Self join / row_number() partition number generation based multiple status
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Thanks in Advance:)
Whenever there is a change in Status or Comment for name_id then we need to consider that record
Attached sample data excel with output
Table1 data
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Thanks for what? You haven't asked a question.
The absence of evidence is not evidence of absence
- Martin Rees
The absence of consumable DDL, sample data and desired results is, however, evidence of the absence of my response
- Phil Parkin -
hi
I have mentioned in excel sheet and both input and output required
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Please post your sample data in a consumable format, along with DDL. See here if you are unsure what is required. Many people here will not open Excel attachments, for security reasons. Simple text files are best.
Also, provide some details around what you have tried so far. Rather than expecting someone else to do all of your work, which starts to sound like you are being plain lazy, focus on specific problems you are encountering (duplicate rows, join issues, syntax errors etc etc).
The absence of evidence is not evidence of absence
- Martin Rees
The absence of consumable DDL, sample data and desired results is, however, evidence of the absence of my response
- Phil Parkin - ravisankar wrote:
Whenever there is a change in Status or Comment for name_id then we need to consider that record
The table could be altered so it becomes a "System-Versioned" temporal table. Then it would capture all changes committed to each row. If it's too much data (it would generate a history record if the 'remark' column were updated) you could create a trigger to maintain whatever is appropriate.
Aus dem Paradies, das Cantor uns geschaffen, soll uns niemand vertreiben können
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;WITH myTable AS
(
SELECT *
FROM (VALUES (1,10,'Deny','Denied','a','04/05/2020'),
(2,10,'Deny','Denied','b','04/06/2020'),
(3,10,'Approve','Approved','abc','04/07/2020'),
(4,10,'Approve','Pending','dsf','04/08/2020'),
(5,10,'Approve','Pending','ssss','04/08/2020'),
(6,10,'Pending','Pending','dfsd','04/08/2020'),
(7,10,'Deny','Change','c','04/08/2020')) AS T(id,name_id,Status,Comment,remark,Date)
),
CTE AS
(
SELECT *,
LAG(Comment) OVER (PARTITION BY name_id ORDER BY Date) PrevComment,
LAG(Status) OVER (PARTITION BY name_id ORDER BY Date) PrevStatus
FROM myTable
)
SELECT ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) Col1,
id,
name_id,
Status,
Comment,
remark,
Date
FROM CTE
WHERE PrevComment <> Comment
OR PrevStatus <> Status
OR PrevStatus IS NULL -
drop table if exists #data;
create table #data(
id int primary key not null,
name_id int,
[Status] varchar(12),
Comment varchar(64),
remark varchar(64),
day_dt date);
insert #data(id,name_id,[Status],Comment,remark,day_dt) VALUES
(1,101,'Deny','Denied','a','04/05/2020'),
(2,101,'Deny','Denied','b','04/06/2020'),
(3,102,'Approve','Approved','abc','04/07/2020'),
(4,102,'Approve','Pending','dsf','04/08/2020'),
(5,102,'Approve','Pending','ssss','04/08/2020'),
(6,103,'Pending','Pending','dfsd','04/08/2020'),
(7,101,'Deny','Change','c','04/08/2020'),
(8,101,'Deny','Denied','a','04/09/2020');
;with data_cte(id, name_id, [Status], Comment, remark, day_dt, PrevComment, PrevStatus) as (
select
*,
lag(Comment) over (partition by name_id order by day_dt),
lag([Status]) over (partition by name_id order by day_dt)
from
#data)
select
row_number() over (order by day_dt) col1,
id, name_id, [Status], Comment, remark, day_dt
from
data_cte
where
(PrevComment <> Comment or PrevComment is null)
or (PrevStatus <> [Status] or PrevStatus is null)
order by
day_dt;Aus dem Paradies, das Cantor uns geschaffen, soll uns niemand vertreiben können
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