T-SQL: I want to get result in like in second screenshot - sql

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This is my problem case in which we have have to group partner ID on the basis of thire and and assign them a rank ID.
Here some rank ID have same group count and same partnerid we want to identify them and remove them.
Desired result should be like this:


You want to select the distinct rows?
select distinct groupcount, partnerid
from tbl
test setup:
create table tbl (RankId int, GroupCount int, PartnerId int);
insert into tbl values
(1,2,316),(1,2,329)
,(2,2,316),(2,2,329)
,(3,3,316),(3,3,329),(3,3,319);
select distinct GroupCount, PartnerId
from tbl;
rextester demo: http://rextester.com/CXTE98698
returns:
+------------+-----------+
| GroupCount | PartnerId |
+------------+-----------+
| 2 | 316 |
| 2 | 329 |
| 3 | 316 |
| 3 | 319 |
| 3 | 329 |
+------------+-----------+

Related

How to delete the rows with three same data columns and one different data column

I have a table "MARK_TABLE" as below.
How can I delete the rows with same "STUDENT", "COURSE" and "SCORE" values?
| ID | STUDENT | COURSE | SCORE |
|----|---------|--------|-------|
| 1 | 1 | 1 | 60 |
| 3 | 1 | 2 | 81 |
| 4 | 1 | 3 | 81 |
| 9 | 2 | 1 | 80 |
| 10 | 1 | 1 | 60 |
| 11 | 2 | 1 | 80 |
Now I already filtered the data I want to KEEP, but without the "ID"...
SELECT student, course, score FROM mark_table
INTERSECT
SELECT student, course, score FROM mark_table
The output:
| STUDENT | COURSE | SCORE |
|---------|--------|-------|
| 1 | 1 | 60 |
| 1 | 2 | 81 |
| 1 | 3 | 81 |
| 2 | 1 | 80 |

Use the following query to delete the desired rows:
DELETE FROM MARK_TABLE M
WHERE
EXISTS (
SELECT
1
FROM
MARK_TABLE M_IN
WHERE
M.STUDENT = M_IN.STUDENT
AND M.COURSE = M_IN.COURSE
AND M.SCORE = M_IN.SCORE
AND M.ID < M_IN.ID
)
OUTPUT
db<>fiddle demo
Cheers!!

use distinct
SELECT distinct student, course, score FROM mark_table

Assuming you don't just want to select the unique data you want to keep (you mention you've already done this), you can proceed as follows:
Create a temporary table to hold the data you want to keep
Insert the data you want to keep into the temporary table
Empty the source table
Re-Insert the data you want to keep into the source table.

select * from
(
select row_number() over (partition by student,course,score order by score)
rn,student,course,score from mark_table
) t
where rn=1

Use CTE with RowNumber
create table #MARK_TABLE (ID int, STUDENT int, COURSE int, SCORE int)
insert into #MARK_TABLE
values
(1,1,1,60),
(3,1,2,81),
(4,1,3,81),
(9,2,1,80),
(10,1,1,60),
(11,2,1,80)
;with cteDeleteID as(
Select id, row_number() over (partition by student,course,score order by score) [row_number] from #MARK_TABLE
)
delete from #MARK_TABLE where id in
(
select id from cteDeleteID where [row_number] != 1
)
select * from #MARK_TABLE
drop table #MARK_TABLE

sql query to find unique records

I am new to sql and need your help to achieve the below , I have tried using group and count functions but I am getting all the rows in the unique group which are duplicated.
Below is my source data.
CDR_ID,TelephoneNo,Call_ID,call_Duration,Call_Plan
543,xxx-23,12,12,500
543,xxx-23,12,12,501
543,xxx-23,12,12,510
643,xxx-33,11,17,700
343,xxx-33,11,17,700
766,xxx-74,32,1,300
766,xxx-74,32,1,300
877,xxx-32,12,2,300
877,xxx-32,12,2,300
877,xxx-32,12,2,301
Please note :-the source has multiple combinations of unique records, so when I do the count the unique set is not appearing as count =1
example :- the below data in source have 60 records for each combination
877,xxx-32,12,2,300 -- 60 records
877,xxx-32,12,2,301 -- 60 records
I am trying to get the unique unique records, but the duplicate records are also getting in
Below are the rows which should come up in the unique group. i.e. there will be multiple call_Plans for the same combinations of CDR_ID,TelephoneNo,Call_ID,call_Duration. I want to read records for which there is only one call plan for each unique combination of CDR_ID,TelephoneNo,Call_ID,call_Duration,
CDR_ID,TelephoneNo,Call_ID,call_Duration,Call_Plan
643,xxx-33,11,17,700
343,xxx-33,11,17,700
766,xxx-74,32,1,300
Please advice on this.
Thanks and Regards

To do more complex groupings you could also use a Common Table Expression/Derived Table along with windowed functions:
declare #t table(CDR_ID int,TelephoneNo nvarchar(20),Call_ID int,call_Duration int,Call_Plan int);
insert into #t values (543,'xxx-23',12,12,500),(543,'xxx-23',12,12,501),(543,'xxx-23',12,12,510),(643,'xxx-33',11,17,700),(343,'xxx-33',11,17,700),(766,'xxx-74',32,1,300),(766,'xxx-74',32,1,300),(877,'xxx-32',12,2,300),(877,'xxx-32',12,2,300),(877,'xxx-32',12,2,301);
with cte as
(
select CDR_ID
,TelephoneNo
,Call_ID
,call_Duration
,Call_Plan
,count(*) over (partition by CDR_ID,TelephoneNo,Call_ID,call_Duration) as c
from (select distinct * from #t) a
)
select *
from cte
where c = 1;
Output:
+--------+-------------+---------+---------------+-----------+---+
| CDR_ID | TelephoneNo | Call_ID | call_Duration | Call_Plan | c |
+--------+-------------+---------+---------------+-----------+---+
| 343 | xxx-33 | 11 | 17 | 700 | 1 |
| 643 | xxx-33 | 11 | 17 | 700 | 1 |
| 766 | xxx-74 | 32 | 1 | 300 | 1 |
+--------+-------------+---------+---------------+-----------+---+

using not exists()
select distinct *
from t
where not exists (
select 1
from t as i
where i.cdr_id = t.cdr_id
and i.telephoneno = t.telephoneno
and i.call_id = t.call_id
and i.call_duration = t.call_duration
and i.call_plan <> t.call_plan
)
rextester demo: http://rextester.com/RRNNE20636
returns:
+--------+-------------+---------+---------------+-----------+-----+
| cdr_id | TelephoneNo | Call_id | call_Duration | Call_Plan | cnt |
+--------+-------------+---------+---------------+-----------+-----+
| 343 | xxx-33 | 11 | 17 | 700 | 1 |
| 643 | xxx-33 | 11 | 17 | 700 | 1 |
| 766 | xxx-74 | 32 | 1 | 300 | 1 |
+--------+-------------+---------+---------------+-----------+-----+

Basically you should try this:
SELECT A.CDR_ID, A.TelephoneNo, A.Call_ID, A.call_Duration, A.Call_Plan
FROM YOUR_TABLE A
INNER JOIN (SELECT CDR_ID,TelephoneNo,Call_ID,call_Duration
FROM YOUR_TABLE
GROUP BY CDR_ID,TelephoneNo,Call_ID,call_Duration
HAVING COUNT(*)=1
) B ON A.CDR_ID= B.CDR_ID AND A.TelephoneNo=B.TelephoneNo AND A.Call_ID=B.Call_ID AND A.call_Duration=B.call_Duration
You can do a shorter query using Windows Function COUNT(*) OVER ...

Below query will provide you the result
SELECT CDR_ID,TelephoneNo,Call_ID,call_Duration,Call_Plan, COUNT(*)
FROM TABLE_NAME GROUP BY CDR_ID,TelephoneNo,Call_ID,call_Duration,Call_Plan
HAVING COUNT(*) < 2;
It gives you with the count as well. If not required you can remove it.

Select *, count(CDR_ID)
from table
group by CDR_ID, TelephoneNo, Call_ID, call_Duration, Call_Plan
having count(CDR_ID) = 1

Do I need a recursive CTE to update a table that relies on itself?

I need to apologize for the title. I put a lot of thought into it but didn't get too far.
I have a table that looks like this:
+--------------------------------------+--------------------------------------+--------------------------------------+--------------------------------------+--------+
| accountid | pricexxxxxid | accountid | pricelevelid | counts |
+--------------------------------------+--------------------------------------+--------------------------------------+--------------------------------------+--------+
| 36B077D4-E765-4C70-BE18-2ECA871420D3 | 00000000-0000-0000-0000-000000000000 | 36B077D4-E765-4C70-BE18-2ECA871420D3 | F43C47CE-28C6-42E2-8399-92C58ED4BA9D | 1 |
| EBC18CBC-2D2E-44CB-B36A-0ADE9E2BDE9F | 00000000-0000-0000-0000-000000000000 | EBC18CBC-2D2E-44CB-B36A-0ADE9E2BDE9F | 3BEEA9D3-F26B-47E4-88FA-A2AA366980ED | 1 |
| 8DC8D0FC-3138-425A-A922-2F0CAC57E887 | 00000000-0000-0000-0000-000000000000 | 8DC8D0FC-3138-425A-A922-2F0CAC57E887 | F1B8AD5D-B008-4C3F-94A0-AD3F90C777D7 | 1 |
| 8F908A92-1327-4655-BAE4-C890D971A554 | 00000000-0000-0000-0000-000000000000 | 8F908A92-1327-4655-BAE4-C890D971A554 | 2E0EC67E-5F8F-4305-932E-BBF8DF83DBEC | 1 |
| 37221AAC-B885-4002-B7D9-591F8C14D019 | 00000000-0000-0000-0000-000000000000 | 37221AAC-B885-4002-B7D9-591F8C14D019 | F4A2A0CA-FDFF-4C21-AE92-D4583DC18DED | 1 |
| 66F406B4-0D9B-40B8-9A23-119EE74B00B7 | 00000000-0000-0000-0000-000000000000 | 66F406B4-0D9B-40B8-9A23-119EE74B00B7 | 204B8570-CEBA-4C72-9B72-8B9B14AF625E | 2 |
| D0168CE3-479E-439E-967C-4FF0D701291A | 00000000-0000-0000-0000-000000000000 | D0168CE3-479E-439E-967C-4FF0D701291A | 204B8570-CEBA-4C72-9B72-8B9B14AF625E | 2 |
| 57E5F6E5-0A8A-4E54-B793-2F6493DC1EA3 | 00000000-0000-0000-0000-000000000000 | 57E5F6E5-0A8A-4E54-B793-2F6493DC1EA3 | 893F9FD2-43C9-4355-AEFC-08A62BF2B066 | 3 |
+--------------------------------------+--------------------------------------+--------------------------------------+--------------------------------------+--------+
It is sorted by ascending counts.
I would like to update the pricexxxxids that are all 00000000-0000-0000-0000-000000000000 with their corresponding pricelevelid.
For example for accountid = 36B077D4-E765-4C70-BE18-2ECA871420D3 I would like the pricexxxxid to be F43C47CE-28C6-42E2-8399-92C58ED4BA9D.
After that is done, I would like all the records FOLLOWING this one where accountid = 36B077D4-E765-4C70-BE18-2ECA871420D3 to be deleted.
Another words in result I will end up with a distinct list of accountids with pricexxxxid to be assigned with the corresponding value from pricelevelid.
Thank you so much for your guidance.

for your first case do !
update table
set pricexxxxids=pricelevelid.
if i understand your second case correctly :(delete duplicates/select distinct)?
delete from
(
select *,rn=row_number()over(partition by accountid order by accountid) from table
)x
where rn>1
--select distinct * from table
edited
select * from
(
select *,rn=row_number()over(partition by accountid order by accountid) from table
)x
where x.rn=1
updated
SELECT accountid,pricelevelid FROM
(
(SELECT *,
Row_number() OVER ( partition BY accountid ORDER BY counts, pricelevelid ) AS Recency
FROM table
)x
WHERE x.Recency = 1

How to select row with the latest timestamp from duplicated rows in a database table?

I have a table with duplicate & triplicate rows - how do I select the rows that are duplicated but have the latest timestamp as well as the un-duped rows?
-------------------------------------
| pk_id | user_id | some_timestamp |
|-------------------------------------|
| 1 | 123 | 10-Jun-12 14.30 |
| 2 | 123 | 19-Jun-12 21.50 |
| 3 | 567 | 10-Jun-12 09.23 |
| 4 | 567 | 12-Jun-12 09.45 |
| 5 | 567 | 13-Jun-12 08.40 |
| 6 | 890 | 13-Jun-12 08.44 |
-------------------------------------
So that I end up with:
-------------------------------------
| pk_id | user_id | some_timestamp |
|-------------------------------------|
| 2 | 123 | 19-Jun-12 21.50 |
| 5 | 567 | 13-Jun-12 08.40 |
| 6 | 890 | 13-Jun-12 08.44 |
-------------------------------------

SELECT * FROM (
SELECT pk_id,
user_id,
some_timestamp,
ROW_NUMBER() OVER (PARTITION BY user_id ORDER BY some_timestamp DESC) col
FROM table) x
WHERE x.col = 1

try this
select * from table
where some_timestamp
in (select max(some_timestamp)
from table group by user_id)

Try this, I made a SQLFIDDLE which returns the correct set of data
SELECT * FROM YourTable AS T1
INNER JOIN
( SELECT user_id , MAX(some_timestamp) AS some_timestamp FROM YourTable
GROUP BY user_id
) AS T2
ON T1.User_Id = T2.User_Id AND T1.some_timestamp = T2.some_timestamp
ORDER BY 1
http://sqlfiddle.com/#!6/f7bba/6

Try this:
select * from my_table
where (user_id, some_timestamp) IN (select user_id, max(some_timestamp) from my_table group by user_id);

select YourTable.*
from
YourTable JOIN
(select User_Id, Max(Some_Timestamp) as Mx
from YourTable
group by User_Id) Mx
on YourTable.User_Id=Mx.User_Id
and YourTable.Some_Timestamp=Mx.Mx

... where count(col) > 1

I have a table like this:
+-----+-----+-------+
| id | fk | value |
+-----+-----+-------+
| 0 | 1 | peter |
| 1 | 1 | josh |
| 3 | 2 | marc |
| ... | ... | ... |
I'd like now to get all entries which have more than one value.
The expected result would be:
+-----+-------+
| fk | count |
+-----+-------+
| 1 | 2 |
| ... | ... |
I tried to achieve that like this:
select fk, count(value) from table where count(value) > 1;
But Oracle didn't like it.
So I tried this...
select * from (
select fk, count(value) as cnt from table
) where cnt > 1;
...with no success.
Any ideas?

Use the having clause for comparing aggregates.
Also, you need to group by what you're aggregating against for the query to work correctly. The following is a start, but since you're missing a group by clause still it won't quite work. What exactly are you trying to count?
select fk, count(value)
from table
group by fk
having count(value) > 1;