Eliminating Duplicates In AQuery
Jan 23, 2007
I have created a query which gives me a COUNT for a field type GROUP:
SELECT AllPairAssignmentsQ.COID, Count(AllPairAssignmentsQ.COID) AS CountOfCOID
FROM AllPairAssignmentsQ
GROUP BY AllPairAssignmentsQ.COID;
AllPairAssignmentsQ is based on a union query of 5 tables. The problem I am having is that I am getting some duplicates which I need to eliminate. Each listing contains several fields. However their are two fields in the query which can be used to determine that entries are duplicated. If the combination of MAINCOUNT and COID are identical in an entry then only one of the listings needs to be counted.
The following is an example of my problem:
MAINCOUNT COID
1201 HNVL
1202 HNVL
1203 HNVL
1203 HNVL
1203 COAC
1204 COAC
My existing query will return the following:
COID COUNT
HNVL 4
COAC 2
Since 1203 HNVL is duplicated I would like for the query to count only one entry so that the query returns the following:
COID COUNT
HNVL 3
COAC 2
Thanks for any help that can be provided in solving this problem
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Nov 3, 2004
Hello,
I am building a query that pulls from one databases but I am running into duplicates.
Here is the skinny:
From the [tbl_databases], I am setting criteria that restricts a column containing “Visio”, more specifically, “Not Like “*Visio*”. I am also setting criteria that restricts a column containing “OLD” (it is a Yes/No field).
.
The problem is that there are duplicate rows that contain both “Visio” and “Old. So, simply suing my criteria restriction are pulling out the Visio and Visio/Old orders as well as Old and Old/Visio order.
Can I create a subquery that contain the combination of “Visio” and “Old” to restrict the subset from being extracted twice?
I think I have the logic but not sure not to set it up.
Thanks
Tuktuk
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Aug 23, 2006
OK, first time posting so I'll try to be clear here. I work for a special education agency and have created a database to track student/therapist information. Now, I have reports showing which kids are in which schools and who their therapists are. What I can't figure out is how to print a report, grouped by school, that will display which therapists are active in that school.... any ideas?
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Jul 2, 2014
what I am trying to do with that table is get a sum of all assets, a sum of all Customers, and a sum of all Employees only counting each Comp ID once. Each company that we deal with carries multiple of our products. So as you can see I currently have it in the table where it shows the different data for each product over 2011, 2012, and 2013. Obviously for this I cannot just sum the entire column, as I would have the same company summed multiple times. The thing that is making this challenging for me is that I need it summed for each individual year (2011, 2012, 2013), with the end result being a total number of employees, assets, and customers.
I was thinking that to do this I would need a Sumif formula with several other formulas inside of it, but cannot figure out what exactly I would need to do. I know that if I took it into excel I would be able to do it, but we have over 7000 different customers, each having anywhere from 3-20 different products, and for each of the years 2011-2013... so the data is just too massive to try to convert and manipulate in excel.
The reason that I am hoping to get a count of their customers, assets, and employees is so that we could then take the info from individual customers and find out that particular customer's portion of the total assets, customers, or employees. I guess the mock table that I made doesn't keep the formatting when I add spaces, so imagine that each pair of l l is a column and match that with the columns above.
I also need another column that has the 2012 and 2013 results
l Comp ID l Year l Prod Fam l Prod Group l Prod Code l Assets l Customers l Employees l Assets for 2011 l Customers for 2011 l Employees for 2011 l
l 1101232 l 2011 l Family A l Group A l Prod A l 59000 l 33 l 28 l
l 1101232 l 2012 l Family A l Group A l Prod A l 55000 l 36 l 23 l
l 1101232 l 2013 l Family A l Group A l Prod A l 51000 l 39 l 25 l
l 1101232 l 2011 l Family A l Group C l Prod B l 59000 l 33 l 28 l
l 1101232 l 2012 l Family A l Group C l Prod B l 55000 l 36 l 23 l
l 1101232 l 2013 l Family A l Group C l Prod B l 51000 l 39 l 25 l
l 1101232 l 2011 l Family B l Group B l Prod C l 59000 l 33 l 28 l
[code]....
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Feb 29, 2008
I am have trouble eliminating the $0.00 balances in a query. From what I can figure out is that even though the Balance appears as $0.00 in reality it could be anywhere from $0.0012 to $0.009 or something like that.
What I am trying to do re reconcile the Balance field. If the balance reads $0.00 I want it out of the query. Then I would like to find all the balances that appear to be $0.01 to a negative $0.01.
It seem that no matter what is use as critiera I still can't what I want.
Any ideas?
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Sep 6, 2005
I have a query for clients who come to our office looking for services.
I only need to report 1 visit per client during the month, in other words if the client comes several times during the month, we only count 1.
When I run the query, it gives all the times the client came to the office, but I only need to show once.
Clients are being sorted by ClientID. What do I need to write in the Criteria field to filter clients from showing again ?
Thanks
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Jan 3, 2007
I have many queries that all do the same thing. The problem is that they're connected to specific controls on a form, so I have to make a new query everytime I make a new form to perform the same task as the others. This would be eliminated if there was a way to use the criteria the same way you would in code, like Me!controlname. Is there anyway possible to make these queries more universal so that they can be used by many forms?
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May 21, 2007
Dear All,
I have a table with several fields.
Concentrating only on few fields I'd like to sort out redundant information (unnecessary records).
(It is similar to using Ecxel: Data>Filter>Advanced filter>Unique records only)
So, I'd like to ask for your help how can I reduce my table to unique records.
thx
Csaba
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Feb 12, 2008
Hi this is my first post... so hi all :)
ok what i have is a table with contact details 900k plus
there are about 90k of which are duplicates.
this is the basic feilds that are important in this case.
Id, data_source, data_recived, data_code,
what i want is to have a table with unique records (no dups in data_code)
this table will look like this...
Id, data_code, Num_dups, dup1_source, dup1_date, daysbtw_Dup1_dup2, dup2_source, dup2_date, daysbtw_Dup2_dup3 ,dup3_source, dup3_date, daysbtw_Dup3_dup4 ,dup4_source, dup4_date,
I know there is no more than 4 dups of each record.
what i want from this is a table that will give me a record of how many dups for each record then all the dates that they were added and the date between each record entry.
if anyone can help it would be great .
thanks in advance.
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Jun 28, 2005
I have a field in a database that needs the data entered without any spaces and I'm trying to figure out how to set either the validation rules or the masks so that the system will either automatically delete any spaces or warn the user not to enter them.
My preference would be for them to automatically be deleted.
Any ideas, suggestions?
I can figure out how to make either all numbers or all letters, but the data is both so that doesn't work.
Thanks, in advance, for your help.
Charis
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Oct 12, 2005
hi
I have a query I'm creating that is using a joined view. I'm joining two tables and whereas the first contains unique data to each field the second contans class information so for example while all users are unique many may be assigned to the same class. When i use the join it therefore dupliactes all the class information in the query.
how can i set up the query so that the class information is only output once and not duplicated along with a user every time ?
cheers
chris
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Apr 5, 2014
I have produced a label printing query which eliminates duplicate addresses from a mail list. It works beautifully.
However, when I try to replicate with a different field criteria the new query fails to produce any output at all.
The SQL code I am using is as follows:
SELECT a.[Member ID], a.[Address 1], a.[Member Name], a.[Address 2], a.Town, a.PostCode, a.[e-Mail List]
FROM [Mail List] AS a
GROUP BY a.[Member ID], a.[Address 1], a.[Member Name], a.[Address 2], a.Town, a.PostCode, a.[e-Mail List], CStr([a].[Member ID])+[a].[Address 1]
HAVING (((a.[e-Mail List]) Is Null) AND ((CStr([a].[Member ID])+[a].[Address 1])=(Select cStr(Min(b.[Member ID])) + b.[Address 1]
From [Mail List] as b
Where b.[Address 1] = a.[Address 1]
Group By [Address 1])));
The working version has 'HAVING' e-Mail News =False instead of e-Mail List is Null. The former searches for an empty check box and the latter for an empty field.
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Sep 4, 2014
I use several fields to capture a name: LName, FName, MI and Suffix.
In a report I combine the fields.
=[LName] & " " & [Suffix] & ", " & [FName] & " " & [MI]
This works fine if there is a suffix; however, without a suffix I have an extra space.
What is the "work around" to eliminate the space.
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Oct 15, 2007
I work with an Access database with about 20 tables that requires considerable manual data entry. Although it is time consuming, the bigger problem is the keypunching errors that inevitably occur. A colleague of mine said that some databases can be set up so that two (or more) individuals can enter the same data into the database (basically creating two separate, temporary databases). At the conclusion of this double data entry, the two databases can be compared to see where they differ so that corrections can be made...the logic being that it's extremely unlikely two people entering the same data independently will make the same keypunching error in the same field.
Just wondering if Access has this capability, or if a reasonable facsimile of this approach exists.
Thanks!
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Aug 10, 2014
With a particular client, they want to display a subform in datasheet mode. They do not want an alternative like continuous forms. If I am displaying the subform in datasheet mode, is there any way to eliminate the header row which contains the names of the columns in the subform? I know how to remove the captions themselves but the header row is still there. I don't think it can be done but I wanted to check here with those more familiar with this.
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Apr 22, 2014
I have a query based on 2 tables, joined on Memberid, the result showing :
Table1 Table1 Table1 Table2 Table 2 Table2
Category Association Memberid CustomerName E-mailAddress MemberID
Board Member(Lookup,integer) SAMGA(Lookup,integer) 44 Smith smith@abc.co.za 44
Board Member ADHTY 44 Smith smith@abc.co.za 44
Grower SAMGA 44 Smith smith@abc.co.za 44
I only want to show 1 row, based on the duplication of E-mail address. I know i should be using the row_number function, but cannot get to the result I want.
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Dec 8, 2005
Hey, all! Thanks for helping, here is my situation.
I have a table with about 70,000 records that have duplicate Address field values. The rest of the field values for those records are different. When I do a find duplicate querry I get the result that 17,000 records have the same address. However, when I do the append qurrey as instructed here: http://support.microsoft.com/?kbid=209183 I get a total of only 600 records in the new table. I have tried deleting all of the indexes for both the new and old table, with no luck.
I'm using Access 2000 on XP Pro.
If anyone could help with this I would greatly appreciate it!
Thanks
Will
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Nov 1, 2014
I have an Access table with an indexed key that is currently set to duplicates OK. There are not supposed to be any duplicates in that field. But it is possible than a small number have crept through.
Two questions:
1. What would happen to those duplicate records if I changed the setting from duplicates OK to no duplicates?
2. Is there any way to ferret out those duplicate records first and change them manually? The table currently has 48000 records so it would be a pain to go through them page by page. (I know how to export them to Excel, where the dups can easily be found; I was just wondering if something could do it within Access.)
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Jul 5, 2007
Hi. I have two tables, of which i have run a duplicate query, removed the duplicates by doing an "is null" criteria, and keeping that new table.
I know though there are still more duplicates but the names may not be exactly the same, say barclays and barclays plc. so i run another query on both tables to show me the first five letters of table 1 and table 2. I can run another "is null" criteria query to find the non duplicates there. these are the unique values.
But even if there are duplicates up to the first five letters the next letter may change, for instance barcleys tractors and barclays bank. So these arent duplicates.
So can anyone come up with a way of taking the duplicate ones according to the first five letters, and maybe duplicate ones up to 10 letters, and working out which ones are the unique ones. my brain is frying.
thanks
alex
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Jul 14, 2005
Hi
I have imported a 1 column table from an external source for the sole purpose of deleting duplicates. There are over 400,000 rows. What do i need to do to identify the duplicates?
Thanks
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Apr 11, 2007
I work at a hospital and deal with several thousand account numbers a day. I am working on an Access database that will handle some of my workload. Here is what I am facing. Lets say on some of the tables that I import there are duplicate account numbers with different totals in the end...
acct info info info amount
123456 xxxxx xxxxx xxxx 5.50
123456 xxxxx xxxxx xxxx 17.50
123456 xxxxx xxxxx xxxx 900.00
753951 xxxxx xxxxx xxxx xxxxxxxx
and so on...
is there a way that i can only show one account number but the total of the amount for the account? please help...this is desperately needed.
JG
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Oct 9, 2007
Hey All, i'm looking for some help from one of the heavy hitters in the Access Forum. (Keep in mind i'm self-taught in access..never picked up a book on the stuff) So far i have done ok. I'v made many databases and in my opinion i have a firm grasp on the fundamentals.
I have come accross a database that I did not create which i am suppose to work on. I can do the work just find but i'm a little confused on the structure. when i looked at the relationships i noticed that many of the field names in several tables were bold (showing they were set as a primary key) So i looked at the design view of a few of these tables and noted that the primary key was set on 3 different fields. i also noticed that each field allowed duplication. Furthermore i noticed that on at least one of the tables, in the relationship window there was a relationship using the ID field which was a 1 to many. however there was a relationship on the other side of that table still using the ID field that was a many to one. How can a field have a one to many relationship and a many to one?? it can either be duplicated or it can't...right???
Anyways i also tried to duplicate this in a test database and found that when you make a table and then right click at the side of the field you wish to make as Primary key, that works fine, but doing it on another field simply switches the primary key to that field and takes it off the first one.
(as a side bar..is the only way to search this forum to go manually through all the threads to see if you can find what you need? aka...no search tools?? or did i just miss them?):confused:
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Aug 11, 2006
I have a table that has country_code, Mfr_num, Item_num, catalog_code, mfr_obsolete_code. the key is on country_code, mfr_num, and item_num. I need to find duplicates of mfr_num and catalog_code. Can anyone point me in the right direction on this?
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Jan 22, 2007
I have the data from a membership DB which has quiet a few duplicated Names and addresses (though they may have a 'type' field which is different)
I have identified these using the find duplicates wizard. Is it possible to use this query to delete the duplicated entries and leave one record.
Thanks
RussG
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Jun 8, 2007
:confused: Duplicates
I have all my master data in my table which has a lot of duplicates (700 entries). I ran the find duplicate query offered by access, but exported the data to excel to delete all the duplicates.
My question is how do I import that updated excel list back into the duplicates query so that it updates my master data in my table?
Thanks
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Sep 6, 2007
I do not understand why this is happening but I am getting some, not all, records duplicated in the Select query on two tables. (see attached)
Can anyone explain why AND how I can make it return without duplicates.
Cheers
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