Transact SQL :: Way To Keep Duplicates Without Removing Group By
May 6, 2015
I'm trying to pull records from a source/staging table where there is a duplicate row in it.I don't need that as the requirement is to garbage in /garbage out.when I do that from mart and use joins btw fact and dimensions, Im not getting this duplicate record as Im using distinct/group by. If I removed it, then it returns more than 3000 rows which is not correct. Is there a way I can keep these duplicates without removing group by...Im using correct joins and filters.
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Jun 2, 2015
I have an existing stored table with duplicate rows that I want to delete.Using a cte gives me
WITH CTE AS
(
SELECT rn = ROW_NUMBER()
OVER(
PARTITION BY employeeid, dateofincident, typeid, description
ORDER BY Id ASC), *
FROM dbo.TableName
)
DELETE FROM cte
WHERE rn > 1
This is what I want to do basically. But this is only deleting in my CTE, is there anyway I can update my existing table "TableName" with this, without using temp tables?
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Aug 2, 2000
I need to remove the duplicates from a table. If a record exits 4 times in a
table I need to delete 3 records and retain only one occurance of that.
I need a query to do this.
Can anybody help.
-Rajesh
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Jan 27, 2005
I have a members table and have added an extra few thoushand members to it. Now I need to remove the duplicates.
It doesnt matter which duplicate i remove as long as there are unique email addresses.
so here is the format of the table:
id
email
firstname
lastname
datebirth
if i do a:
SELECT COUNT(DISTINCT Email) AS Expr1
FROM Customer
it returns 21345
and
SELECT Count(Email)
FROM Customer
returns 28987
I can get the unique email addresses into another table by going:
SELECT DISTINCT emailaddress INTO DistinctCustomer
FROM Customer
but this will only return unique email addresses. How do i select distinct email address and all other fields into a new table? or just remove duplicates where email address appears more then once?
Thanks in advance
Tom the SQL beginner
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Jul 20, 2005
HiI have inherited a web app with the following table structure, and need toproduce a table without any duplicates. Email seems like the best uniqueidentifier - so only one of each e-mail address should be in the table.Following http://www.sqlteam.com/item.asp?ItemID=3331 I have been able toget a duplicate count working:select Email, count(*) as UserCountfrom dbo.Membersgroup by Emailhaving count(*) > 1order by UserCount descBut the methods for create a new table without duplicates fail. My code forthe 2nd method is:sp_rename 'Members', 'temp_Members'select distinct *into Membersfrom temp_MembersTable....CREATE TABLE [dbo].[Members] ([MemberID] [int] IDENTITY (1, 1) NOT NULL ,[Username] [varchar] (10) COLLATE Latin1_General_CI_AS NOT NULL ,[Password] [varchar] (10) COLLATE Latin1_General_CI_AS NOT NULL ,[Email] [varchar] (50) COLLATE Latin1_General_CI_AS NOT NULL ,[Title] [varchar] (10) COLLATE Latin1_General_CI_AS NOT NULL ,[FirstName] [varchar] (50) COLLATE Latin1_General_CI_AS NOT NULL ,[Surname] [varchar] (50) COLLATE Latin1_General_CI_AS NOT NULL ,[Address1] [varchar] (35) COLLATE Latin1_General_CI_AS NOT NULL ,[Address2] [varchar] (35) COLLATE Latin1_General_CI_AS NOT NULL ,[City] [varchar] (25) COLLATE Latin1_General_CI_AS NOT NULL ,[Country] [varchar] (25) COLLATE Latin1_General_CI_AS NOT NULL ,[Profession] [varchar] (50) COLLATE Latin1_General_CI_AS NOT NULL ,[Publication] [varchar] (40) COLLATE Latin1_General_CI_AS NOT NULL ,[DateAdded] [smalldatetime] NOT NULL ,[SendMail] [smallint] NOT NULL) ON [PRIMARY]GOThanks B.
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May 19, 2008
Using a sort transform to remove duplicates takes a very long time to execute.Is there a better way to remove duplicate information.
I have alot of duplicates within the data.
I would like to know a better way than using sort transform
Please let me know
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Jan 12, 2006
I found a query on here to find all my duplicates (altered to fit mine)
----
select * from yourtable
where WCD_no in
( select WCD_no from yourtable
group by WCD_no having count(*) > 1 )
----
and it works great. However, when I try and delete one of these, I get the following error message.
"key column is insufficient or incorrect. Too may rows were affected by update"
Any idea on how I can delete these without having to drop the table or anything?
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Sep 27, 2004
Hi There,
I was wondering if someone could help me with the results on this query, at the moment I am getting values repeated and I was wondering if it was possible to have some of the columns grouped, I have tried to have grouping at the end of the query but this still did not group the rows.
Thanks in advance for your answer - Sean
The structure that i'm trying to acheive is like the following:
with each colour having multiple quantitys for each size:
colourdesc| sizedesc | xs | s | m | l
-----------
black |qoh| | 0 | 2 | 0 | 7
-----------
white |qoh| | 0 | 0 | 0 | 0
-----------
!-- query results
+------------+------+------+-----------+--------+---------------+----------+
| qoh | size | shop | style | colour | colourdesc | sizedesc |
+------------+------+------+-----------+--------+---------------+----------+
| 0000000007 | 6 | 1 | 10475RIB1 | 2 | BLACK | L |
| 0000000000 | 6 | 1 | 10475RIB1 | 36 | CORRECTOR6771 | L |
| 0000000000 | 6 | 1 | 10475RIB1 | 15 | SPEARMINT6581 | L |
| 0000000000 | 6 | 1 | 10475RIB1 | 6 | WHITE | L |
| 0000000007 | 5 | 1 | 10475RIB1 | 2 | BLACK | M |
| 0000000000 | 5 | 1 | 10475RIB1 | 36 | CORRECTOR6771 | M |
| 0000000000 | 5 | 1 | 10475RIB1 | 18 | MERINGUE4016 | M |
| 0000000000 | 5 | 1 | 10475RIB1 | 6 | WHITE | M |
| 0000000002 | 4 | 1 | 10475RIB1 | 2 | BLACK | S |
+------------+------+------+-----------+--------+---------------+----------+
!--- query
select qoh
, shopsales.size, shopsales.shop, shopsales.style, shopsales.colour, co.colourdesc, sz.sizedesc
from shopsales
inner
join shops
on shopsales.shop = shops.shop
inner
join colours co
on shopsales.style = co.style
and shopsales.colour = co.colour
inner
join sizes sz
on shopsales.style = sz.style
and shopsales.size = sz.size
where shopsales.shop = 1
and shopsales.style = '10475RIB1'
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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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Jul 5, 2007
I have Data like below
TableA
Col1 Col2 Col3
1 'Test One' 4/7/2007
1 'Test One-1' 4/7/2007
2 'Test' 4/7/2007
3 'Test Three' 4/7/2007
3 'Test Three-1' 4/7/2007
3 'Test Three-2' 4/7/2007
I need to delete the duplicate records[Latest record has to be remaining like that] from above table. i need the out put like below
Col1 Col2 Col3
1 'Test One-1' 4/7/2007
2 'Test' 4/7/2007
3 'Test Three-2' 4/7/2007
If any body know the solution please help me.
Regards
Hanu
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Jan 3, 2008
Hi, I'm in the midst of an Access 2003 to SQL server 2000 upsizing project and have come across a table on Sql Server that has a field that looks like it's supposed to be the PK but it contains duplicates. What I'd like to do is to have a cursor start at the first value and increment the next value by 1. Could someone explain how I'd go about this?
Many thanks,
Peter
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May 18, 2012
I have a very large table that can contain up 3 to 5 duplicate records. Every month around 100,000 new records come in. Sometimes it's an ammended record, other times is just duplicated by error.
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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Jun 4, 2014
I have table like this and I need to remove the duplicates selecting the Min Date
IDDate Alloc ProdWater Tub Cas
3752011-10-10 00:00:00.00000014.70
3752011-10-11 00:00:00.00000014.70
3232014-04-24 00:00:00.000000352555.7
3232014-04-26 00:00:00.000000352555.7
3562014-04-01 00:00:00.000000318.8471.1
3562014-04-02 00:00:00.000000318.8471.1
3562014-04-03 00:00:00.000000318.8471.1
3562014-04-04 00:00:00.000000318.8471.1
3232014-05-20 00:00:00.000000649.1976.9
3232014-05-21 00:00:00.000000649.1976.9
3232014-05-22 00:00:00.000000649.1976.9
I would like my result set to be like this:
3752011-10-10 00:00:00.00000014.70
3232014-04-24 00:00:00.000000352555.7
3562014-04-01 00:00:00.000000318.8471.1
3232014-05-20 00:00:00.000000649.1976.9
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Mar 17, 2008
-- declared variables
declare @database_name varchar(100), @table_name varchar(100), @primary_key_field varchar(100)
declare @list varchar(8000)
-- set values to variables
set @list = ''
set @database_name = 'data200802_dan'
set @table_name = 'other02'
set @primary_key_field = 'callid'
use database
select @list = @list + column_name + ', '
from information_schema.columns
where table_name = @table_name --table name
and column_name != @primary_key_field --unique identifier
select @list = substring(@list, 1, len(rtrim(@list)) - 1)
--above 5 lines btw came from a helper in the msdn forum. thanks
SELECT DISTINCT @list
INTO '#' + @table_name
FROM @table_name
@table_name + ':'
IF (SELECT COUNT(*) FROM @database_name + '.dbo.' + @table_name) = 0
BEGIN
INSERT INTO
@database_name + '.dbo.' + @table_name + '(' + @list + ')'
SELECT
@list
FROM
'#' + @table_name
END
ELSE
BEGIN
DELETE @database_name + '.dbo.' + @table_name +' ( ' + @list + ')'
GOTO @table_name
END
DROP TABLE '#' + @table_name
the query above is basically.. selecting all the fields from a table in database W/OUT their primary key. then putting them in a temp table.. delete all the records in the original table. then paste the records from the temp table into the original table.
is there a way for this to work? i don't know how to use the variables w/ this script. please help me correcting this query..
this is for removing duplicates btw. thanks!
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Dec 20, 2013
I have a query which finds duplicate spec_items linked to a work order. What I want to do it remove the duplicates (and in some cases there will be more than one) leaving only the record with the highest [sr.id]
select sr.id, sr.linked_to_worknumber, sr.spec_checklist_id from spec_checklist_remind sr inner join spec_checklist_remind sc on sc.linked_to_worknumber = sr.linked_to_worknumber
group by sr.id,sr.linked_to_worknumber, sr.spec_checklist_id
Having sr.spec_checklist_id = 30 and count(*)>1
order by sr.linked_to_worknumber
Sample of query results:
idlinked_to_worknumberspec_checklist_id
18323IP-DN-03377430
24229IP-DN-03377430
18294IP-DN-03380830
28027IP-DN-03380830
18295IP-DN-03381030
19924IP-DN-03381030
In the 3 cases, I would want to retain only records with ids 24229,28027 and 19924.
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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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May 22, 2008
I am quite upto the limit now. My query below shows duplicates (I mean the drivers) evenif I group them -
select ltrim(rtrim(supplier.name)) Company, c.fore, c.name, count(c.linkid) [Total Responses],
CASE WHEN round(AVG(CONVERT(float(3), csr.driver_comm)), 1) > 10 THEN 10 ELSE round(AVG(CONVERT(float(3), csr.driver_comm)), 1)
END AS [Driver Communication]
from supplier inner join contact c on supplier.id = c.linkid
inner join csr on csr.tourcode = supplier.code
inner join booking on csr.bin = booking.id
where supplier.tid = 301
group by supplier.name, csr.bin, c.name, c.fore
order by 1
Output:
A L S Travel.....DavidDraper.....4.....7
A L S Travel.....AndrewScott.....16.....10
A L S Travel.....KeathK.....8.....10
A L S Travel.....DavidDraper.....8.....8.5
A L S Travel.....KeathK.....4.....10
A L S Travel.....PaulHammond.....4.....7
A L S Travel.....YanFaczynski.....8.....7
A L S Travel.....YanFaczynski.....4.....10
A L S Travel.....JohnGay.....8.....10
A L S Travel.....YanFaczynski.....12.....3
Please save me... Someone...
TIA,
Krishna
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Nov 12, 2003
I am making a website where users go to a page that lists every Program in their area. The first time the page loads they see all the Programs, then then can filter it down with drop down lists. I have everything working except for the Category because some programs have more than one category. The select is working good but I get duplicates.
Here it is:
SELECT DISTINCT
p.ProgramID,
p.ProgramName,
p.ProgramCity,
p.ProgramState,
p.ProgramCountyID,
p.ProgramHours,
p.ProgramContactName,
p.ProgramPhone,
p.ProgramEmail,
p.ProgramGrades,
p.ProgramTransportation,
pc.ProgramID,
pc.CategoryID
FROM
Programs p,
ProgramCategories pc
WHERE
p.ProgramCountyID IS NOT NULL AND
p.ProgramCity IS NOT NULL AND
p.ProgramHours IS NOT NULL AND
p.ProgramGrades IS NOT NULL AND
p.ProgramTransportation IS NOT NULL AND
p.ProgramID = pc.ProgramID AND
pc.CategoryID IS NOT NULL
GROUP BY
p.ProgramID
ORDER BY
p.ProgramName ASC
When I have just p.ProgramID in the GROUP BY clause, I get the error:
"column name" is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
But when I put all the column names in the GROUP BY clause, I still get duplicates. What can I do to stop this. When the user selects a category the pc.CategoryID IS NOT NULL changes to pc.CategoryID = 3 (or whatever they select) and everything works the way its supposed to. I just want each individual program to show only once when the page first loads.
Thanks for your time
Dave
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Dec 10, 2007
I'm packaging SQL 2005 Express as part of the installer for a custom program. The installer works fine and everything runs fine, but I don't want users to see the sql server > configuration tools start menu group and start playing around with settings.
Is there a command line option to not create the start menu group that anyone knows about, or another way to have the installer not create the icons?
Thanks,
Michael
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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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Jun 8, 2015
I am doing some audit and i have below query, how can i get rid of duplicates from the below query any T SQL to get rid of duplicates...
I am using SP_Who2 and sql server Audit for auditing all data happening on sql server databases and dumping them to tables Audit_DBAudit abd Audit_sp_who2 and from then i am trying to get data which is not repeating/duplicate ...
SELECT
A.ProgramName
,a.HostName,[Server_principal_name],[Server_instance_name],[Database_name],[Object_name],F.Statement
FROM Audit_DBAudit as F
Join [Audit_sp_who2] AS a
on LTRIM(RTRIM(F.server_principal_name))=LTRIM(RTRIM(A.Login))
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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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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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Jul 27, 2015
How would you differentiate duplicates in a table without deleting.
I have a table name ANGEL that contains duplicate value and i want to append a letter V to the duplicates instead of deleting them.
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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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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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Jul 15, 2015
After parsing unformatted XML file, we are loading XML in formatted for into a SQL table rows, so that SSIS can read it and load it to DW tables.
We have a flag column in the above table, which gets updated after each row is extracted successfully by the Procedure(cursor inside Proc) used in SSIS, but cursor inside Procedure is taking 16 hours to load 100k xml source files, if we remove cursor and use bulk load then it takes only 1.5 Hrs. but with bulk load we cannot update the flags.
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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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Feb 11, 2014
I setup SQL Server 2012 on Windows Server 2012 with the service accounts in the local Administrator group, but now that I'd like to remove the accounts from this group I'm finding they don't have the appropriate access to the network storage. notes on setting the per-service SID's for SQL (SQL Engine, Analysis Services, Reporting Services, and Agent Service) so they can read the Data, Log, and TempDB mount points?
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May 14, 2015
declare @error int, @rowcount int
select @rowcount = COUNT(1) FROM STG_BCDR;
while @rowcount > 0
begin
BEGIN TRAN Deletion
[code]....
Above code i try to delete records batch by batch to avoid table locking at BCDR table.total records in this BCDR table is 40,000 records. However I run the code at execution plan, the BCDR table still clustered index scan which means that the locking still happend.
If i change the delete top (5000)...... to delete top (5).... then thre is clustered index seek, which is good..The problem here is each time only delete top 5 records which is means it will realy take very long time to remove those data.
how to cater the situation inorder for me to delete those huge data without table locking happend. If table locking happend , then other user will not be able to access this table at the same time.
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May 21, 2015
Inside of stored procedure you have the code
create table #datatable (id int,
name varchar(100),
email varchar(10),
phone varchar(10),
cellphone varchar(10),
none varchar(10)
);
insert into #datatable
exec ('select *
from datatable
where id = 1')
select * from #datatable
I still want to retrieve the data and present it in the software's presentation layer but I still want to remove the temp table in order to reduce performance issue etc.
If I paste the code DROP
TABLE #datatable after
insert into #datatable
exec ('select *
from datatable
where id = 1')
Does it gonna work to present the data in the presentation layer after removing the temp table?
The goal is to retrieve the data from a stored procedure and present it in the software's presentation layer and I still need to remove the temptable after using it because I will use the SP many time in production phase.
[URL]
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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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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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