Remove Duplicates On A Table

Jan 29, 2008

Hi All
I have the dbo.OperatingHour It has many duplicates and I want to remove duplicates permanently
The statement below works but when I open the table there are no changes

Insert into OperatingHour(Weekdays, Wednesdays, Fridays,Saturdays, [Sundays/Public Holidays])
(SELECT DISTINCT Weekdays, Wednesdays, Fridays,Saturdays, [Sundays/Public Holidays] FROM OperatingHour)

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Is There A Way To Remove Table Rows Duplicates

Dec 3, 2006

If we want to remove the duplicate row and leave only one row instead of 2 or 3 rows for example with the same column values.

2/ The same question but when all the columns of the row are duplicate except the id field.
Thanks a lot.

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Sep 1, 2015

I have table with columns as ID, DupeID1, DupeID2. ID column is unique. DupeID1 and DupeID2 -- the combination should only be there once. I don't want reverse combination of duplicates, i.e. DupeID2, DupeID1 in the table. How can I delete the reverse duplicates from this table?

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Jan 9, 2008

I have a query which gives the following output, How can i get a output like this:

QUERY

COL1COL2COL3
A1AAGG
A1BBHH
A1CCJJ
B1DDKK
B1EELL
B1FFMM

OUTPUT

COL1COL2COL3
A1AAGG
BBHH
CCJJ
B1DDKK
EELL
FFMM

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May 24, 2007

Welcome,how can I alter following table in order to reduce neighbouringduplicates (symbol, position, quantity, price).Nr Symbol Position QuantityPrice Date1. wz9999b 1 1.02500.0 2007-05-09 08:09:42.6532. wz9999b 2 12.02500.0 2007-05-09 08:09:42.6533. wz9999b 1 100.02590.0 2007-05-10 15:47:04.1404. PZ0008VX 1 2280.8842090.55000000000022007-05-1612:43:12.4035. PZ0008VX 1 2280.8842102.05000000000022007-05-1612:45:27.4206. wz9999b 1 0.0012500.0 2007-05-18 09:47:16.0337. wz9999b 1 0.0012500.0 2007-05-18 09:47:53.2708. wz9999b 1 1.01.0 2007-05-22 12:35:07.8939. PZ0008VX 1 2280.8842102.05000000000022007-05-2409:38:26.16010. PZ0008VX 1 2280.8842102.05000000000022007-05-2409:38:38.80011. wz9999b 1 0.001 2500.02007-05-24 12:35:07.20712 wz9999b 1 0.002 2500.02007-05-24 12:35:14.98713. wz9999b 1 0.001 2500.02007-05-24 12:38:07.207In the result set I would like to get the rows number 6 and 10.Any suggestions??

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Remove Duplicates Within Pipeline

Sep 27, 2006

I have a situation where we get XML files sent daily that need uploading into SQL Server tables, but the source system producing these files sometimes generates duplicate records in the file. The tricky part is, that the record isn't entirely duplicated. What I mean, is that if I look for duplicates by grouping the key columns, having count(*) > 1, I find which ones are duplicates, but when I inspect the data on these duplicates, the other details in the remaining columns may differ. So our rule is: pick the first record, toss the rest of the duplicates.

Because we don't sort on any columns during the import, the first record kept of the duplicates is arbitrary. Again, we can't tell at this point which of the duplicated records is more correct. Someday down the road, we will do this research.

Now, I need to know the most efficient way to accomplish this in SSIS. If it makes it easier, I could just discard all the duplicates, since the number of them is so small.

If the source were a relational table, I could use a SQL statement to filter the records to remove the duplicates, but since the source is an XML file, I don't know how to filter these out in the pipeline, since the file has to be aggregated to search for dups.

Thanks

Kory

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Can Someone Proofread My 'remove Duplicates' Script?

Oct 2, 2006

DELETE
FROM tblContacts
WHERE tblContacts.ID IN(
SELECT F.ID
FROM tblContacts AS F
WHERE Exists (
SELECT email, Count(ID)
FROM tblContacts
WHERE tblContacts.email = F.email
GROUP BY tblContacts.email
HAVING Count(tblContacts.ID) > 1
)
)
AND tblContacts.ID NOT IN(
SELECT Min(ID)
FROM tblContacts AS F
WHERE Exists (
SELECT email, Count(ID)
FROM tblContacts
WHERE tblContacts.email = F.email
GROUP BY tblContacts.email
HAVING Count(tblContacts.ID) > 1
)
GROUP BY email
)



I readily admit that I've shamelessly copied 'n pasted this from a tutorial and then taken a stab at tweaking it for my own ends. But I really don't understand what it's doing.

Really, all I want to know is that it will remove records with duplicate email fields. But I could also do with confirming - looking at the "SELECT Min(ID)" bit - does that mean that if it finds a duplicate, it'll delete the latest-added one? And if so, that changing it to remove the earliest-added one is simply a case of changing MIN to MAX?


Thanks :)

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SQL Server 2008 :: Remove Duplicates From Query?

Oct 6, 2015

I am working with a bunch of records that have duplicates on the Persid and the intPercentID where there are duplicates I want to remove when I stick them in the temp table, I tried join on tempo table and doing not exists but still inserts, so now I am trying a merge but same thing. how can I keep duplicates from being inserted in the temp table. I made a cursor as well but its slow as heck, but it does work. trying better ways.

Create table #TempStr (STRId int not null Identity(1,1) primary key, Persid int, percentId int, dtCreated datetime, CreatedBy int)

Create table #NewStr (STRId int, Persid int, percentId int, dtCreated datetime, CreatedBy int)

INSERT #TempStr (Persid, percentId, dtCreated, CreatedBy)
select intPersonnelID, intPercentID, dtSubmitted, intSubmittedBy from tblSTR
whereintpercentId in (61,62) group by intPercentID, intPersonnelID, dtSubmitted, intSubmittedBy
UNION ALL

[code]....

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Power Pivot :: 2 Tables - Remove Duplicates

Jul 13, 2015

I have 2 tables below:

Table 1:

Product No Quantity
A 1
B 2
C 3

Table 2:

Product No Grade Quantity
A Good
  A Normal
  A Bad
  B Good
  B Bad
  C Good
C Normal
C Bad

In Table 2, Product No divided by Grade. I want to lookup the Quantity from Table 1 to Table 2. The same Product No will have 1 value, the other value is 0. The result for Column Quantity should be like this:

Table 2:

Product No Grade Quantity
A Good 1
A Normal 0
A Bad 0
B Good 2
B Bad 0
C Good 3
C Normal 0
C Bad 0

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SQL Server 2014 :: Remove Duplicates In Opposite Columns

Jan 22, 2015

I have a table containing the following data:

LinkingIDID1 ID2
166202180659253178
166202253178180659
166334180380253179
166334253179180380
166342180380180659
166342180659180380
166582253179258643
166582258643253179
264052258642258643
264052258643258642
264502258643258663
264502258643259562

Within the LinkingID, there are duplicates in ID1 and ID2 but just in opposite columns. I have been trying to figure out a way to remove these set based. It doesn't matter which duplicate is removed. Essentially these are just endpoints and I don't care which side they are on. The solution must recognize the duplicates and not just remove based on every 2nd row.

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Aug 11, 2015

I have a bunch of contacts that I've scored how well their names match to other contacts in the same business. I can programmatically figure out how to parse the results, but would like to know how to do this via SQL. My problem is for Business_fk 968976 I have 7 contacts. In the end I should have 4 contacts based on name match. For the business key listed Gerardo Lopez is in the ContactScore table twice for Contact keys 7355719 and 57028145. I then have two rows like so:

PossibleBusinessContactMatch_pk BusinessContact_fk Business_fk BusinessContactMatch_fk MatchTypeCode MatchScore MatchRank FirstName LastName Phone Email
------------------------------- ------------------ ----------- ----------------------- ------------- ----------- ----------- -------------------------------------------------- -------------------------------------------------- ---------- --------------------------------------------------------------------------------------------------------------------------------
1772960 57028145 968976 7355719 C 46 1 GERARDO I LOPEZ 8162214000
838834 7355719 968976 57028145 C 50 1 GERARDO

Each reference each other, and 2 is a good case, a more difficult case would have key 1 listed 10 times showing a ContactMatch_fk of 2 - 11, and then Contact_fk 2 listed 10 times with a ContactMatch_fk of 1, 3-11.I know 57028145 maps to 7355719 from the first row in the ContactScore table, so when Contact_fk of 7355719 comes up I should be able to skip it and not process that match. Hopefully that makes sense. Anyway here is the test data:

IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[ContactScore]') AND type in (N'U'))
DROP TABLE [dbo].[ContactScore];
GO
CREATE TABLE [dbo].[ContactScore]
(
[ContactScore_pk]INT NOT NULL,
[Contact_fk]INT NOT NULL,

[code]..

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Apr 23, 2015

How can i perform this task with ssis  OR TRANSACT SQL? I HAVE THESE ROWS WITH THE NEXT DATA, I want to take just the valid one, BUT I HAVE A LOT OF COMBINATIONS AS following names, it can be animals, things or personal names

GABRIEL OBANDO --CORRECT
GABRIEL OVANDO
Gavriel OVANDO
gAbriel OBANDO
GABRIE OBANDO
Gabri OBONDA
MANAGUA --CORRECT
NANAGUA
NAMAGUA

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Oct 15, 2006

Im working through the MS example of "removeDuplicates". I cant seem to figure out how to add custom property for input column.

I added the helper method:
private static void AddIsKeyCustomPropertyToInput(IDTSInput90 input, object value)
{
IDTSCustomProperty90 isKey = input.CustomPropertyCollection.New();
isKey.Name = "IsKey";
isKey.Value = value;
}
I call it from:
public override void ProvideComponentProperties()
{
//...
AddIsKeyCustomPropertyToInput(input, false);
//...
}
public override void ReinitializeMetaData()
{
IDTSInput90 input = ComponentMetaData.InputCollection[0];
if (input.CustomPropertyCollection.Count == 0)
{
AddIsKeyCustomPropertyToInput(input, false);
}
// ...
}

However when I deployed it and added the component to SSIS package - I cant see the Custom Column "IsKey" in the input column properties window.
What am I missing - please help

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Sep 9, 2004

Hello All,

We all were new at one point.... any help is appreciated.

Objective:

Combining two 49,000 row tables and remove records where there is only 1 column difference. (keeping the specified column value removing the one with a blank.)

Reason:

I have 2 people going through a list, coding a specific column with a single letter value. They both have different progress on each sheet. Hence I am trying to UNION them and have a result of their combined efforts without duplicates.

My progress/where I'm stuck:

Here is my first query/union:

SELECT * FROM [Eds table]
UNION SELECT * FROM [Vickis table];

As shown above, I have unioned these 2 tables and my results removed th obvious whole record duplicates, but since 1 column is different on these, a union without criteria considers them unique.....

an example of duplicates that I must remove are as follows:

142301 - Product 5000 - 150# - S (Keep)
142031 - Product 5000 - 150# - "" <--- Blank (Remove)

I am trying to run another query on my first query results so I don't mess my first query up. Here it is:

SELECT DISTINCT [Prod #], [Prod Name], [Prod Description], [Product Type]
FROM [Combined Tables]
WHERE [Product Type]<>" ";


Please Help! Thank you in advance.

--------------------

5 minutes away from pulling my last one!

BaldNAskewed

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Jun 23, 2015

I had Excel file input & import to DB Table by using Data flow in SSIS.but it had duplicates so I dont use the Dupe Records

So I planned like below:

Method 1:
Here OLEDB Destination are Good Records(Without Duplicates)
        OLEDB Destination are Not Good Records(only Duplicates)
                    or
 Method :2
If I add a column(GOOD_RECORD) in DB Table and Should I update '1' for  top 1 record (for Good Record)  and remaining as '0' for other Records (for Dups)latter I utilize Through flag of GOOD_RECORD

 i.e.,,  select * from DB_TABLE where GOOD_RECORD='1' .

I think that Method :2 Advisable for Performance/flexible but Here How can I update by using SSIS(Data flow)    ????

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Jun 22, 2015

I have some duplicate values for my query results, about 200 duplicates out of 30000 rows.  Of these 200 duplicates I want to keep the ones that have a higher value for... 'UpdatedBatchID'. 

SELECT
    IR.Id                            as 'ID'
  , CAST(IR.Priority as varchar)    as 'Priority'
  , IRSupportGroupDN.DisplayName    as 'Support Group'
  , DATEADD(MI,DATEDIFF(mi,GETUTCDATE(),GETDATE()),IR.CreatedDate)    as 'Created Date'
  , DATEADD(MI,DATEDIFF(mi,GETUTCDATE(),GETDATE()),IR.ResolvedDate)    as 'Resolved Date'
  , SLOConfig.DisplayName            as 'SLO'
  , DATEADD(MI,DATEDIFF(mi,GETUTCDATE(),GETDATE()),SLOFact.TargetEndDate)    as 'SLO Target'
  , SLOStatusDN.DisplayName            as 'SLO Status'
  , SLOMetric.DisplayName            as 'SLO Metric'
  , SLOFact.UpdatedBatchId            as 'UpdatedBatchID'

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Feb 29, 2008

What happens when you add the Ignore Case flag into the mix?

I'm having a hell of a time - I'm dealing with an SCD situation using TableDifference component and I have both existing dimensions and new data coming in, each go through identical Case-Insensitive/Sort with remove duplicates, but I'm getting identical new and deleted records detected - I think because of ordering issues. I'm still trying to whittle the test case down, but I think data from all around the records I'm investigating seems to get sorted in between them, so I'm having trouble getting a small test case built.

I think the mixed case data is the root of the problem, and I think the design is bad, but before I go back to the technical lead, I need to understand enough to show that you cannot take two pipelines sorted and de-duped case-insensitively and then do a case-sensitive table difference operation.

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Aug 5, 2014

I managed to transpose rows into columns.

;WITH
ctePreAgg AS
(
select top 500 act_reference "ActivityRef",
row_number() over (partition by act_reference order by act_reference) as rowno,
t3.s_initials "Initials"
from mytablestuff
order by act_reference

[code]...

But what I would love to do next is take each of the above rows - and return the initials either in one column with all the nulls and duplicate values removed, separated by a comma ..

ref, initials
Ag-4xYS
Ag-6xYS,BL
Ap-1xKW
At-2x SAS,CW
At-3x SAS,CW

OR the above but using variable number of columns based on the maximum number of different initials for each row.this is not strictly required, but maybe neater for further work on the view

ref, init1,init2
Ag-4xYS
Ag-6xYS,BL
Ap-1xKW
At-2x SAS,CW
At-3x SAS,CW

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Nov 2, 2015

INSERT
INTO [Table2Distinct]        
([CLAIM_NUMBER]        
,[ACCIDENT_DATE]

[code]....

I used the above query and it still inserts all the duplicate records. What is wrong with my statement?

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Oct 22, 2014

I have a table with 22 million Business records. I can see that there are duplicates when I group by BusinessName and Address and Phone. I'd like to place only the duplicates into a table, with a ranking, oldest business key gets a ranking of 1.

As a bonus I'd like each group to have a distinct group name (although not necessary, just want to know how to do this)

Later after I run more verifications to make sure these are not referenced elsewhere I'll delete everything with a matchRank > 1 out of the main Business table.

DROP TABLE [dbo].[TestBusiness];
GO
CREATE TABLE [dbo].[TestBusiness](
[Business_pk] INT IDENTITY(1,1) NOT NULL,
[BusinessName] VARCHAR (200) NOT NULL,
[Address] VARCHAR(MAX) NOT NULL,

[code]....

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Apr 15, 2008

Hi,
 I have table which stores the fund name and its data. We get quarterly information from the fund co. Suppose if the user wants to add a fund thats not in our database we let then add a ClientFundId and a FundName. But may be after sometime the fund company may add that fund in the next quarter.. So how do i get rid of Duplicated Data..
In the ClientFundId column we can a 9 letter Aplhanumeric or a 5 letter character but if the fund co.. provides those values the 5 letter characters are stored in Ticker column and the 9 letter words are stored in Cusip column.. So i just wrote this query hoping i could retrieve the duplicate values but it didnt list any..but i found one this is my query..
 Select
FundId,
Cusip,
Ticker,
ClientFundId,
FundName,
ShortName
From Fund
Where

ClientFundId = Ticker
or
ClientFundId = Cusip
 Any help will appreciated
Thanks
Karen

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Mar 24, 2004

hi, what is a good way to kill the duplicates from a table. when i say killing duplicated, i mean killing all the rows for the repeated row.

WorkTempID ItemNo Seq
100196 RTP-22 1
100197 RTP-22 2
100198 RTP-22 3
100199 RTP-22 3
100200 RTP-22 4
100201 RTP-22 4
100202 RTP-22 5
100203 RTP-22 5

********************************************************
see how Seq 3, 4 and 5 are repeated? so for the output i want.

WorkTempID ItemNoSeq
100196RTP-221
100197RTP-222
********************************************************

i DO NOT want this as the output. i already know how to achive this using DISTINCT keyword

WorkTempID ItemNoSeq
100196RTP-221
100197RTP-222
100198RTP-223
100200RTP-224
100203RTP-225

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Dec 11, 1999

does someone have a querry to display the duplicate records in a table.

Table:
zipcode dma

My data upload is failing because there is a primary key on zipcode and the source data (42k records) has about 50 duplicate zipcode records in it. It is possible that there is a unique combo of zipcode / dma but I need to identify the duplicate records to determine that.

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May 28, 2008

I have this script bellow which does what it is supposed to. However it only outputs the cust_id. I want it to show all the columns in the table. How would I do this?



SELECT cust_id
FROM cust_table
WHERE cust_name in ('Billy','John') and rownum < 100
GROUP BY cust_id
HAVING COUNT(*) > 1;

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Mar 21, 2014

The database has Name,Email, and skill. Though the name is distinct it is repeated as it has different skills. I would like to remove duplicate names and add the corresponding skill to the only one row.

From the stored procedure, combining 3 tables I got the output as:

NameemaildepartmentSkill
ArunemailidTech teamTechnical
ArunemailidTech teamLeadership
ArunemailidTech teamDecision Making
BinayemailidMarketingTechnical
BinayemailidMarketingDecision Making

I would like to remove the duplicate Name fields and combine the Skill in a single row as other fields are same.

So the output should be

NameemaildepartmentSkill
ArunemailidTech teamTechnical, Leadership, Decision Making
BinayemailidMarketingTechnical,Decision Making

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Aug 6, 2014

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Aug 7, 2014

Im trying to look for duplicates in a table field.. field name is alphanumericCol and table is a user defined table...This is my trigger:

ALTER TRIGGER [dbo].[DUPLICATES]
ON [dbo].[AMGR_User_Fields_Tbl]

FOR INSERT, UPDATE
AS
DECLARE @Alphanumericcol VARCHAR (750)

-- This trigger has been created to check that duplicate rows are not inserted into table.

-- Check if row exists
SELECT @Alphanumericcol
FROM Inserted i, AMGR_User_Fields_Tbl t
WHERE t.AlphaNumericCol = i.AlphaNumericCol
AND t.Client_Id = i.Client_Id
-- (@Alphanumericcol = 1)
-- Display Error and then Rollback transaction
BEGIN
RAISERROR ('This row already exists in the table', 16, 1)
ROLLBACK TRANSACTION
END

The result i get is, if i input a duplicate number it fills in a null in the field so my question is how do i get it to tell me its duplicate and let me insert a new one

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Mar 11, 2006

I need help flagging duplicate records in ome tables I have.For example if I have Table1 which conatins Field1, Field2 and Field3like belowField1 Field2 Field3 Field4Paul 18 Null NullPaul 18 Null NullJohn 19 Null NullHow would I;1. put a 'Y' in Field3 to mark the two records which are duplicates.2. put a 'Y' in Field4 to mark ONLY ONE of the duplicate records.Regards,Ciarán

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Jul 20, 2005

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May 18, 2012

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Is it possible to keep the latest record dumped into the table and delete the others? Does SQL track the order of the data being dropped into the table?

The layout would look like this. There are 10-15 other columns in the table where adjustments can also be made.

Lease# Year Month Production
12345 2008 10 1,231
12345 2008 10 1,250
12345 2008 10 1,250

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Aug 13, 2013

Table Design --> Componenet (table name)

ID.
Country ID
BT-ID
Component
Activation

I need to delete the duplicate values from Componenet table

ID CountryID BT-ID Componenet Activation
A3CD GD58 TR77 RX 1
BER2 GD58 TR77 RX 1
XEW7 GD58 TR77 MX 1
O4T4 GD58 TR77 MX 1
PE78 GD58 TR77 GX 1

Expected Output

ID CountryID BT-ID Componenet Activation
A3CD GD58 TR77 RX 1
XEW7 GD58 TR77 MX 1
PE78 GD58 TR77 GX 1

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Jun 15, 2007

How do I only select rows with duplicate dates for each person (id)? (The actual table has approximately 13000 rows with approximately 3000 unique ids)

p_key id date pulse
--------------------------------------
1 32 5/25/2006 80
2 32 5/25/2006 85
3 32 4/26/2006 81
4 32 6/15/2006 82
5 15 1/20/2006 75
6 15 3/25/2006 80
7 15 3/25/2006 83

Result table I am looking for:
p_key id date pulse
------------------------------------
1 32 5/25/2006 80
2 32 5/25/2006 85
6 15 3/25/2006 80
7 15 3/25/2006 83

Thanks.

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Jul 23, 2005

Hiya everyone,I have two tables in SQL 2000. I would like to append the contents ofTableA to TableB.Table A has around 1.1 Million Records.Table B has around 1 Million Reocords.Basically TableA has all of the data held in TableB plus 100,000additional records. I would only like to import or append these newadditional records. I have a unique index already setup on Table B.Any ideas pretty pretty please?Paul.Ps. (Have been messing around with DTS but get a unique violation error- Which is kinda what I want I guess, but would like SQL to ignore theerror and only copy the new data - if only)

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