Counting No Duplicates

Jan 18, 2007

Hi guys,

I'm actually starting to use Access and I have a question about a query.
Basically I have a table that says:

ITEM ORDER CAT
A 1200 01
A 1200 02
B 1200 01
B 1100 01

I'd like to count the number of Orders per each item, without counting duplicates. The Output should be:
A = 1 Order
B = 2 Orders

But when I use the Count option on my query table under ORDER it calculates:

A = 2
B = 2

As if is counting the number of records.

How can I solve this problem?

Thanks so much

dante

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NOT Counting Duplicates

Jun 13, 2006

Hello everyone,

I have been working on a database that involves Clients and Group Meetings. I have a table for Clients (which includes their ID, Name, ect) and also a table for Groups(Group ID,Name,ect).This is set to keep the attendance of each group meeting.

I would like to do a count of all the members that belong to each group. Right now I have the query set to count the Client ID with a group by of the Group name. This ends up counting a Client ID more than once each time they attend that groups meeting. Once the client belongs to a group I would like it to not count them more than once.

It's probably something simple that I'm overlooking. I have showed other people and nobody has had any answers about being able to a count without counting duplicates.

Here is my SQL:

SELECT DISTINCT Count([tblMaster-GroupMeetDates].ClientID) AS CountOfClientID, [tblMaster-Group].GroupName
FROM [tblMaster-Group] INNER JOIN [tblMaster-GroupMeetDates] ON [tblMaster-Group].GroupId = [tblMaster-GroupMeetDates].GroupId
GROUP BY [tblMaster-Group].GroupName;

Thank you to anyone that can help

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Counting Unique ID's Without Duplicates

Jun 29, 2006

Hi,

I have a problem with getting the right result with a query.

To this topic I attached a part of my database including 2 queries. The queries are almost the same, except the first field. In query 1 is the total 'Group By' and in query 2 'Count'.The other fields are parameters, which are the same in both queries.

My problem:
If I run query 1 then the result is 31 rows with unique ID's. When I run query 2 the result is 35, because the query counts 4 duplicates.

The correct result I want is 31. That means count the unique ID's. I am able to show the ID's with query 1, but I am not able to count them correctly. I tried to add 'DISTINCT' in SQL view but that didn't help.
Also other solutions written in this forum didn't work.

Thank you if someone (with more query/SQL experience) is able to help me... :o

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Find Duplicates And Create Table With Dates Of Duplicates

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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Find Duplicates Different Than Duplicates Deleted

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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Counting Of Cases And Counting No Records

Jan 26, 2007

I have a report due the first of each week in which I need the cases open and cases closed for the previous week, the week two weeks prior and the 2007 and 2006 year to date on two different types of cases. I have a case management table with a field for Type of Case, date assigned and date closed that I uses in my queries. Presently I have two query, one that generates only Type 1 cases from the Case Management Table and another for Type 2. I then use the Type 1 Query in another query that limits the results for Type 1 cases to those opened last week, one for those open two weeks ago, one for 2006 YTD and one for 2007 YTD. In these 4 queries I have one field [Type of Cases] and I have the query count. I then do this for Type 2 cases and then go through the whole process to do Closed Cases. All my queries have criteria to automatically filter the dates to the time periods mentioned above. I then have one report query that I put all the number in for my report. This query has 16 fields with the numbers for each period, last week open and closed, 2 weeks open and closed, etc. I then generated a report that takes these numbers from my report query and puts it in a report format automatically. As you can imagine this takes some time to go through each query to generate these numbers, so I was wondering how I may do this differently. Also, I have experienced a problem when a field produces no records I get a blank sceen with nothing under the Count of column and get the same thing for my report. How can I fix this.

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Changing From Duplicates OK To No Duplicates

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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Odd Duplicates

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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Duplicates

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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Please Help With Duplicates

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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Several Pk's And Duplicates Ok?? WHAT??

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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Duplicates

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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Duplicates

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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Duplicates

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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No Duplicates...

Oct 31, 2006

Hi,

I have got a table that has following fields display on a form:

ClassNo Class Date ClassType ExecutionDate Order Quantity

The Table CLASSES has got many records which are duplicate. Mostly ClassNo is duplicated. I could have stopped duplication by restricting table not to accept duplicate values, but my requirement is such that i dont want to stop the table from accepting duplicate values. When i display the same table data on the form, all the duplicate entries are displayed.

All i need is to find a way to stop the FORM showing duplicate ClassNo Field. The Duplication restriction i wish to set only on ClassNo. If there are more than one ClassNo reptition than it should show that entry only once. For example the form looks like this:

ClassNo Class Date ClassType ExecutionDate Order Quantity
1 12-12-2006 A 12-01-2007 Ok 10
1
1
1
1
1
2 20-10-2006 A 20-11-2006 Ok 100
2
2
2
2

I wish to see the form this way:

ClassNo Class Date ClassType ExecutionDate Order Quantity
1 12-12-2006 A 12-01-2007 Ok 10
2 20-10-2006 A 20-11-2006 Ok 100

Regards,

Darno

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May 13, 2005

i am trying to count the number of records based in a query

can some one send me in the right direction

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Feb 8, 2006

I have a database where there are numerous fields but they all only have one three values Y, N, N/A.

how do i get something similar to Excels "countif" function to summarise the totals of Y's N's N/A's inach field ?

Thanks

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Feb 8, 2006

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Jan 26, 2007

How can I count the number of times an employee shows up on a report. The final result would be:

Employee 1: Reader1
Employee 1: Reader2
Employee 1: Reader3
Employee 1: Reader4

If an employee shows on a report 4 times, I need it to look like the example above in sequential order, not just a total.

Thanks for your help.

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Jan 10, 2006

Hi

I have a form which displays which products are on sale but I want it to count stcok orders down, i.e. if there are 10 stock and someone orders 1 I want the system to automatically recognise that there are only now 9 in stock, any ideas? Help really would be appreciated!

Thanks

B

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Counting

Apr 18, 2007

Hello,

I have a form called feedback which has three columns and each cell in a column has a combo box that holds (Yes/No/Empty), and I want to count each column's value for example let's supposed that:

feeback number: Column 1 (Are You happy) - Column 2 (Are you sad) - Column 3 (Are you hungry)
1 : Yes - No - Yes
2 : Yes - Yes - Yes
3 : No - No - Yes
4 : empty - No - yes

Counting: the next step is that I want to count:

values in Column 1, where number of Yes =2 , and number of No=1 the stum of Yes + No = 3 and empty = 1
values in Column 2, where number of Yes =1 , and number of No=3 the stum of Yes + No = 4 and empty = 0
values in Column 3, where number of Yes =4 , and number of No=0 the stum of Yes + No = 4 and empty = 0

So, how can I apply this concept in MS ACCESS (2000-2003).

I am waiting for you kindly reply.

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Jun 27, 2005

Hi,

I have a form and within that form there is two combo boxes and one text box. When one choses a value from one combo box, and then chooses a value for the other combo box and then enters the value into the textbox I don't want the user to be able to enter the same arrangement. That is I want to prevent duplicates on that combination. Also if they do this I want a Message Box to appear saying that that this combination already exists

I was thinking of using a multiple field index to prevent the duplicates, but I don't know if this is a wise thing to do. Can someone give me some help to see how I can prevent duplicates or offer another solution to prevent duplicates on the combination of the values.

Thanks
Greg

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Aug 23, 2005

I have a table in a healthcare patient database that stores Admitting Number, Scan Number, Last Name, and some other fields detailing the scan. Each patient can have multiple scans and I'm trying to design a query that lists how many scans each patient has had by finding all the duplicate admitting numbers. I'm using this SQL statement:

SELECT MultScans.Admitting_Number, Count(MultScans.Admitting_Number) AS Num_Of_Scans
FROM MultScans
GROUP BY MultScans.Admitting_Number
HAVING (((Count(MultScans.Admitting_Number))>1));

which works fine but I can't figure out how to also print out the last name, scan number and the other fields in this query. If I add the field to the select part it says I can't because the expression is not part of the aggregate function and if I add the expression to the 'group by' the query runs but displays all the duplicates. Thanks for any help.

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Nov 28, 2005

hi,

i have a form with a sub-form on it. each has is bound to a table. the main form's table has a one to many relationship with the sub-form table, and the sub-form table has the PK of the main table as a FK.

every time i try to add a second record to the sub form, it gives me an error saying i cant have duplicate foreign keys.

i cant figure out what to do. i am using access 2003 and microsoft sql server version 8. i need to enable duplicate foreign keys so that each record of the main table can have more than one record in the sub table.

Please help!

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Jun 13, 2007

Hi, How do you normally prevent duplicates being inputted into you forms.My Idea is thisThe input text box doubles up as a dropdownlist of current values held in the database for that field.So when you access the organisation form and go to the first text box as you enter the 'I' for IBM All the orgs with 'I' appear. When you see that the organisation your inputting already exists you will stop and move on to the next form.I dont know how to do this, so currently I have set the field OrgName as Indexed: Yes (No duplicates) but this isnt really any good as the user enters all the other details and clicks submit before the error message comes up.I have attached my file for you to understand this better.

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