Duplicate Rows

Jun 29, 2001

Hi,
I have a table and this is what i did to get the desired result

Select A.col1,count(A.col1)
from Tab1
group by col1
having count(A.Col1) > 1

i tried this - but it didnot worked - it returned col1 as blanks -
Select A.col1,B.Col2,count(A.col1)
from Tab1 A, Tab2 B
where A.col1 = B.col1
group by A.col1 , b.col2
having count(A.Col1) > 1

As I was looking for all the rows that are apperaing more than once.

Now - The problem -

I have to join this table to another table Tab2 to get the other details.
My Tab2 is a table from where I have to pull the Customer DEtails like name,address etc.
How should I write this query?
Any thinuhts?
TIA

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Select Distinct Rows From Duplicate Rows....

Nov 28, 2007

Dear Gurus,I have table with following entriesTable name = CustomerName Weight------------ -----------Sanjeev 85Sanjeev 75Rajeev 80Rajeev 45Sandy 35Sandy 30Harry 15Harry 45I need a output as followName Weight------------ -----------Sanjeev 85Rajeev 80Sandy 30Harry 45ORName Weight------------ -----------Sanjeev 75Rajeev 45Sandy 35Harry 15i.e. only distinct Name should display with only one value of Weight.I tried with 'group by' on Name column but it shows me all rows.Could anyone help me for above.Thanking in Advance.RegardsSanjeevJoin Bytes!

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DUPLICATE ROWS

Jun 25, 2001

I used the following select statement to get duplicate records on Case_number column

select cases.distinct case_link, cases.case_number
from cases
group by case_link
having case_number > 1

I got the error message that

"'cases.warrant_number' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
AND
cases.case_number' is invalid in the HAVING clause because it is not contained in either an aggregate function or the GROUP BY clause.


Any idea on a better statement to use. THANKS FOR YOUR HELP!

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Duplicate Rows?

Jul 20, 2006

Hi,

i wanna know, how can i check if i have duplicate rows in my table?

thanks

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Duplicate Rows

May 16, 2007

Hi. I'm a SQL Server newbie, very experienced with Access, developing an ASP.NET database editor web app. I query the database with a statement more or less in the following form:

SELECT organisation.OrgID, organisation.Name, organisation.whatever FROM services INNER JOIN servicegrouping ON services.serviceID=servicegrouping.serviceID INNER JOIN organisations ON servicegrouping.OrgID = organisations.OrgID WHERE services.service=x OR services.service=y

In other words, I have a database of organisations. The services offered by the organisations are in a separate table, and I only want to return organisations that offer services X or Y.

Okay, now if I did this in Access, this query would return just one record for each organisation that meets the condition, unless I was to include a field from the services table in the SELECT clause, in which case of course I would get one record for each organisation and unique service offered.

But in MS SQL, the query returns duplicate rows if there is more than service offered by the organisation that meets the WHERE condition (=x or =y). Why is this and what do I need to do to my SQL statement to ensure I only get unique rows?

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Duplicate Rows

Feb 6, 2008

Hi,

I've a query which gets a set of data from multiple tables -

select *
FROM A
inner JOIN q
ON (RIGHT(q.name,CHARINDEX('-',REVERSE(q.name))-1)= a.id)
inner JOIN t
ON (t.id = q.id)
inner JOIN s
ON (q.name = s.name )
inner join l
on (s.name = l.name
and t.name = l.name)

WHERE A.id = 764
and s.name = '764'

I get repeated # of rows for each id. I've some 136 rows for each q.id ( there are 6 q.ids and hence I get 816 rows instead of 136) These 136 rows are actually divided among thse q.ids as

id=5, 4 rows
id=6, 8 rows
id=7, 24 rows
id=8, 40 rows
id=10, 60 rows
total=136 rows

Let me know what I'm missing here

Thanks for your help!
Subha

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SQL Combining Duplicate Rows, Please HELP.

Feb 1, 2008

Hello,
I have a question, what does a statement look like that finds the duplicate rows and combines them,
I have a table named PRODUCTS in it 3 columbs Cost, Stock, Part_number.
I need to find all Part_numbers that dublicate, Combine the rows into 1 & combine (sum, add) their stock together is the new row & take an avarerage of their cost and use it as cost in the new row where they combine.
Please help me, I am stalled. Looked all over the internet & could not find anything, I really need this for a project I can not finish.
I have the following SQL statement:
SELECT part_number,
COUNT(part_number) AS NumOccurrences
FROM Products
GROUP BY Part_number
HAVING COUNT(part_number) > 1
 

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Deleting Duplicate Rows

May 6, 2008

I have a csv file that I need to import daily into a SQL Server 2005 table. Much of the table contents could just be overwritten with the new csv file, however there are a set of Rows within the table that need to be appended to , rather than overwritten. 
There is no Primary Key in the csv file that can be used.  
I'm not sure this is the best approach, but what I have been trying to do, is append the entire csv file to the existing table, and then go back and delete the duplicates.
When I run the Delete, it does delete the majority of the records, but leaves a couple hundred behind. The number left behind varies with each run, can't seem to identify a pattern here. Running the Delete a second time does clean up the rows left behind in the first execution of the Delete, and gives the result I want.
Any thoughts as to why this needs to be run twice? Or is a better approach available?
Here is my code -
SELECT [Pkg ID], [Elm (s)], [Type Name (s)], [End Exec Date], [End Exec Time], dupcount=count(*)
INTO temppkgactions
FROM pkgactions
GROUP BY [Pkg ID], [Elm (s)], [Type Name (s)], [End Exec Date], [End Exec Time]HAVING count(*) > 1
 
DELETE TOP (SELECT COUNT(*) -1 FROM dbo.temppkgactions WHERE dupcount > 1 )
FROM dbo.pkgactions
DROP TABLE temppkgactions
 
Thanks
 
 

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Urgent - Duplicate Rows...

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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Eliminating Duplicate Rows

Aug 9, 2000

Hi,

I have a table with four columns. like id,lastname,
firstname,acctname. I have duplicate values for the three columns other
than id column. like

ID FirstNameLastname Acctname
1 john hopkins jh
2 john hopkins Jh
3 david webb dw
4 david webb dw
5 david webb dw
6 Dan Kennedy DK

I want to eliminate the duplicate rows. id can be any one of them.
Can any one suggest me with a query by which i can do this.
Thanks in advance
Mohan

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Delete Duplicate Rows

Jun 25, 2000

I have a table which looks as follow:

field1 field2 field3 field4 field5 ......
A B C A X ......
A B C B Y ......
A B C C Z ......
A B C A Y ......
. . . . . ......

I want to delete all the rows except one row. Anybody can help?

Thank you very much.

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Jan 25, 2000

I have a large table that consists of the columns zip, state, city, county. The primary key "zip" has duplicates but the rows are unique.
How do I filter out only the duplicate zips.
Randy Garland

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Jan 20, 2000

How do you delete duplicate rows in a table so only one row is left in the table, using T-SQL.

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Can We Somehow Mark Duplicate Rows ?

Sep 14, 1999

Hi,
I am encountering a problem. There are lots of duplicate rows in the cobol flat files (due to improper data entry and missing columns values )from where I am transforming data to sql 7. 0 tables using DTS. After transformation , can I some how mark the duplicate rows ? it is not for the purpose of eliminating them, but to enter the missing values and make all the rows complete and unique.
I have the transformed table as a temporary table. Can I add a column like 'status' etc.. and have the column values marked '1' for the repeating rows etc....
Can anyone suggest 'any' possible way of implementing it ?
Thanx
Nisha

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Deleting Duplicate Rows

Feb 11, 1999

Hai

I have problem in deleting duplicate rows. I have a identity column in my table, if I try to use correlatted sub query with Delete command it gives error.

The other problem I have is I have a date column in my table and update that column with current date and time. If use a query to fetch a records on a particular day , it does not return any rows

select * from rates where ch_date >='02/11/99' and ch_date<='02/11/99'

If I use convert also there is some other problems. Is there any way to force date checkings to be done excluding time.



Thanks

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DELETE DUPLICATE ROWS

Mar 30, 1999

CAN ANYBODY REPLY FOLLOWING QUESTIONS. I WANT TO DELETE DUPLICATE ROWS
IN MY TABLE WITHOUT USING TRANSACTION TABLE. AND ONE MORE QUESTION HOW
TO GET YESTERDAY DATE BY USING ISQL WINDOW.



THANKS
JK

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Jul 9, 1998

Hello,

I have a table (mytable) with the following structure

docs int
field1 varchar(20)
......

the information in the table may look like this

docs field1
1 hello
2 hello
3 test
4 test
5 problem
6 problem

The docs column autoincrements and their is a unique constraint on it. The field1 column does not have any constraints on it.

how does on delete the duplicates without deleting both.

I can write a SQL statement to tell me what docs are dups, and what the field1 values are, but I cannot just delete one

Do I write a cursor? or is there an sql statement that would delete just one?

thanks

Steve Power

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Deleting Some Of Duplicate Rows

Nov 17, 1998

This is an imaginary problem while discussing ROWID in ORACLE.

Consider a table without primary key, unique key, uniuqe index.
A row has inserted into the table many times.
I want to delete all but one dulicated rows. With any 'where' clause all rows(duplicated)
will be deleted. In ORACLE i can achieve this using ROWID as follows:

Delete from Table_name
where < all column values >
and ROWID <> ( Select max(rowid) from Table_name where < all column values > )

How can this be achieved in MS SQL Server 6.5 ?

According to Dr. Codd's Golden rules for RDBMS one is that
One should be able to reach each data value in the database by using
table name, row idenfication value and column name.

Does MS SQL Server 6.5 satisfy this requirement ?

Also How many of Dr. Codd's 13 Golden Rules for RDBMS does MS SQL Server 6.5
Satisfy? Which doesn't ?

Any discussion about Codd's Rules is welcome.


- Gunvant Patil
gunvantp@yahoo.com

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Aug 6, 2004

Hi everyone, I'm migrating some information for a client at the moment. They had everything in Excel files and I'm getting them into SQL Server. There are some differences in the way I am storing data and the way they were storing data.

For each client they stored, they had something like
Rel1 Rel2 Rel3
100 101 102

Now, what I have is a seperate row for each of Rel1, Rel2 and Rel3 so I would have 3 seperate rows with identical information except for Rel1. So I would have:
Rel1
100
101
102

So one way I thought of doing it was inserting a new row specifying that the value for Rel2 should be stored in Rel1 and for the next row that the value for Rel3 should be stored in Rel1.

Now, I am able to do this but SQL Server inserts an extra row will the NULL value in Rel1. Does anyone know why this would be happening? I think what it is doing is finding a NULL value in Rel3 after creating the two extra rows and is inserting that NULL. So I think I need to check for NULLs and not allow it to create a new row if, say, Rel3 is NULL.

Any pointers are gladly welcome. (I know it's complicated )

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Dec 12, 2007

Hello I am fairly new to SQL and having spent much time over the manual I decided to ask for help. So here's my deal.

I've got a query with 5 tables that I join together


Code:

SELECT * FROM Map
INNER JOIN ThreatCategory
INNER JOIN Threat ON
ThreatCategory.threatCategoryID = Threat.threatCategoryID
INNER JOIN Threat_Map
ON Threat.threatID = Threat_Map.threatID
ON Map.mapID = Threat_Map.mapID
LEFT JOIN person on map.contentPersonID = person.personID
WHERE (((DATEDIFF(dd, Map.dataAcquisitionDate, GETDATE()) > map.goodForDays) and (map.expired = '1'))
or (map.expired = '3'))



The problem is the table Threat_Map is a many to many mapping between the Map table and the Threat table. Eg) A map can have more than one threat and a threat can have more than one map. I know this is not the best way to have a database set up but its out of my hands as to changing the database. What I need help with is this.

My application checks as to whether a certain field in the Map table is expired or out of date (as in the query). If so it gets some required information from the other tables using those joins. However, I don't want to get information for the same Map.mapID that's expired twice. I don't really care which ThreatID I get from the Threat_Map table I just need to get one of them to meet the objects standards. However, so far this seemingly simple task has eluded me. I'd like to do this in SQL. Is there perhaps a way to do this. If not I guess I'll just take care of it in the application.

-Alex

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Jan 13, 2005

Suppose that we have the following rows in a MSSQL table :


1administrateur1NULLNULL
2administrateur2NULLNULL
1administrateur1NULLNULL
2administrateur2NULLNULL



How to remove duplicates (leave only the 2 first rows) ?

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Oct 17, 2005

Hi,
I have the following query to select duplicate rows from the table. How can i delete them with out using temp table.

select UserName, Title, Name, ColWidth, Sequence
from table1 (nolock))
Group by UserName, Title, Name, ColWidth, Sequence
Having count(*) >1


Any help would be greately appreciated.
Thanks

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Dec 3, 2005

Hi,

Please give the DML to SELECT the rows avoiding the duplicate rows. Since there is a text column in the table, I couldn't use aggregate function, group by (OR) DISTINCT for processing.

Table :

create table test(col1 int, col2 text)
go
insert into test values(1, 'abc')
go
insert into test values(2, 'abc')
go
insert into test values(2, 'abc')
go
insert into test values(4, 'dbc')
go

Please advise,

Thanks,
MiraJ

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Feb 27, 2014

In my database, I have a table "tbl_c_extract" that consists of 4 columns that look the following. I'm looking at a daily batch of around 4000 records, of which 150 are likely to be duplicates.

Emp_No varchar(255), Proprietary_ID varchar(255), LeaveDateActual datetime
123456, E123456, 2014-09-27 00:00:00.000
213832, E123456, 2099-12-31 00:00:00.000
213836, E123456, 2014-01-31 00:00:00.000

In the example above, I need to remove 2 of the entries, leaving only the one that with the maximum leave date. In this case, those without a leave date have the 2099 entry.

Using CTE works exactly as I want it to, however SQL Server Agent doesn't seem to like the use of CTE..

Code:
WITH CTE (Proprietary_ID, LeaveDate, RN)
AS
(
SELECT Proprietary_ID, LeaveDate,
ROW_NUMBER() OVER(PARTITION BY Proprietary_ID ORDER BY Proprietary_ID, LeaveDate) AS RN
FROM tbl_c_extract
)
DELETE
FROM CTE
WHERE RN > 1

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Jan 14, 2004

Hi,

I have some duplicate rows in a table. I didnt define any primary key or unique key on the table.

I can get unique rows using DISTINCT, but i want to fetch only the duplicated rows and also i want to delete the duplicated rows.

How can i do it?

Please help me.....

Thanx in Advance

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Select Duplicate Rows

Feb 11, 2004

I get a tabseparated textfile with data every friday. Faulty rows are to be returned to the source.

Double rows are considered a fault. How do I select all double rows?

I join the data later on with four columns so if these columns are alike the rows are considered identical even if other columns are not. Ie:

A, B, C, D, 12, 34, 48, 76
A, B, C, D, 23, 45, 56, 99

These two rows are considered alike since I join on A+B+C+D.

I'd like to select ALL double rows and insert them into a separate table that I can return to the source. Does anyone have an idea how to do this?

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Feb 20, 2004

Hi, I need to insert rows into table1 from table2 and table3 but I don't want to insert repeated combinations of col2, col3. So, table1 has the primary key col2, col3.

This the table1:

create table table1(
col1 int not null,
col2 int not null,
col3 int not null,
constraint PK_table1 primary key (col2, col3)
)

This is my "insert" code:

INSERT INTO table1
SELECT table2.col1,table2.col2, table3.col3
FROM table2, table3
WHERE table2.col1 = table3.col1

Wich conditions shoud i add to this code?

Thanks.

fmilano.

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Apr 14, 2004

this may sound like a weird one, but i need to create duplicates of all rows that satisfy a condition.

using asp, i am able to select rows from a databate using a recordset, only to insert it straight back into the database, thus assigning it a new unique id.

but is there any one to perform this action just using sql?

thanks,

goran.

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Concat Rows Help Without Duplicate

Jun 11, 2008

Hi there, I'm trying to concat the results of a select statement into a single row separated by commas without duplicates. The query and output is something like this:

SELECT Specification FROM Cars WHERE Model = 112

Which would return something like:

Specification
------------------

Model 1
Model 2
Model 2
Model 4


What I'd like is these to be combined into a single row such as:

Specification
------------------

Model 1, Model 2, Model 4

Kamran Shahid
Sr. Software Engineer(MCSD.Net)
www.netprosys.com

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Jun 18, 2008

How to delete duplicate records from table ? Is there any query for that ?
I am using SQL 2005.

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Delete Duplicate Rows

Jan 27, 2014

declare @a1 table
(id int not null identity(1,1),
phone decimal(18,0),
adress nvarchar(100))
insert @a1
(phone,adress)

[Code] ....

id phone address
----------- --------------------------------------- ----------------------------------------------------------------------------------------------------
1 111 new york
2 111 new york
3 111 new york
4 222 maxico
5 222 mexico

select phone,count(phone) as say from @a1 group by phone having count(phone)>1

phone say
--------------------------------------- -----------
111 3
222 2

How can I remove duplicate phone. For example

after delete
select*from @a1
select*from @a1

id phone address
----------- --------------------------------------- ----------------------------------------------------------------------------------------------------
1 111 new york
4 222 maxico

I wrote this to show for example in my real table have 50000 rows and 1751 duplicate rows.

[URL] .....

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How Do You Delete Duplicate Rows......

Jan 18, 2006

How do you delete duplicate rows when there are constraints or like in professional terms as we say "Referential Integrity".

Mr.Madhivanan i hope you remember me. Because it is after all purpose that binds us all together...purpose...it is inevitable Mr.Madhivanan.

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Get Duplicate Value Rows - Complicate

Mar 6, 2008

Hi,

I need some help to solve the following query.

Consider the following table
NAME OTHERNAME
---------------------
APPLE-----AA
APPLE-----AA
APPLE-----AA
ORANGE-----OO
ORANGE-----O1
GRAPE-----G1
GRAPE-----G1
GRAPE-----G2
GRAPE-----G3
MANGO-----M1
MANGO-----M2
MANGO-----M3

OUTPUT should be
----------------
ORANGE-----OO
ORANGE-----O1
GRAPE-----G1
GRAPE-----G2
GRAPE-----G3
MANGO-----M1
MANGO-----M2
MANGO-----M3

Advance Thanks for your help.
Sri

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