5BB' ,32165 ,'5AA' ,'5430' ,'' ,'' ,'' ,'' );
INSERT INTO COPY_TEST (OWNER_ORG ,GEN_REC ,VIEWER_ORG ,INTEREST_REASON ,COL_1 ,COL_2 ,COL_3 ,COL_4 ) VALUES ('5BB' ,32165 ,'5BB' ,'6543' ,'' ,'' ,'' ,'' );
INSERT INTO COPY_TEST (OWNER_ORG ,GEN_REC ,VIEWER_ORG ,INTEREST_REASON ,COL_1 ,COL_2 ,COL_3 ,COL_4 ) VALUES ('YAA' ,98765 ,'5AA' ,'0' ,'' ,'' ,'' ,'' );
INSERT INTO COPY_TEST (OWNER_ORG ,GEN_REC ,VIEWER_ORG ,INTEREST_REASON ,COL_1 ,COL_2 ,COL_3 ,COL_4 ) VALUES ('YAA' ,98765 ,'5BB' ,'543' ,'' ,'' ,'' ,'' );
Data looks like this: -. select * from copy_test;
OWNER_ORG GEN_REC VIEWER_ORG INTEREST_R COL_1 COL_2 COL_3 COL_4
---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
5AA 12345 5AA 6543
5AA 12345 5BB 5430
5BB 32165 5CC 430
5BB 32165 5AA 5430
5BB 32165 5BB 6543
YAA 98765 5AA 0
YAA 98765 5BB 543
Essential, we have 3 examples above (claim on gen_rec). The 1st example 5AA owner is a record that the Organization 5AA and 5BB are allowed to see. That's why he existing twice, viewer_org 5AA on 1 row and 5BB on the other. Then I need to assign these two organizations against one of the lines. I stated thise who strives to identify (a little): -.SET LINESIZE 250;
select GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG,VIEWER_ORG CL_1,
LEAD (VIEWER_ORG,1,0) OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) as CL_2,
LEAD (VIEWER_ORG,2,0) OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) as CL_3,
LEAD (VIEWER_ORG,3,0) OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) as CL_4,
RANK() OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) rank
from COPY_TEST
order by GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG;
Gives these results:-- GEN_REC VIEWER_ORG INTEREST_R OWNER_ORG CL_1 CL_2 CL_3 CL_4 RANK
---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
12345 5AA 6543 5AA 5AA 5BB 0 0 1
12345 5BB 5430 5AA 5BB 0 0 0 2
32165 5AA 5430 5BB 5AA 5BB 5CC 0 1
32165 5BB 6543 5BB 5BB 5CC 0 0 2
32165 5CC 430 5BB 5CC 0 0 0 3
98765 5AA 0 YAA 5AA 5BB 0 0 1
98765 5BB 543 YAA 5BB 0 0 0 2
This is the result, I need: -.GEN_REC VIEWER_ORG INTEREST_R OWNER_ORG CL_1 CL_2 CL_3 CL_4
12345 5AA 6543 5AA 5AA 5BB
12345 5BB 5430 5AA
32165 5AA 5430 5BB
32165 5BB 6543 5BB 5BB 5AA 5CC
32165 5CC 430 5BB
98765 5AA 0 YAA
98765 5BB 543 YAA 5AA 5BB
I need the information in the viewer_org field to be placed in depeneding CL_1 CL_2, CL_3 or CL_04 the number of duplicate rows it y a. (is never more than 4) the hierarchy of what line I want to update would be pitched what was the Interest_reason above, even if this isn't a body of numbers It may be that '0' is important.Any ideas guys?
One way would be to use Polish CASE in SELECT
with t_data as
(
SELECT
GEN_REC ,
VIEWER_ORG ,
INTEREST_REASON,
MAX(INTEREST_REASON) OVER (PARTITION BY GEN_REC) as max_int_reason,
OWNER_ORG,
VIEWER_ORG CL_1,
LEAD (VIEWER_ORG,1,0) OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) AS CL_2,
LEAD (VIEWER_ORG,2,0) OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) AS CL_3,
LEAD (VIEWER_ORG,3,0) OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) AS CL_4,
RANK() OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) rank
FROM
COPY_TEST
ORDER BY
GEN_REC ,
VIEWER_ORG ,
INTEREST_REASON,
OWNER_ORG
)
SELECT
t1.GEN_REC,
VIEWER_ORG ,
INTEREST_REASON,
CASE
WHEN INTEREST_REASON = max_int_reason
THEN
(SELECT
decode(cl_1,'0',null,cl_1)
FROM
t_data t2
WHERE
rank = 1
AND t1.gen_rec = t2.gen_rec)
ELSE
null
END cl_1,
CASE
WHEN INTEREST_REASON = max_int_reason
THEN
(SELECT
decode(cl_2,'0',null,cl_2)
FROM
t_data t2
WHERE
rank = 1
AND t1.gen_rec = t2.gen_rec)
ELSE
null
END cl_2,
CASE
WHEN INTEREST_REASON = max_int_reason
THEN
(SELECT
decode(cl_3,'0',null,cl_3)
FROM
t_data t2
WHERE
rank = 1
AND t1.gen_rec = t2.gen_rec)
ELSE
null
END cl_3,
CASE
WHEN INTEREST_REASON = max_int_reason
THEN
(SELECT
decode(cl_4,'0',null,cl_4)
FROM
t_data t2
WHERE
rank = 1
AND t1.gen_rec = t2.gen_rec)
ELSE
null
END cl_4
FROM
t_data t1 ;
GEN_REC VIEWER_ORG INTEREST_REASON CL_1 CL_2 CL_3 CL_4
---------------------- ---------- --------------- ---------- ---------- ---------- ----------
12345 5AA 6543 5AA 5BB
12345 5BB 5430
32165 5AA 5430
32165 5BB 6543 5AA 5BB 5CC
32165 5CC 430
98765 5AA 0
98765 5BB 543 5AA 5BB
7 rows selected
Tags: Database
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