Checking For Duplicates In A Table
Aug 6, 2014
how i can check for duplicate entries for example if a serial number has already been inputted and a user tries to input the same serial number.. how can i get a trigger or some sort to check for duplicates and then prompt that the number has already been entered.
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Jul 23, 2005
Situation:Day 1Table contains 100 items of actions imported via FTP. One of the fieldsin the table can be updated to reflect an assigned unit code.Day 2Actions that may be duplicates of the table from Day 1 (with theexception of the updated assigned unit field) are imported forinclusion in the Table from Day 1.Question- What is the best way to insure that any new items are addedto the table and that no duplicates are added at the sametime?Assistance would be appreciated.
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Jul 2, 2007
I'm wanting to create a if statement that will query a table and check for a duplicate and if there is a duplicate return that uniqueID or if it doesnt find a duplicate continue to add a new record...so here is my question is there a way to run a if statement that will call a function (lets say a function that returns like a bool) and if it finds a duplicate grab that id and store it in a session.....i guess my question is how do i query the database for a record and if found return true if not return false....that is my question....
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Mar 22, 2008
Hi
I have a question i hope someone here will solve my problem.
I need a storedproc for checking the duplicates before updating the data.
here i need to pass four parameters to storedprocedure which must be updated with existing row.
but before updating the values. Storedproc should check for 2 colum values in all rows.
if same combination of colum values is present in any other row then the present rows which we tring to update should not be
updated. Can anyone help me with this.
Thankyou verymuch.
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Mar 29, 2007
Hi
I am having a table called as status ,in that table one field is there i.e. currentstatus.
the rows which are having currentstatus as "ticket closed",i want to move those rows into other table called repository which is having same table structure as status table.
I can do programatically.
but is there any way for every 3 months system has to check and do this action means moving to repository table automatically?
Please help me.
Thanks.
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Nov 2, 2015
INSERT
INTO [Table2Distinct]Â Â Â Â Â Â Â Â
([CLAIM_NUMBER]Â Â Â Â Â Â Â Â
,[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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Jan 9, 2004
I need to check one table while updating another table
suppose i need to check table1's value is whether less then 0 or not
without if condition can i check it with update query?
thank you
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Sep 18, 2007
Hi,
I have a table as follows
Table
{
Category1,
Category2,
Category3
}
I wanted to write a query to check whether the column with the name 'Category3' exists in the table.
Can anyone please let me know how to do this
Best Regards and Thanks
~Mohan Babu
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Jan 7, 2008
Hai,
Can anybody help me to write a script to see whether the table have records, if records are available then delete all those records?
Thanks.
Regards
Kashif Chotu
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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 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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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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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
There is a table with a single column with 75 rows - 50 unique / 25duplicates. How would pull back a list of the rows that have/areduplicates?This is a question that I got in an interview. I didn't get it,obviously....Thanks,Tim
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Sep 19, 2007
I've got two tables, one containing a list of company names(approx 10,000 records), the other containing a list of company employees (approx 30,000 records) joined by the CompanyID column.
I have a third table (approx 700 records) containing new employees to be added to the employee table. Each record in this table has the employees details plus the name of their company.
I want to write a query that will check each row in the third table to see if
a) the employee exists in the Employees table
b) the company exists in the Companies table and
c) the employee is listed under the correct company
The query should also handle any combination of the above. So if the company doesn't exist but the employee does, create the company on the companies table and update the appropriate record on the employees table with the new CompanyID etc. etc.
Oh, forgot to mention. The company names in the third table won't be exactly the same as the ones in the Company table so will need to use CharIndex.
Anybody got any ideas?
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Sep 10, 2007
Hi,
I want to use something like select count(*) from table name = 0; to check whether a table is empty,
is this possible?
Thanks for any info.
Al.
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Sep 23, 2007
Greetings!!
I have a MsAccess db containing a table called Employees which i am transforming to Sql server 2005. Everything is working fine. I am using Foreach File enumerator and uploading the files one by one.
However I now plan to validate the schema of MsAccess before uploading it. For eg: My employee table in msaccess is as follows :
Employees
empId int,
empName varchar(60),
empAge int
Since the files come from different vendor, while looping, i want to perform a check if the empid or empAge are not of type long or are not null. If they are of type smallint,i have no problem.
However if they are larger datatypes than the the ones kept in Sql server, then the file needs to be logged in the db with the reason and moved to the error folder. In short, if the datatypes in access tables are smaller than those in Sqlserver, allow it, otherwise reject it.
THe schema of Sqlserver table is same as of that of Employees in msaccess.
How do I do it.
Thanks ,
Lolsron
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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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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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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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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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May 15, 2015
I have a table with call data (ContactID, Queues Entered, Call Status, Date & Time Stamps etc). Each entry relating to a contact ID goes onto a new row. The first row for a contact is the date and time it is created. It then captures the queue (or queues) it enters before it is answered. Finally, it captures when the call is released (Completed).
I'm trying to link all this data into one single row per contact ID to make it easier to report on.
I started off by using DISTINCT to pull back all of the Contact ID's. I then used a Left Join to pull back the date and time of creation. I created a further Left Join to pull back the first queue that it entered and so on.
When I did this, I started getting duplicates. This is because some calls enter more than one queue.
How can I do this so that it only has one ContactID per row. Also, for the Queue, is there anything I can do to ensure it pulls back the first Queue it enters? (These are time stamped). Subsequently, I would then need to add the second and third queue it enters in other columns. (A call can enter a maximum of 3 queues).
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Mar 26, 2008
I have two tables called A and B and C. Where A and C has the same schema
A contains the following columns and values-------------------------------------------PoId Podate Approved
2 2008-07-07 No 4 2007-05-05 No 5 2005-08-06 Yes 6 2006-07-07 Yes
Table B contains the following columns and values-------------------------------------------------TaskId TableName Fromdate Approved_Status
1 A 7/7/2007 No3 B 2/4/2006 Yes
Now i need to create a stored procedure that should accept the values (Yes/No) from the Approved_Status column in Table B and should look for the same values in the Approved column in Table A. If both values match then the corresponding rows in Table A should be archived in table C which has the same schema as that of Table A. That is the matching columns should get deleted from Table A and shoud be inserted into Table C.
Pls provide me with full stored procedure code.
It is very urgent.
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Dec 31, 2003
I'm familiar with how to check for the existence of a table before dropping it using the following command:
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[xxx]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[xxx]
How does one check for the existence of a temp table (using # syntax) before dropping it? I've tried various flavors of this command and none work. One flavor is
use tempdb
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[#xxx]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[#xxx]
CREATE TABLE #xxx (
NumID INTEGER IDENTITY(1,1),
Exhibitor_Id INTEGER NOT NULL,
Company_Id INTEGER NOT NULL
)
Thanks.
Nick
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Aug 18, 2006
hi
i have over 200 tables with all same column and data type locate all over the server(20)different database. so i have table call Tname to stored all the link like (databasename.dbo.tablename) so my job will call the Tname table to use cursor to insert records. but the problem is there's one or more table's column name K datatype has been modify by someone else. so is it cause the job fail.
if there a way or SQL statment that i can use Table Tname to see which one is missing column name K? and is there a way i can print out all the datatype and len for all the table column k? please help thanks
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Apr 26, 2005
(i am not sure which forum to post this too)
Hi, I imported a table onto my host's server, table_Login which has username password, and userID. userID is Primary Key & identity.
When I had my code do insert of new user, I was getting error the Login.userID doesn't allow null values. Which shouldn't have mattered because userID is an identity.
After making a diagram from Enterprise Manager, I noticed that I have two Login tables (although only one shows in Enterprise Manager's "Table" node view. The second table, which had none of the constraints that my table of the same name which is listed under the "Table" node does; appears to be the table which is being written to by my code.
I can't find this table, Login(dbo), through Enterprise Manager, nor am i sure how to access it through Query Analyzer. Needless to say, I don't like this arrangement. and well tech support for this host seems to leave a lot to be desired.
Anyone know what needs to be done so that I can fix it or fight with tech support to convince them that they should?
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Feb 11, 2006
HiOur product uses MS-SQL Server 2000. One of our customer has 10installations with each installation stroring data in its own database.Now the customer wants to consolidate these databases into one and wealready have plan for that by consolidating one DB at a time. But firstthey want to find how many unique or duplicate entries they have acrossall the 10 databasesAssumptions:1. All the databases reside on the same server. (This is just anassumption, not the real environment at customer site)2. Databases can not be merged before it is found how many unique orduplicate rows exist.Table under consideration:Message(HashID PK,....)# of rows in Message table in each of databases: 1 MillionHere is my question: How can I find how many unique or duplicateentries they have across all the 10 databases. I easily find uniquerows for two databases with a query like this:SELECT COUNT(A.HasID) FROM db1.dbo.Message A LEFT OUTER JOIN ONdb2.dbo.Message B ON A.HashID = B.HashID WHERE B.HashID IS NULLHow can I do this for 10 databases. This will require factorial of 10queries to solve this problem.I will appreciate if someone can provide hint on this.RegardsAK
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