I have inherited a web app with the following table structure, and need to
produce a table without any duplicates. Email seems like the best unique
identifier - 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 to
get a duplicate count working:
select Email, count(*) as UserCount
from dbo.Members
group by Email
having count(*) > 1
order by UserCount desc
But the methods for create a new table without duplicates fail. My code for
the 2nd method is:
sp_rename 'Members', 'temp_Members'
select distinct *
into Members
from temp_Members
Table....
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]
GO
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?
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 -----------
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
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?
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
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.
-- 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..
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
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?
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,
I need some help. I have created a database that looks like the following: FirstName Table link to Main Table. I have created a Stored procedure that looks like this: Create procedure dbo.StoredProcedure ( @FirstName varchar(20) ) Declare FirstNameID int Insert Into Main Table ( FirstName ) Values ( @FirstName ) Select @FirstNameID = Scope_Identity() How could I redesign this to check if a value exists and if it exists then simply use that value instead of creating a new duplicate value?
I have a dilema..... I have a databas eof about 60,000 users and i need to get rid of those users where there is a duplicate email address. I have written an asp utilty that works but is far too taxing on our little server and i thinkk itwill kill it. what it does is for each email address it compares it against all the others.... so for each address it checks against 60,000 other records 60,000 times.... you know what i mean. its pretty phucked.... i tested it on just one record and took about 5mins.
anyway ive been trying to do it in SQL with no luck
i'm trying to get duplicates out of the my database
SELECT COUNT(*) AS Amount, Firstname, surname, Internalextension FROM iac.dbo.sf_profil GROUP BY FirstName, surname, internalextension HAVING COUNT(*) > 1 order by firstname, surname
How do i alter the query just retrieve records which have firstname and lastname which are similar but different extension numbers ?
Hi, This is the query which shows me the duplicates Some of the records have more than one records I would like to know how to delete the extra records so that I will end up with one record per row.
select Pricing_Source, VaR_Identifier, Price_Date, PX_Last, Count(*) as 'count' from tblPricesClean group by Pricing_Source, VaR_Identifier, Price_Date, PX_Last having count(*) > 1 order by count desc
Is there a way to find duplicates in one field? For example my query has person_nbr and for each person_nbr on one day they could have used multiple payer_names. I want to be able to count each person_nbr one time but also I want to group by description(which is the name of the provider) and by payer name to see how many person's that the provider seen with each payer. My problem is that if the person had more than one payer they are counted twice. Is there some type of aggregate function to use the first payer in the list??
With PersonMIA (person_id,person_nbr,first_name,last_name,date_of_birth) as ( select distinct person_id,person_nbr,first_name,last_name,date_of_birth from (select count(*) as countenc,a.person_id,a.person_nbr, a.first_name,a.last_name, a.date_of_birth from person a join patient_encounter b on a.person_id = b.person_id group by a.person_id,a.person_nbr,a.first_name,a.last_name,a.date_of_birth )tmp where tmp.countenc <=1 ) select person_nbr,payer_name,first_name,last_name,description,year(create_timestamp),create_timestamp from ( select distinct c.description,tmp.person_id,tmp.person_nbr,tmp.first_name, tmp.last_name,tmp.date_of_birth,d.payer_name,b.create_timestamp from PersonMIA tmp join person a on a.person_id = tmp.person_id join patient_encounter b on a.person_id = b.person_id join provider_mstr c on b.rendering_provider_id = c.provider_id join person_payer d on tmp.person_id = d.person_id where c.description = 'Leon MD, Enrique' group by c.description,tmp.person_id,tmp.person_nbr,tmp.first_name,tmp.last_name, tmp.date_of_birth,d.payer_name,b.create_timestamp )tmp2 where year(create_timestamp) IN (2005,2006) group by person_nbr,payer_name,first_name,last_name,description,create_timestamp
Hi, I'll see if I can explain this clearly. The query below selects rows from the "hdr_ctl_nbr_status" table if the value in the field "tcn" from that table is found in the table "temp_tcn". I want all fields from the "hdr_ctl_nbr_status" table to be selected BUT only one row. In other words for a tcn with a value "12345678" there are 10 rows returned from the hdr_ctl_nbr_status table, I want only 1. Is there a way I can use SELECT DISTINCT to do this ? I know this usually functions on one or more fields but I want the DISTINCT to be on tcn only BUT return all fields in the query.
Select h.*,'' from hdr_ctl_nbr_status as h WITH (NOLOCK) where h.tcn in (select tcn from temp_tcn)
I have two columns of int data in the a table, as my example data shows below.
I want my data returned to be something like those in #test3, but my question is this, how can I do it without using #test2 and #test3?
By the way, the business requirement doesn't care it's min/max or any ID when one side has duplicated values.
Thanks!
Use tempdb Go
if object_ID ('#test') is not null drop table #test
create table #test (col1 int, col2 int) insert into #test Select 123, 222 union Select 124, 222 union Select 125, 222 union Select 111, 223 union Select 111, 224
if object_ID ('#test2') is not null drop table #test2 create table #test2 (col1 int, col2 int) Insert into #test2 Select distinct col1, min(col2) from #test group by col1
if object_ID ('#test3') is not null drop table #test3 create table #test3 (col1 int, col2 int) Insert into #test3 Select min(col1), col2 from #test2 group by col2
I am attempting to execute the Stored Procedure at the foot of thismessage. The Stored Procedure runs correctly about 1550 times, butreceive the following error three times:Server: Msg 512, Level 16, State 1, Procedure BackFillNetworkHours,Line 68Subquery returned more than 1 value. This is not permitted when thesubquery follows =, !=, <, <= , >, >= or when the subquery is used asan expression.I've done some digging, and the error message is moderatelyself-explanatory.The problem is that there is no Line 68 in the Stored Procedure. It'sthe comment line:-- Need to find out how many hours the employee is scheduled etc.Also, there are no duplicate records in the Employee table nor theWeeklyProfile table. At least I assume so - if the following SQL todetect duplicates is correct!SELECT E.*FROMEmployee Ejoin(select EmployeeIDfromEmployeeGroup by EmployeeIDhaving count(*) > 1) as E2On(E.EmployeeID = E2.EmployeeID)SELECTW.*FROMWeekProfile Wjoin(SelectWeekProfileIDFROMWeekProfileGROUP BYEmployeeID, MondayHours, WeekProfileIDHAVING COUNT(*) > 1) AS W2ONW.WeekProfileID = W2.WeekProfileIDNOTE: In the second statement, I have tried for MondayHours thruFridayHours.Anyone got any ideas? The TableDefs are set up in this thread:<http://groups-beta.google.com/group/comp.databases.ms-sqlserver/browse_frm/thread/fff4ef21e9964ab8/f5ce136923ebffc3?q=teddysnips&rnum=1&hl=en#f5ce136923ebffc3>The Stored Procedure that causes the error is here:--************************************************** ***********CREATE PROCEDURE BackFillNetworkHoursASDECLARE @EmployeeID intDECLARE @TimesheetDate DateTimeDECLARE @NumMinutes intDECLARE @NetworkCode int-- Get the WorkID corresponding to Project Code 2002SELECT@NetworkCode = WorkIDFROM[Work]WHERE(WorkCode = '2002')-- Open a cursor on a SELECT for all Network Support Employees whereany single workday comprises fewer than 7.5 hoursDECLARE TooFewHours CURSOR FORSELECTEmployeeID,CONVERT(CHAR(8), Start, 112) AS TimesheetDate,SUM(NumMins) AS TotalMinsFROM(SELECTTI.EmployeeID,W.WorkCode,TI.Start AS Start,SUM(TI.DurationMins) AS NumMinsFROMTimesheetItem TI LEFT JOIN[Work] W ON TI.WorkID = W.WorkIDWHERE EXISTS(SELECT*FROMEmployee EWHERE((TI.EmployeeID = E.EmployeeID) AND(E.DepartmentID = 2)))GROUP BY TI.EmployeeID, TI.Start, W.WorkCode) AS xGROUP BYEmployeeID,CONVERT(char(8), Start, 112)HAVINGSUM(NumMins) < 450ORDER BYEmployeeID,CONVERT(CHAR(8), Start, 112)-- Get the EmployeeID, Date and Number of Minutes from the cursorOPEN TooFewHoursFETCH NEXT FROM TooFewHours INTO @EmployeeID, @TimesheetDate,@NumMinutesWHILE (@@FETCH_STATUS=0)BEGINDECLARE @NewWorkTime datetimeDECLARE @TimesheetString varchar(50)DECLARE @Duration intDECLARE @RequiredDuration int-- Set the correct date to 08:30 - by default the cast from thecursor's select statement is middaySET @TimesheetString = @TimesheetDate + ' 08:30'SET @NewWorkTime = CAST(@TimesheetString AS Datetime)-- Need to find out how many hours the employee is scheduled to workthat day.SET @RequiredDuration = CASE (DATEPART(dw, @NewWorkTime))WHEN 1 THEN(SELECT CAST((60 * SundayHours) AS int) FROM WeekProfile WHERE(EmployeeID = @EmployeeID))WHEN 2 THEN(SELECT CAST((60 * MondayHours) AS int) FROM WeekProfile WHERE(EmployeeID = @EmployeeID))WHEN 3 THEN(SELECT CAST((60 * TuesdayHours) AS int) FROM WeekProfile WHERE(EmployeeID = @EmployeeID))WHEN 4 THEN(SELECT CAST((60 * WednesdayHours) AS int) FROM WeekProfile WHERE(EmployeeID = @EmployeeID))WHEN 5 THEN(SELECT CAST((60 * ThursdayHours) AS int) FROM WeekProfile WHERE(EmployeeID = @EmployeeID))WHEN 6 THEN(SELECT CAST((60 * FridayHours) AS int) FROM WeekProfile WHERE(EmployeeID = @EmployeeID))WHEN 7 THEN(SELECT CAST((60 * SaturdayHours) AS int) FROM WeekProfile WHERE(EmployeeID = @EmployeeID))ENDIF @NumMinutes < @RequiredDurationBEGIN-- Set the Start for the dummy work block to 08:30 + the number ofminutes the employee has already worked that daySET @NewWorkTime = DateAdd(minute, @NumMinutes, @NewWorkTime)-- Set the duration for the dummy work block to be required durationless the amount they've already workedSET @Duration = @RequiredDuration - @NumMinutes-- Now we have the correct data - insert into table.INSERT INTO TimesheetItem(EmployeeID,Start,DurationMins,WorkID)VALUES(@EmployeeID,@NewWorkTime,@Duration,@NetworkCode)ENDFETCH NEXT FROM TooFewHours INTO @EmployeeID, @TimesheetDate,@NumMinutesENDCLOSE TooFewHoursDEALLOCATE TooFewHoursGO--************************************************** ***********ThanksEdward
I have a table, TEST_TABLE, with 6 columns (COL1, COL2, COL3, COL4,COL5, COL6).... I need to be able to select all columns/rows whereCOL3, COL4, and COL5 are unique....I have tried using DISTINCT and GROUP BY, but both will only allow meto access columns COL3, COL4, and COL5..... i need access to allcolumns...I just want to get rid of duplicate rows (duplicates ofCOL3, COL4, and COL5)...Thanks in advance.Joe
Hello! Just looking for advise on dealing with duplicates in database. I have a contact table that have a bunch of duplicated customer records. My goal is to combine all duplicated records into one record. This involves couple tables:contact,contact history ,calendar. All tables related by common column "accountno". What would be the best approach for this?
