Deletion Of Duplicate Values
Jun 11, 2007
hi,
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?
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Jun 11, 2007
Quote: 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
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Jul 23, 2005
Hi Everyone,I have a table in which their is record which is exactly same.I want to delete all the duplicate keeping ony 1 record in a table.ExampleTable AEmpid currentmonth PreviousmonthSupplimentarydays basic158 2001-11-25 00:00:00.000 2001-10-01 00:00:00.000 2.004701.00158 2001-11-25 00:00:00.000 2001-10-01 00:00:00.000 2.004701.00158 2001-11-25 00:00:00.000 2001-10-01 00:00:00.000 2.004701.00I want to delete 2 rows of above table.How can I achieve that.Any suggestion how can i do that.Thank you in advanceRichard
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Nov 17, 2000
I have a table...say tb1 of 20 columns which has 2.7 million rows. There is no PK and the only way of identifying a unique row can be done with combination of column1+column2+column3.
Can anyone help me how to idetify the duplicate rows and also delete the duplicate rows. And to commit after every 5000 rows.
ITS VERY URGENT....Thanks in advance.
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Nov 15, 2015
I have this table:
id | Name | Age
==================
1 | AAA | 22
1 | AAA | 22
2 | BBB | 33
2 | BBB | 33
2 | BBB | 33
3 | CCC | 44
4 | DDD | 55
I need to delete from this table all the duplicate records and leave only one record. The table will looks like this:
id | Name | Age
==================
1 | AAA | 22
2 | BBB | 33
3 | CCC | 44
4 | DDD | 55
I work with sqlCE for Mobile...
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Apr 8, 2008
Hi,
I want to insert data into table without duplicate values ..
how to do?
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Apr 14, 2004
I 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.
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Feb 8, 2007
I'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!
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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
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May 7, 2007
Hi,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.
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Aug 26, 1998
We 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.
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Sep 11, 2004
hi 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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Nov 12, 2004
I 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
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May 28, 2008
I 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';
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Mar 29, 2007
HI, 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
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May 9, 2000
We 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!
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Feb 5, 2005
Hi 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
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Dec 10, 2013
Is 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
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Jul 23, 2005
Hi 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.
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Jul 19, 2007
Is 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?
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Feb 28, 2008
Hi 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')
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Oct 18, 2001
There'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
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Mar 1, 2008
Hi 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
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Feb 18, 2015
I 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] .....
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Oct 2, 2000
After 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
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Jun 18, 2014
I 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.
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Oct 14, 2014
With 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]
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Oct 18, 2013
I'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...
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Oct 1, 2015
My 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
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Aug 27, 2007
How do I suppress duplicate values from being displayed on a report data region? Is there an option to suppress duplicates and where is it?
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Oct 14, 2015
I need write a query for removing duplicates, for Example in my table I have columns
A_ID name id
1 sam 10
2 sam 10
3 sam 10
4 sam 10
5 ccc 15
6 ccc 15
7 ccc 15
8 fff 20
9 fff 20
10 fff 20
So now I have duplicates values in id column so now I need to take only one value of each and delete the remaining. I need to take first id value 10,15,20 so only 3 rows should be there in my table.
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Nov 15, 2011
I have 2 excel tables files.One table has info about sales by country, by model, by date...and the other table has units by date.Obviously, the common key is "date"....and by creating a relationship, I can add "units" to my combined resulting table.However, I can't create the relationship. Excel keeps telling me: "the relationship cannot be created because each column contains duplicate values. Select at least one column that contains only unique values".
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Dec 19, 2007
Hello Everyone
I've created a report with a simple dataset that is similar to this
City , RequestID, Request Amount, ClaimID, ClaimAmount
El Monte 791 52,982.00 2157 41,143.75
El Monte 3691 11,838.00 3140 8,231.14
El Monte 3691 11,838.00 3141 990.00
El Monte 3691 11,838.00 3142 2,615.00
So I group by City, RequestID. On the first group I specified the expression to be City and in the header I list the city and in the footer I list the sum of Request amount. On the second group I specified the group by Request so in the header I placed requestID and on the footer I placed Request Amount. I set request information to hide the duplicates and I even add =Sum(Fields!RequestApprovedGrandTotal.Value,"GroupByRequestID") the scope of the group. But this is what I get:
For requestID = 3691 for Request Amount is 35,514.00 not 11,838.00. All the claim sums are correct and they are located on the detail row.
I've read that a work around is to create multiple dataset but I honestly believe that something as simple as this should work on the reporting server 2000. So I've come to the conclusion that I must be doing something wrong. Can someone give me a hand on this. Thanks.
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