Duplicate Values In A Column.....URGENT!!

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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Setting That Disallows Duplicate Values In A Column?

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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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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SQL Server 2012 :: Reducing Duplicate Row Because Of Different Column Values?

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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Transact SQL :: Group By Count Once For Duplicate Column Values?

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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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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Apr 16, 2008

Hi every one,
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can any one help me in this issue?. if the report is getting acceptable amout of data it is printing in proper way i.e no balnk pages at all.i maintained all properties like margins+body size < page size.

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Sep 7, 2015

We have SharePoint list which has, say, two columns. Column A and Column B.

Column A can have three values - red, blue & green.

Column B can have four values - pen, marker, pencil & highlighter.

A typical view of list can be:

Column A - Column B
red  - pen
red - pencil
red - highlighter
blue - marker
blue - pencil
green - pen
green - highlighter
red  - pen
blue - pencil
blue - highlighter
blue - pencil

We are looking to create a report from SharePoint List using SSRS which has following view:

                    red     blue   green
    pen            2       0      1
    marker       0       1      0
    pencil          1       3      0
    highlighter  1       1      1 

We tried Sum but not able to display in single row.

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Sep 3, 2015

I have an SSIS package that imports data from an Excel file, replaces any value in Excel that reads "NULL" to "", then writes the data to a couple of databases.

What I have discovered today, is I have two columns of dates, an admit date and discharge date column, and what I need to do is anywhere I have a null value in the discharge date column, I have to replace it with the value in the admit date column. 

I have searched around online and tried a few things using the Replace funtion in Derived columns but no dice so far. 

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Feb 12, 2014

I want to add $ symbol to column values and convert the column values to western number system

Column values
Dollar
4255
25454
467834

Expected Output:
$ 4,255
$ 25,454
$ 467,834

My Query:
select ID, MAX(Date) Date, SUM(Cost) Dollars, MAX(Funded) Funding from Application

COST is the int datatype and needs to be changed.

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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 6, 2001

hi,

I want to delete duplicate rows in a table, can any one write a sql for doing that...

please help me in this...

urs
Vj

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Apr 6, 2001

Hi folks,

I had tried all the ways u guys given to me, but none seems to be working fine.

Please write a query so that it will solve my problem. My problem is deleting duplicate rows in a table.

Please solve this issue, since it has go to production by tomorrow...

please.

urs
VJ

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Apr 5, 2001

Hi folks,

I need to delete the duplicate rows from a table. How to do that in SQL server 7.0 ? If possible write an example, so that it will be much useful for me..

Thanks for ur help..

rgds,
vJ

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ELIMINATING DUPLICATE ROWS URGENT

Jul 20, 2007

Hi i have a table value which contains
value
-----
a
a
a
b
b
b
c
c
c

Now i need to have the results as

a 1

b 1

c 1


I tried using distinct.But OLEDB returns error that invalid syntax.It doesn't support distinct keyword.Actually i read these table from a file thru OLEDB.Not from a database.Any idea ? Thanks in Advance

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Jul 27, 2007

I have a table in which a non-primary key column has a unique index on it.
If I am inserting a record into this table with a duplicate column value for the indexed column, then what will be the error number of the error in above scenario? OR How could I find this out?
 

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Duplicate Values

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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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


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May 7, 2007

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Aug 26, 1998

We are experiencing a problem at more than one site - it has only
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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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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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Sep 11, 2004

hi all

i want to extract only the duplicate values from a table
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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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Apr 29, 2015

I have one table with two columns, GUID and PID and another table with three columns, GUID, LastName, and FirstName. For each unique PID, I need to find the PID's that have more than one GUID and then match that with their respective FirstName and LastName from the other table.

Table1

GUID PID
GUID1 PID1
GUID1 PID1
GUID1 PID1
GUID2 PID1
GUID3 PID2
GUID3 PID2
GUID3 PID2

Table2

GUID LastName FirstName
GUID1 Mulder Fox
GUID2 Scully Dana
GUID3 Skinner Walter

So I'm looking for a result like:

PID1 GUID 1 Mulder Fox
----- GUID 2 Scully Dana

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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,
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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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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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Dec 10, 2013

Is there a way to find duplicate values and get the timediff from the start and end of each duplicate.

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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

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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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