Extracting The Duplicate Values
Sep 11, 2004hi all
i want to extract only the duplicate values from a table
can any one know the sql syntax for that
thnking u
jag
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Extracting Duplicate Record On The Same Id
Jul 9, 2007Hi everybody i need help on on a query on how i can extract this... with the following table below..
id pub
1 a
1 b
2 c
2 c
I need to extract only the id and pub where pub has more than one with the same id... in the case of the above the result would be
id pub
2 c
2 c
thanks
Lookup Table, Extracting Values
Sep 21, 2007I need some help with the following...
My data source has some columns I have to 'translate' first and then insert into my destination table.
Example Source data:
key size height
1 'Small' 'Tall'
2 'Big' 'Short'
has to become
1 'Y' 'P'
2 'N' 'D'
I thought of creating a lookup table (I'm talking about the real table, not a lookup transformation table) that would have these columns: column name, value_source, value_dest
Example:
col_name vl_source vl_dest
size 'Small' 'Y'
size 'Big' 'N'
height 'Tall' 'P'
... and so on, I believe you get the point
How would you extract the needed values? Can I use a select statement in a derived column expression? Any ideas? I'm not really fond of the idea to create n lookups, one for each column I have to translate, is there a slicker solution?
Extracting Specific Values From One Table And Insert Them Into Another
Jun 3, 2008Hello. I have a somwhat simple question.
I have a table inside my database where i have some columns. Id like to extract distinct values from one column and inser them into another. My table is named article and id like to slect all the destinct values from the column naned type inside my article table. Then i need to insert my values into a new table called type but i would also like the to have 2 columns inside my type table. 1 called counter witch is an auto increment PK, and another one named type where the results from my query would be inserted.
Iv tried a veriety of querys but none of them have managed to do this.
Could anyone help me construct this query?
Extracting Multiple Values As Comma Seperated
Jul 17, 2007Hi all,
This is my table :
WorkstationNo UserID
101 a1
102 a2
103 a3
101 a2
and there are many other fields too. The output I need is something like this
WorsktationNo OccupiedBy
101 a1,a2
102 a2
103 a3
In the similar fashion I would also require to retrieve the values based on the UserID something like this
UserID Workstations
a1 101
a2 101,102
a3 103
Could someone tell me how to write the query for this.
Null Values When Extracting Data From An Excel File
Oct 18, 2006Hello,
I'm trying to import some data from a spreadsheet to a database table from a package in integration services. The problem is that I see the data when I open the excel file but when I try to run my package , it doesn't insert any rows in the table and it finishes with a success status.
My excel file has some formulas to get the data from other worksheets. I added a Data Viewer and all I see is null values in every cell.
I need help...does anyone know what's wrong?
Extracting Data From Columns That Contain Multiple Values Spearated By A Comma
Nov 11, 2004Hi all,
If I have a column in one table (contracts) that contains a set of values (codes that identify the fields contract code) like as follows...
Code:
Contracts table
--------------------------------
Concode - description
--------------------------------
KIDD - Kidderminster General
UNIV - University Hospitals
and then another table (controls) which has a column called contracts where the data within the 'Contracts' field is set out like the following (yes that is right, each of the data in this column are the Foreign Keys which are separated by '/' in which I need to query against the contracts table ) ...
Code:
controls table
--------------------------
Code - Contracts
--------------------------
BA - KIDD /UNIV /NWPCT
With the those tables and the columns like they are, how can I get my query to display the following information...
PHP Code:
---------------------------------------------------
Con(Controls table) - Description(contracts table)
---------------------------------------------------
BA - Kidderminster General
BA - University Hospitals
---------------------------------------------------
I'm guessing my first job is to somehow extract those Foreign Keys from the 'Contracts' column in the 'Control' table
Tryst
Extracting Parameter Values From A Custom Data Processing Extension
Jun 23, 2006I've created a custom Data Processing Extension and I've implemented the IDBCommandAnalysis interface so that my reports can enter parameters and pass them to my Data Processing Extension.
My question is, how do I extract the value from the Parameters coming from the report? Where do the parameters get passed off from the report? I can query the Parameters collection and my report gets prompted in Preview mode to enter something for the parameter but I can't find the spot where it gets passed for processing.
How To Insert Values Without Duplicate Values?
Apr 8, 2008Hi,
I want to insert data into table without duplicate values ..
how to do?
Duplicate Values
Apr 14, 2004I have a table which is a license holder table (i.e., plumbers, electricians etc...) There are some people who appear in the table more than once as they have more than 1 type of license. I am tasked with querying out 200 of these people a week for mailing a recruitment letter which I am doing using the following select statement:
SELECT TOP 200 Technicians.Name, Technicians.Address, Technicians.City, Technicians.State, Technicians.ZipCode, Technicians.LicenseType
FROM Technicians
My problem is that this doesn't deal with the duplicates and distinct won't work because I need to pass the license type and that's the one field that's always distinct while the name and adress fields duplicate.
Duplicate Values...
Feb 8, 2007I'm ok at SQL, but this has really confused me - please help!
I've got a table which (amongst others) has two columns - myID, and barcode. Ideally myID and barcode should be a 1 to 1 relationship... but it's not. So how can I get a list of all rows where 1 barcode value has >1 myID? (and also vice versa if possible). Thanks!
Duplicate NAME Values
Oct 12, 2007
Hi Guys!
I am trying to figure out a query to which the logic is simple, but I'm missing some basic SQL skill or technique somewhere.....
I have a table called NAME, from which I want to display the following columns:
namecode name Postaladdress
(there's a column called NAME as well as the table being called name incase your wondering)...
I'm concerned with the namecode and name columns for now....
I want to find duplicate name values from the table, how do I do this?
for example, in name, I have the value 'Long water Beach' appear twice. I want the query to show me how many times this appears from this table (duplicate values??)
Both namecode and name are navchar datatypes. So far I tried something like:
select name, namecode, postaladdress
from name
where name in
(select name
from name
group by name, namecode, postaladdress
having count(name) > 1)
I guess we can focus on the subquery here, but I just need that function or code which shows me the duplicate values!! I know its something staring me in the face, but I just can't see it!!
Any help please???
Much appreciated
Need To Store Duplicate Values To DB
May 7, 2007Hi,I have written a stored procedure to store values from a report i generated to the DB. Now there is a column PKID which is the primary key but also needs to be repeated at times. I tried to clear the memory that the same PKID has already been entered for which I wrote another SP. SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOALTER PROCEDURE [dbo].[spCRMPublisherSummaryUpdate]( @ReportDate smalldatetime, @SiteID int, @DataFeedID int, @FromCode varchar, @Sent int, @Delivered int, @TotalOpens REAL, @UniqueUserOpens REAL, @UniqueUserMessageClicks REAL, @Unsubscribes REAL, @Bounces REAL, @UniqueUserLinkClicks REAL, @TotalLinkClicks REAL, @SpamComplaints int, @Cost int)ASSET NOCOUNT ON DECLARE @PKID INTDECLARE @TagID INTSELECT @TagID=ID FROM Tag WHERE SiteID=@SiteID AND FromCode=@FromCodeSELECT @PKID=PKID FROM DimTag WHERE TagID=@TagID AND StartDate<=@ReportDate AND @ReportDate< ISNULL(EndDate,'12/31/2050')IF @PKID IS NULL BEGIN SELECT TOP 1 @PKID=PKID FROM DimTag WHERE TagID=@TagID AND SiteID=@SiteIDDECLARE @LastReportDate smalldatetime, @LastSent INT, @LastDelivered INT, @LastTotalOpens Real, @LastUniqueUserOpens Real, @LastUniqueUserMessageClicks Real, @LastUniqueUserLinkClicks Real, @LastTotalLinkClicks Real, @LastUnsubscribes Real, @LastBounces Real, @LastSpamComplaints INT, @LastCost INT SELECT @Sent=@Sent-Sent,@Delivered=@Delivered-Delivered,@TotalOpens=@TotalOpens-TotalOpens,@UniqueUserOpens=@UniqueUserOpens-UniqueUserOpens,@UniqueUserMessageClicks=@UniqueUserMessageClicks-UniqueUserMessageClicks,@UniqueUserLinkClicks=@UniqueUserLinkClicks-UniqueUserLinkClicks,@TotalLinkClicks=@TotalLinkClicks-TotalLinkClicks,@Unsubscribes=@Unsubscribes-Unsubscribes,@Bounces=@Bounces-Bounces,@SpamComplaints=@SpamComplaints-SpamComplaints,@Cost=@Cost-Cost FROM CrmPublisherSummary WHERE @LastReportDate < @ReportDate AND SiteID=@SiteID AND TagPKID=@PKIDUPDATE CrmPublisherSummary SET Sent=@Sent, Delivered=@Delivered, TotalOpens=@TotalOpens, UniqueUserOpens=@UniqueUserOpens, UniqueUserMessageClicks=@UniqueUserMessageClicks, UniqueUserLinkClicks=@UniqueUserLinkClicks, TotalLinkClicks=@TotalLinkClicks, Unsubscribes=@Unsubscribes, Bounces=@Bounces, SpamComplaints=@SpamComplaints, Cost=@Cost, TagID=@TagID WHERE ReportDate=@ReportDate AND SiteID=@SiteID AND TagPKID=@PKIDENDELSE INSERT INTO CrmPublisherSummary( ReportDate, SiteID, TagPKID, Sent, Delivered, TotalOpens, UniqueUserOpens, UniqueUserMessageClicks, UniqueUserLinkClicks, TotalLinkClicks, Unsubscribes, Bounces, SpamComplaints, Cost, DataFeedID, TagID) VALUES( @ReportDate, @SiteID, @PKID, @Sent, @Delivered, @TotalOpens, @UniqueUserOpens, @UniqueUserMessageClicks, @UniqueUserLinkClicks, @TotalLinkClicks, @Unsubscribes, @Bounces, @SpamComplaints, @Cost, @DataFeedID, @TagID)SET NOCOUNT OFF this is the one to clear: SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOALTER proc [dbo].[spCRMPublisherSummaryClear]( @SiteID INT, @DataFeedID INT, @ReportDate SMALLDATETIME) AS DELETE LandingSiteSummary WHERE SiteID=@SiteID AND ReportDate=@ReportDatebut it doesnt seem to be working.Please suggest.
View 2 Replies View RelatedGetting Duplicate Identity Values In SQL 6.5
Aug 26, 1998We are experiencing a problem at more than one site - it has only
just started happening.
We are actually getting duplicate Identity column values in various
tables and the values seem random - its not like the counter just gets
wound back.
We have used dbcc checkident and also bcp out and in the data, which
of course corrected the tables but only temporarily. Our application
is not doing any select into`s - just plain old inserts which for some
reason are allowing dups to be inserted into the tables.
problem sites are either sp3 or sp4.
There are thousands of sites (including most of ours) where there are
no problems like this with this particular app.
Any help from anyone would be most appreciated.
Deletion Of Duplicate Values
Jun 11, 2007hi,
i am trying to delete rows where a particular column (hours) has the same value for the same member (primary key) but where the effective dates are different. i want to delete the duplicate(s) rows which have the most recent effective date(s).
can you help?
Counting Duplicate Values
Nov 12, 2004I know this question has been asked before but this is a little different and I can't seem to get my head around it right now.
What i have is a table like so:
ID1 ID2 DESC
100 24 something1
100 24 this is a test
100 24
100 25 somethingelse
101 36 something
101 37 something else altogether
What i need is to determine which ID1 value has the same ID2 value listed more than once WITH the description filled in. If there is no description filled in even though the ID2 may be listed twice on one ID1, then it's ok and don't want it displayed in the query.
So, in this case, ID1 of 100 has ID2 24 listed twice with a description on both ID2's (of 24). this is what I need to show up in the query like so:
ID1 ID2 DESC
100 24 something1
100 24 this is a test
Could someone give me a hand with this? I've found similiar problems...but haven't been able to apply those answers to this.
Thx
SQL FIND DUPLICATE VALUES
May 28, 2008I have written this script: What I want to do now is, with the new JOINED table find and display all the duplicates custID WHERE the price is either 100 OR 200. Can anyone help? I am very new to all this and can't see how to do it. Thanks!
SELECT
*
FROM
table_customer T1
INNER JOIN
table_itemsBought T2
ON
T2.custID = T1.custID
WHERE
price = '100'
OR price = '200';
Duplicate Reference Key Values
Mar 29, 2007HI, I keep getting this warning with a lookup (full cache mode) that retreives data form a table that contains the following information:
SRCE_SYS TABLE_NAME FIELD_NAME CODE ENGLISH_DESCRIPTION
STATIC STATIC PM_PC_TX_TYPE_CODE G GROSS
STATIC STATIC PM_PC_TX_TYPE_CODE E EXCESS
STATIC STATIC PM_PC_TX_TYPE_CODE F FACULTATIVE
STATIC STATIC PM_PC_TX_TYPE_CODE S SURPLUS
STATIC STATIC PM_PC_TX_RIDER_CODE BOAT BOAT
STATIC STATIC PM_PC_TX_RIDER_CODE RIDER RIDER
STATIC STATIC PM_PC_TX_RIDER_CODE CONT CONTENTS
The column tab matches SRCR_SYS, TABLE_NAME and FIELD_NAME (using constants defined in a derived column transform) .The code column comes from the source. We want to retreive the english_description colum from SRCR_SYS, TABLE_NAME,FIELD_NAME and CODE in the dataflow.
I would normally ignore the warning but sometimes, it seems that the lookup does not match any values and enabling memory restriction on the advanced tab resolve the issue and suppress the warning.
As I said, I keep getting this warning and I don't know why since there are no duplicates in the table? Am I missing something?
Thank you,
Christian
Duplicate Values In A Column.....URGENT!!
May 9, 2000We have a table with 1 million rows with duplicates in a column which allows nulls.Can we enforce uniqueness for only future inserts by anyway(ignoring the old ones)?
Thanks!
Checking Duplicate Values Two Tables
Feb 5, 2005Hi All,
Is it possible in SQL to Restrict value in one table checking a value on anather tables.
Scenerio-1.
I have two table let say,
Teb1 and Teb2. Teb1 has a column called- Business_type and Teb2 has a coulmn called Incorporated_date. I just need to restrict If the value of Business_type column in Teb1 is "Propritory" then Incorporated_date in Teb2 should not be blank (nulll) . Otherwise it can take null value.
Scenerio -2.[/B]
I have table called [B]SIC.
This table has a two column called SIC1 anc SIC2 . Is it possible to restrict that clumn SIC1 and SIC2 should have same values( duplicate values cannot be entered in both columns.
Please Advise.
Vijay
Page 2 - Deletion Of Duplicate Values
Jun 11, 2007Quote: Originally Posted by achoudry ps i am using sqlserver well, whaddya know, eh
do you realize you posted in the mysql forum?
i'm gonna move this thread to the sql server forum
Find Duplicate Values And Get Timediff
Dec 10, 2013Is there a way to find duplicate values and get the timediff from the start and end of each duplicate.
datetimeTagname value MachineValueTime Diff Minutes
12/9/13 8:55machine_1 14,423 Machine_1 14,423 5
12/9/13 9:00machine_1 14,423 Machine_1 14,428 9
12/9/13 9:05machine_1 14,428 Machine_1 42,743 4
12/9/13 9:10machine_1 14,428
12/9/13 9:14machine_1 14,428
12/9/13 11:32machine_1 42,743
12/9/13 11:36machine_1 42,743
Get Rows With Duplicate Values In Certain Columns
Jul 23, 2005Hi there,I would like to know how to get rows with duplicate values in certaincolumns. Let's say I have a table called "Songs" with the followingcolumns:artistalbumtitlegenretrackNow I would like to show the duplicate songs to the user. I considersongs that have the same artist and the same title to be the same song.Note: All columns do not have to be the same.How would I accomplish that with SQL in SQL Server?Thanks to everyone reading this. I hope somebody has an answer. I'vealready searched the whole newsgroups, but couldn't find the solution.
View 2 Replies View RelatedSetting That Disallows Duplicate Values In A Column?
Jul 19, 2007Is there a setting in SQL Server that ensures a column is not allowed to have the same value more than once? Or must this be set up in the insert statment itself? Or how about a business rule?
View 2 Replies View RelatedStopping Duplicate Values From A Junction Table
Feb 28, 2008Hi i have a junction table(UserGroups) which is linking my "users" table with my "groups" table, however when the information is coming back in the format below, instead i want the group names to appear in only one field, instead of repeating the same data, could someone please tell me what i need to change.
UserName: Edwin CarolsUserAge: 28JobTitle: ManagerGroupName: MUFC
UserName: Edwin CarolsUserAge: 28JobTitle: ManagerGroupName: AFC
Below is my SQL statement;
SELECT Users.UserName,Users.UserAge, Users.JobTitle, Groups.GroupName FROM Users INNER JOIN UserGroups ON Users.UserID = UserGroups.UserID INNER JOIN Groups ON UserGroups.GroupID = Groups.GroupID WHERE (Users.UserID = '5')
Filtering/Grouping To Remove Duplicate Values...
Oct 18, 2001There's some SQL below (T-SQL) & I'm wanting to have this result set
grouped by Venue_ID in order to remove rows where there are duplicate values contained in just one column.
The columns BCOM_ID contain unique values, but Venue_ID can have duplicate
values. I only want to get rows for one instance of the Venue_ID (per
BCOM_ID) - doesn't matter which instance but basically, no duplicates.
Oh yes, one of the columns is a Bit column.
Any ideas would be welcome & appreciated!
Many thanks,
Darren
darren@darrenbrook.fsnet.co.uk
SQL:-
SELECT Booking_Header.BH_ID,
Booking_Header.Booking_Header_Description,
Booking_Header.BStat_ID, Booking_Header.BT_ID,
Booking_Header.Tagged, Booking_Header.Status_Timestamp,
Booking_Header.Start_Date, Booking_Header.Days_Qty,
Proposal.PPL_ID, Proposal.PPL_Status,
Booking_Component.BCOM_ID,
Booking_Component.Component_Description,
Booking_Component.Venue_ID, Venue.Venue_Code,
Venue.Description, Address.Address_ID, Address.Town,
Booking_Status.BStat_Description,
Booking_Type.Type_Description
FROM dbo.Booking_Header INNER JOIN
dbo.Proposal ON
dbo.Booking_Header.BH_ID = dbo.Proposal.BH_ID INNER JOIN
dbo.Booking_Component ON
dbo.Proposal.PPL_ID = dbo.Booking_Component.PPL_ID INNER
JOIN
dbo.Venue ON
dbo.Booking_Component.Venue_ID = dbo.Venue.VE_ID INNER JOIN
dbo.Address ON
dbo.Venue.VE_ID = dbo.Address.VE_ID INNER JOIN
dbo.Booking_Status ON
dbo.Booking_Header.BStat_ID = dbo.Booking_Status.BStat_ID INNER
JOIN
dbo.Booking_Type ON
dbo.Booking_Header.BT_ID = dbo.Booking_Type.BT_ID
WHERE (dbo.Proposal.PPL_Status = 1) AND
(dbo.Booking_Header.BH_ID = 10)
Thanks,
Darren
Stopping Duplicate Values From A Junction Table
Mar 1, 2008Hi i have a junction table(UserGroups) which is linking my "users" table with my "groups" table, however when the information is coming back in the format below, instead i want the group names to appear in only one field, instead of repeating the same data, could someone please tell me what i need to change.
UserName: Edwin Carols
UserAge: 28
JobTitle: Manager
GroupName: MUFC
UserName: Edwin Carols
UserAge: 28
JobTitle: Manager
GroupName: AFC
Below is my SQL statement;
Code:
SELECT Users.UserName,Users.UserAge, Users.JobTitle, Groups.GroupName FROM Users INNER JOIN UserGroups ON Users.UserID = UserGroups.UserID INNER JOIN Groups ON UserGroups.GroupID = Groups.GroupID WHERE (Users.UserID = '5')
And my table structure is like;
Users; UserID, UserName, UserAge
Groups; GroupID, GroupName
UserGroups; UserGroupID, UserID, GroupID
SQL Server 2012 :: Duplicate Values In UNPIVOT
Feb 18, 2015I have a set of data in which i have a product number going through 6 stages and each stage has a date. Since the each stages are in columns, I have created a unpivot query to transpose the columns into rows.
The actual result data needs to be in format of
ProductNumber Event_NameEvent_Date Event_Days
101 Stage 1 2/13/2014 1
101 Stage 2 2/13/2014 0
101 Stage 3 2/18/2014 5
101 Stage 4 2/23/2014 5
However the result data i am getting is like
ProductNumber Event_NameEvent_Date Event_Days
101 Stage 1 2/13/2014 1
101 Stage 1 2/13/2014 0
101 Stage 1 2/18/2014 5
101 Stage 1 2/23/2014 5
101 Stage 2 2/13/2014 1
101 Stage 2 2/13/2014 0
101 Stage 2 2/18/2014 5
101 Stage 2 2/23/2014 5
The unpivot query is working fine however I am getting duplicate values in the result. For each productnumber there must be only 6 results however i am getting 24 rows for each product number due to duplication.
I have attached the code and the source data for reference
Code:
SELECT distinct ProductNumber ,
Event_Name ,
Event_Date ,
Event_Days
FROM(
SELECT ProductNumber ,
[Code] .....
Unique Constraint Does Not Permit Duplicate NULL Values
Oct 2, 2000After adding a Unique constraint to a database I cannot add more than one record with a null value for the constrained field. I've tried both adding the constraint to an empty table as well as a table with multiple null values already in the subject field; both efforts have failed.
According to BOL SQL-7 allows Unique Constraints on fields with Null values. Am I missing a step? I do need to allow nulls in the field yet ensure that when there is a non-null value it is unique.
The SQL statement I've used is: ALTER TABLE tbl_MasterUIC ADD CONSTRAINT uniquesamplenbr UNIQUE NONCLUSTERED (samplenbr)
Thanks for any and all suggestions
Removing Duplicate Delimited Values From A Single Column?
Jun 18, 2014I have a stored procedure that returns a single row based on a parameter of employee ID. This particular procedure uses a CTE to traverse our org structure. One of the columns is returning a delimited string of Windows login values and due to the business rules, it can contain duplicate values. I need to have that column contain only unique values - no dupes.
For example, this one column could contain something like this:
domainuser1;domainuser2;domainuser2;domainuser 3;
The need is to convert to this:
domainuser1;domainuser2;domainuser3;
I know that's a tall order.
SQL Server 2012 :: Reducing Duplicate Row Because Of Different Column Values?
Oct 14, 2014With the data example below I am trying to consolidate the duplicate rows by flattening the dealer and billcode, or putting those values in each of the columns instead of creating separate rows...
74 MARTHA PATNE RIPLEY 1 23,327,76 ROTTINGDAM AAC SPRINGFIELD 3052 USA MPATRIP@AMERICANALARM.COM,MPATRIP@COMCAST.NET,PRIPLEY@ONECOMMUNICATIONS.COM
[table]
arnumbercustomernamedealerbillcodeaddl_addraddr1addr2branchcityzipcodecountryemaildefaultEmail
39SUSAN THALKER 2271BOTTOMWOOD RDAACHAMMOND02180-2703USASUWS3@COMCAST.NET1
56ANN REBELLO 123SHERIDAN AVEAACMEDFORD2155USANULLNULL
58DARRELL/PATTI SANDERS 6020DOTY AVENUEAACDANVERS1923USANULLNULL
74MARTHA PATNE RIPLEY 123ROTTINGDAM DRAACSPRINGFIELD3052USAMPATRIP@AMERICANALARM.COM1
74MARTHA PATNE RIPLEY 1327ROTTINGDAM DRAACSPRINGFIELD3052USAMPATRIP@COMCAST.NET1
74MARTHA PATNE RIPLEY 176ROTTINGDAM DRAACSPRINGFIELD3052USAPRIPLEY@ONECOMMUNICATIONS.COM1
[/table]
Group By After Outer Join - Getting Duplicate Or Null Values
Oct 18, 2013I've got 2 tables of towns. I'm using outer join because i need all the town from both tables. However I'm sometimes getting duplicates.
My query
select a.town, b.town
from a
outer join b on a.town = b.town
group by a.town, b.town
How to stop getting null values?
portsmouth null
portsmouth portsmouth
southampton southampton
null southampton
TownA null
null TownB
I'm looking for distinct values like this:
portsmouth portsmouth
southampton southampton
TownA null
null TownB
etc...
Transact SQL :: Group By Count Once For Duplicate Column Values?
Oct 1, 2015My data is like below:
ClassId ClassName StudentId Subject SubjectId
1 ESL 12 English 20
1 ESL 13 Science 30
1 ESL 12 Social 40
1 ESL 12 Maths 50
Required output: parameters are Subject column values
ClassId ClassName TotalStudents SubjectIds
1 ESL 1 20, 40, 50
1 ESL 1 30
When one student takes multiple subjects then count student only once, so in the above data 12 is one student id takes multiple subjects so counted only once. TotalStudents value is 1
I did write below query:
Declare @subjectids string
set @subjectids = '20,30,40,50'
-- will split @subjectids and store in temp table
select classname, classid, Count(Distinct StudentId)
from mytable
where SubjectsIds in @subjectIds
group by ClassId, ClassName, SubjectId,
but it gives me below output:
ClassId ClassName TotalStudents SubjectIds
1 ESL 1 20
1 ESL 1 30
1 ESL 1 40
1 ESL 1 50