Identifying Duplicates - Find Where 2 Or More Records Have Same Rank

Sep 26, 2014

I have this query below that I created to do a count, but I don't think this is what I needed.

I need to find the duplicates. Example, if

CLI_ID1 12345 has 4 CLIP records, each CLIP record should have a different CLIP rank. I need to find scenarios where 2 (or more) of the CLIP records have the same CLIP RANK. If there are duplicate CLIP_RANKs within the same CLI_ID,

Select Distinct
cli_id1, count(clip_rank) countrank
FROM impact.dbo.CLI
LEFT JOIN impact.dbo.CLIO ON CLI.CLI_ID1 = CLIO.clio_id1

left join
impact.dbo.clip ON cli_id1 = clip_id1
Where (clio_trm = '' or clio_trm = NULL or clio_trm is null)
group by cli_id1
order by cli_id1

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T-SQL (SS2K8) :: Rank Duplicates But Only Rows Involved In Duplicates?

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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Identifying Duplicates

Sep 5, 2000

Hi,
I need to delete ONLY the duplicate rows from a table..Can anyone suggest me a way to do that thing..i used the query..

"Delete from <TableName> where SlNo IN ( Select SlNo from <TableName> group
by SlNO having Count(*) > 1)"

The resultant is all the original rows also getting deleted with the duplicates..anyone please help me out..

Thank you in advance
Rani

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Identifying Duplicates In A Table

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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Converting Duplicates Records Into Non Duplicates?

Jan 26, 2015

Is there a query or a way to convert duplicates value in a column to non duplicates.

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Identifying Differences Between Two Records

Feb 8, 2007

I am trying to test some data handling between two different versions of an application.

I have restored the database schema twice, once as DB_old and once as DB_new.

I import a transaction using the new application into DB_new and I import the SAME transaction into the DB_old using the old version of application.

I then have to eyeball the data in SQL Query Analyzer to try to identify problems where the fields have received different values.

I have done this by running a select statement twice telling it to use both of the databases and then viewing it in two grids. There are a lot of columns so I have to do a lot of scrolling across the screen to do the comparison, and since the view is in two separate grids I have to hop back and forth and click the scroll bars, etc.

It seems like there has to be a better way. I don't suppose there is a way to lock the two grids so they both scroll together is there?

I was thinking maybe I could insert each of the selects into a temporary table and then do some kind of comparison to identify which values were different in each column. Some of the columns will have differences, like the timestamp, but if I could somehow identify which columns were different then I could eyeball them to identify which of those were okay to be different and which of them were actually bugs from the changed application version.

I have no idea how to identify those individual columns with different data values or even where to start.

Just so you understand better what I am doing now here is the query I am running that I then eyeball:
use DB_new
select * from claim where claim_id = 35144
use DB_old
select * from claim where claim_id = 35144

Thanks for any ideas.

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SQL Server 2012 :: Series Of Records - Identifying Discrepancies

Mar 17, 2014

I have a series of records based on empid where I want to identify the empid that may have discrepancies listed. I have some empids that are listed more than once and have different DOB's. In the example I am trying to Create a DOB_ERROR column and either say yes if the DOB doesn't match the other records in the file with the same empid.

SELECT
Empid,
DOB,
CASE WHEN DOB = DOB THEN 'No' ELSE 'Yes' END AS DOB_ERROR,
City,
St,
Gender
FROM Emp
WHERE EMPID IN

('12335', '23456', '545432','231245')

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T-SQL (SS2K8) :: Identifying Potential Duplicate Records In A Given Table?

Oct 8, 2015

any useful SQL Queries that might be used to identify lists of potential duplicate records in a table?

For example I have Client Database that includes a table dbo.Clients. This table contains various columns which could be used to identify possible duplicate records, such as Surname | Forenames | DateOfBirth | NINumber | PostalCode etc. . The data contained in these columns is not always exactly the same due to differences caused by user data entry; so some records may have missing data from some of the columns and there could be spelling differences too. Like the following examples:

1 | Smith | John Raymond | NULL | NI990946B | SW12 8TQ
2 | Smith | John | 06/03/1967 | NULL | SW12 8TQ
3 | Smith | Jon Raymond | 06/03/1967 | NI 99 09 46 B | SW12 8TQ

The problem is that whilst it is easy for a human being to review these 3 entries and conclude that they are most likely the same Client entered in to the database 3 times; I cannot find a reliable way of identifying them using a SQL Query.

I've considered using some sort of concatenation to a new column, minus white space and then using a "WHERE column_name LIKE pattern" query, but so far I can't get anything to work well enough. Fuzzy Logic maybe?

the results would produce a grid something like this for the example above:

ID | Surname | Forenames | DuplicateID | DupSurname | DupForenames
1 | Smith | John Raymond | 2 | Smith | John
1 | Smith | John Raymond | 3 | Smith | Jon Raymond
9 | Brown | Peter David | 343 | Brown | Pete D
next batch of duplicates etc etc . . . .

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How Do I Find Duplicates In A Table.

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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Query To Find Duplicates

Jul 19, 2004

Hi

I am trying to find when a name has been entered more than once into 1 database table.

I'm currently doing something like this (can't remember exactly, not at work)


SELECT COUNT(*) AS Cnt, Name
FROM tblTable
GROUP BY Name
ORDER BY Cnt Desc

This brings back all the Names in the database and tells me which are duplicates but I want to just have the results of the duplicate values and not the single values.

Hope you can help.

Thanks

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How Do I Find The Duplicates In A Table

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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SQL FIND DUPLICATES IN TABLE

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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Help On Find Duplicates And Delete Procedure

Aug 8, 2007

Hi everybody I need help on finding duplicates and deleting the duplicate record depending on name and fname , deleting the duplicates and leaving only the first one.

my PERSON table is this below:

ID name fname ownerid id2

1 a b
2 c c
3 e f
4 a b 1 10
5 c c 2 11

I have this query below that returns records 1 and 4 and 2 and 5 since they have the same name and fname

select * from ( Select name ,fname, count(1) as cnt from PERSON group by
name,Fname ) where cnt > 1


ID name fname ownerid id2

1 a b
4 a b 1 10

2 c c
5 c c 2 11


With this result I need to delete the second record of each group but update the first records with the ownerid and id2 of the second record that would be deleted... I don't know how to proceed with this..

thanks
alex

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Transact SQL :: How To Find Duplicates For Different Fields

Oct 27, 2015

I have a table that has Serial numbers and MSDSID numbers and many other fields in the table.

What I need to figure out is if the table contains a distinct Serial number with different MSDSIDs.

So If I have in the table

Serial          MSDSID          Date          Size...
001                 20            1/1/2015        5
002                 21            1/1/2015        3
001                 22            2/1/2015        1
003                 21            3/1/2015        1
004                 23            1/15/2015      5
003                 22            1/20/2015      6
004                 23            2/21/2015      5
002                 21            4/25/2015      4

I would like the results to show:

Serial            Count
001                  2           the count is 2 because Serial 001 has an MSDSID of 20 and 22
002                  1           the count is 1 because Serial 002 only has MSDSID 21
003                  2           the count is 2 because Serial 003 has an MSDSID of 21 and 22
004                  1           the count is 1 because Serial 002 only has MSDSID 23

It would be even better if the results just showed where the count is greater than 1.

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Transact SQL :: How To Find Duplicates For Multiple Fields

Oct 26, 2015

I have a table that exists of Serial, MSDSID and other fields.

What I need to check is to see if there are Serial numbers that multiple MSDSID numbers.

So if I have

Serial          MSDSID
001                23
002                24
003                25
004                23
005                26
006                24

The results would be

Serial             MSDSID           Count
001                23                   2
004                23                   2
002                24                   2
006                24                   2

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Transact SQL :: Find Duplicates Within Existing Query

Nov 18, 2015

I need to make a selection on join datasets with 2 conditions and populate the results in another dataset(Report).It is working with the fist condition "AccountingTypeCharacteristicCodeId = 3"...

INSERT INTO SurveyInterface.tblLoadISFNotification (OperatingEntityNumber, SDDS, SurveyCodeId, QuestionnaireTypeCodeId, ReferencePeriod, DataReplacementIndicator, PrecontactFlag, SampledUnitPriority)
SELECT ISF.OperatingEntityNumber
       ,[SDDS]
       ,[SurveyCodeId]
       ,[QuestionnaireTypeCodeId]
       ,[ReferencePeriod]
       ,[DataReplacementIndicator]
      
[code]....

Know I also want to add in that new dataset(report) all the duplicates of concatenated variables

ISF.OperatingEntityNumber/ISF.QuestionnaireTypeCodeId 
GROUP BY ISF.OperatingEntityNumber, ISF.QuestionnaireTypeCodeId

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SQL Server 2008 :: How To Find Duplicates In A Table As Per Particular Column

Nov 2, 2015

I am having a main table and temptable.

Every sunday, new data will be loaded from temptable to main table. I have to make sure that, duplicates does not get loaded from temptable to maintable.

For example, if last sunday a record gets loaded from temp to main. If this sunday also the same record is present then it means that is a duplicate.

The duplicate is decided on below scenario

select 'CodeChanges: ', count(*) from CodeChanges a, CodeChanges_Temp b
where a.AccountNumber = b.AccountNumber and
a.HexaNumber = b.HexaNumber and
a.HexaEffDate = b.HexaEffDate and
a.HexaId = b.HexaId and

[Code] ...

Yesterday (Sunday) , data from temp got loaded onto maintable but with duplicates.

There is a log which just displays number of duplicates.

Yesterday the log displayed 8 duplicates found. I need to find out the 8 duplicates which got loaded yesterday and delete it off from main table.

There is a column in both tables which is 'creation date and time'. Every Sunday when the load happens this column will have that day's date .

Now i need to find out what are all the duplicates which got loaded on this sunday.

The total rows in temp table is : 363
No of duplicates present is : 8

I used below query to find out the duplicates but it is returning all the 363 rows from the maintable instead of the 8 duplicates.

Select 'CodeChanges: ', * from CodeChanges a where
exists
( Select 1 from CodeChanges_Temp b where
a.HexaNumber = b.HexaNumber and
a.HexaEffDate = b.HexaEffDate and

[Code] ...

Need finding the duplicate records which has creation date time as '2015-11-01 00:00:00.000' and all the above columns mentioned in the query matches.

Example

Few colums only metioned below

creationdateandtime HexaNumber HexaCode
1. 1987-10-01 00:00:00.000 5 3
2. 2015-11-01 00:00:00.000 5 3

So here the second record is duplicate. This is what I am trying to find.

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Need To Find Instances Of Duplicates Within A Column; Joining 2 Tables.

Aug 22, 2007

My basic situation is this - I ONLY want duplicates, so the oppositeof DISTINCT:I have two tables. Ordinarily, Table1ColumnA corresponds in a one toone ratio with Table2ColumnB through a shared variable. So if I queryTableB using the shared variable, there really should only be onrecord returned. In essence, if I run this and return TWO rows, it isvery bad:select * from TableB where SharedVariable = 1234I know how to join the tables on a single record to see if this is thecase with one record, but I need to find out how many, among possiblymillions of records this affects.Every record in Table1ColumnA (and also the shared variable) will beunique. There is another column in Table1 (I'll call itTable1ColumnC) that will be duplicated if the record in Table2 is aduplicate, so I am trying to use that to filter my results in Table1.I am looking to see how many from Table1 map to DUPLICATE instances inTable2.I need to be able to say, in effect, "how many unique records inTable1ColumnA that have a duplicate in Table1ColumnC also have aduplicate in Table2ColumnB?"Thanks if anyone can help!-- aknoch

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Displaying All Records Of Duplicates

Jul 9, 2007

HI all I have this table below and i need to get records from col1 >1 and col2 >1

col1 col2 language
1 a s
1 b p
3 c e
3 c f

SELECT col1, col2, language COUNT(*) AS Expr1
FROM table1
GROUP BY col1, col2
HAVING (COUNT(*) > 1)

with the above query it gives me this

col1 col2 expr1
3 c 2

the language column is not displayed what i want is not the exact count but all the records which is duplicate and must resemble the result below

col1 col2 expr1 language
3 c 2 e
3 c 2 f

I need the result above inorder to normalize the table and bring out the language part into another table

thanks

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T-SQL (SS2K8) :: Find Matching Phone Of Person Based On Relation Type - Duplicates

Aug 11, 2014

I have a patient record and emergency contact information. I need to find duplicate phone numbers in emergency contact table based on relationship type (RelationType0 between emergency contact and patient. For example, if patient was a child and has mother listed twice with same number, I need to filter these records. The case would be true if there was a father listed, in any cases there should be one father or one mother listed for patient regardless. The link between patient and emergency contact is person_gu. If two siblings linked to same person_gu, there should be still one emergency contact listed.

Below is the schema structure:

Person_Info: PersonID, Person Info contains everyone (patient, vistor, Emergecy contact) First and last names
Patient_Info: PatientID, table contains patient ID and other information
Patient_PersonRelation: Person_ID, patientID, RelationType
Address: Contains address of all person and patient (key PersonID)
Phone: Contains phone # of everyone (key is personID)

The goal to find matching phone for same person based on relationship type (If siblings, then only list one record for parent because the matching phones are not duplicates).

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Jan 26, 2015

I ran this query to populate a field with random numbers but it keeps populating with some duplicate records. how I can remove the duplicates?

UPDATE APRFIL
SET ALTATH = CONVERT(int, RAND(CHECKSUM(NEWID())) * 10000);

Below are sample output that I need the dupes not show. The table already exist and its sql 2008

155957
155957
155968
155974
155976
15599
155990
155997
155997
156005
156008

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Transact SQL :: Comparing Records - Finding Matches / Duplicates

Nov 20, 2015

I have this 40,000,000 rows table... I am trying to clean this 'Contacts' table since I know there are a lot of duplicates.

At first, I wanted to get a count of how many there are.

I need to compare records where these fields are matched:

MATCHED: (email, firstname) but not MATCH: (lastname, phone, mobile).
MATCHED: (email, firstname, mobile)
But not MATCH: (lastname, phone)
MATCHED: (email, firstname, lastname)
But not MATCH: (phone, mobile)

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Duplicates Again! UNION Join - Remove Records With Column Diff.

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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Looping Thru Records To Find Related Records

Oct 31, 2007

Hi, I have had this problem for a while and have not been able solve it.

What im looking at doing is looping thru my patient table and trying to organise the patients in to there admission sequence, so when patient "A" comes in and is treated at my hospital and is discharged and admitted to another Hospital within one day then patient "A" will get a code of 1 being there first admission.

then if patient "A" is admitted again but there admission date is greater than one day they get a code of 2 being for there second admission but will need to loop thru table looking for other admissions and discharges.

The table name is Adm_disc_Match_tbl

Basically what i have 4 fields.
Index_key = which is the patient common link (text)
ur_episode = this wil change for each Hospital (text)
Admission_datetime = patient admission date and time (datetime)
Discharge_datetime = patient discharge date and time (datetime)

example of data


Code: ( text )
Index_key,ur_episode,Admission_datetime,discharge_ datetime
HERBERT-7/1929,513884-1686900,4/07/2006 10:58,17/07/2006 13:37
HERBERT-7/1929,C023092-1698859,17/07/2006 13:20,24/07/2006 0:30
ELSIE-5/1916,G148445-1720874,8/08/2006 11:00,30/08/2006 10:00
STANISLAWA-3/1918 ,G119981-1720045,8/08/2006 13:01,22/08/2006 12:13
FREDA-11/1925,183772-1998910,27/03/2007 9:53,3/04/2007 11:06
FREDA-11/1925,G147858-2007408,3/04/2007 10:49,26/04/2007 12:39
FREDA-11/1925,183772-2037727,28/04/2007 17:05,9/05/2007 11:41
FREDA-11/1925,G147858-2052082,9/05/2007 12:00,25/05/2007 11:17


If anyone could help it would be much appreciated.

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Transact SQL :: Inserting Records Into Table 2 From Table 1 To Avoid Duplicates

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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SQL Server 2008 :: Loop Through Date Time Records To Find A Match From Multiple Other Date Time Records?

Aug 5, 2015

I'm looking for a way of taking a query which returns a set of date time fields (probable maximum of 20 rows) and looping through each value to see if it exists in a separate table.

E.g.

Query 1

Select ID, Person, ProposedEvent, DayField, TimeField
from MyOptions
where person = 'me'

Table

Select Person, ExistingEvent, DayField, TimeField
from MyTimetable
where person ='me'

Loop through Query 1 and if it finds ANY matching Dayfield AND Timefield in Query/Table 2, return the ProposedEvent (just as a message, the loop could stop there), if no match a message saying all is fine can proceed to process form blah blah.

I'm essentially wanting somebody to select a bunch of events in a form, query 1 then finds all the days and times those events happen and check that none of them exist in the MyTimetable table.

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How To Find Last 10 Records Using T-SQL?

Sep 7, 2001

Hi all,

Anybody would tell me how can I find last 10 records in a table using T-SQL?

Thank you very much!

Lee

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Find Same Records With Same ID

Aug 1, 2007

Hello,

Having trouble describing my problem……

I have the table below, and I am trying to retrieve TileIDs that have the same ModelIDs.

ModelID TileID
HP DL380 G3 120v Dual15400
HP DL380 G3 120v Dual15400
HP DL380 G3 120v Dual15400
HP DL380 G3 120v Dual15400
HP DL380 G3 120v Dual15400
HP DL380 G3 120v Dual15400
Sun SF 280R 120v 15401
Sun SF 280R 120v 15401
Sun SF 280R 120v 15401
Sun SF 280R 120v 15401
Lantronix MSS4 15401



So TileID ‘15400’ would be a keeper, since all ModelIDs are the same.

Any help would be appreciated.

Thanks

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Jun 24, 2008

Hello friends,
plza help meeeeeeee

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How To Find This Records?.

Mar 4, 2008

tbl_user Data
user Updatedate
Bill 08/02/2006
Bill 08/02/2008
Peter 11/02/2008
Liz 01/02/2008
sam 01/02/2007





select * from
where Updatedate < getdate()-30 days and (not in Updatedate > getdate())


i want to get all records

output i am looking....
user Updatedate
Liz 01/02/2008
sam 01/02/2007

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Feb 19, 2013

I have a large table of customers. I would like to add a column that contains an integer, unique to that customer. The trick is that this file contains many duplicate customers, so I want the duplicates to all have the same number between them.the numbers dont have to be sequential or anything, just like customers having the same one.

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Dec 3, 2007

Hi All, I am trying to find records when searchProductCount = 2 AND when searchProductCount < 2 BUT productID not in (select pid from TableB) ... I have the query below ... but is there any other better way to do this?
TableB has IDs: 100, 700 ...etc
eg: searchProduct ID is 50,100
-- means returns everything when we found ALL productID (50,100) from TableA, count =2
Select productName, productID from TableA where searchProductCount = 2 AND productID IN (50,100)
union all
-- when not all productID found in TableA, we only return productsID from TableA which ID found in TableB, count < 2
Select productName, productID from TableA where searchProductCount < 2 and productID IN (select pid from TableB) -- in this case, pid found in TableB from searchProductID will be 100
------------------------------------------------------------------
it comes out there are duplicates results (when first query is valid, we union all second query, so we have duplicates records). How can we eliminate the duplicates? Or is there better way to acheive this without using union all?

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Jan 12, 2000

Hi,

Does anybody know the SQL query to find the duplicate records?

Many Thanks in advance!

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