Queries :: COUNT With Select Distinct On Expression
Dec 9, 2014
I have the following SQL which returns rows of distinct numbers that are calculated from a field.
SELECT Distinct (Left([ProjectID],4)) AS NumberOfCalls
FROM tblProject;
ProjectID looks something like this : 1307-IND-001 and NumberOfCalls looks like : 1307
I need to count the number of unique "NumberOfCalls" entries that there are in a list of about 50 rows. Currently the SQL returns a list of numbers like this:
1307
1311
1401
etc...
I just want NumberOfCalls to show "3". Is there an easy way to do this?
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Jan 23, 2015
I am trying to get a count of the unique customers in an access 2010 database
After some research it seems i should be using
SELECT Count(Distinct [Customer]) FROM [tblMain];
But when i use this i get
Syntax error (missing operator) in query expression 'Count(Distinct Customer)'.
I have tried leaving out the square brackets but this does not work....
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Aug 12, 2014
Is it possible to change this query to search for either a Name or by an employee ID number? The query runs a report on after update. Currently I can only enter the name not the employee ID
Code:
SELECT DISTINCTROW First(Inventory.Employee) AS FirstOfEmployee, Inventory.[Employee ID]
FROM Inventory GROUP BY Inventory.[Employee ID] ORDER BY First(Inventory.Employee);
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Jun 3, 2015
Extended Cost] and salestran.[Extended Price] for each salestran.[SKU Code/Number], Count the number of unique customers, salestran.[Customer Code/Number], per SKU for any transactions equal to or after salestran.[Transaction Date] 11/1/2014.
Problem is, doing a regular count on the Customer field returns an incorrect value. It counts the number of times the sku appears within the given date range, ie 6 transactions with 2 customers, my count says 6. I need a distinct count on the customer, for the above example I want to see 2. Here is the code I have so far which yields an error of "At most one record can be returned.." distinct count in my Select statement along with the other fields I want to see, ie Summary data and SKU.
SELECT Salestran.[SKU Code/Number], (SELECT COUNT(cd.[Customer Code/Number]) AS Count FROM (SELECT Distinct [SKU Code/Number], [Customer Code/Number] FROM Salestran) as cd GROUP BY cd.[SKU Code/Number]) AS [Number of Customers]
FROM Salestran
WHERE (((Salestran.[Transaction Date])>=#11/1/2014#))
GROUP BY Salestran.[SKU Code/Number];
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Mar 18, 2014
I have a table with the following values.
EMPLLOYEE_ID
JOB
PAY_DATE
LOCATION
Most employees have 10 to 15 rows. I only want to pull ALL rows for employees ONLY if there is a distinct count from DATE_PAID greater than 1. There are cases where an employee might have two pay checks generarted for the same PAY_DATE.
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Jul 15, 2015
I'm trying to write a query to get a count of Volunteers under a certain Job Code for a given year - problem comes in that a single Volunteer may record hours multiple times under a Job Code in a given Fiscal Year. I can't seem to get "Unique Values" to work. From my research it looks like I need a two-part query but (as a newbie) I'm not quite sure how to write that. I have two queries, one that works and one that doesn't.
This one counts total amount of hours volunteered under a given Job Code, it works:
Code:
SELECT tblHoursWorked.FiscalYear, tblHoursWorked.JobCodeLookup, Sum(tblHoursWorked.HoursWorked) AS [Sum Of HoursWorked]
FROM tblHoursWorked
GROUP BY tblHoursWorked.FiscalYear, tblHoursWorked.JobCodeLookup;
HAVING (((tblHoursWorked.FiscalYear)=[Enter Year:]));
This one attempts to count number of Volunteers that worked under each Job Code in a given year - it instead counts number of entries under that job code. What I think I need to do is count unique instances of the NamesIDFK, but I can't seem to get that to work.
Code:
SELECT DISTINCT tblHoursWorked.[JobCodeLookup]
FROM tblHoursWorked
GROUP BY tblHoursWorked.[JobCodeLookup];
1) correcting my second query and 2) putting them into one query so I can use them in a report.
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Jun 4, 2013
How to query Select Distinct field + showing other fields? E.g.:
Code:
SELECT DISTINCTROW assetMovementTable.assetNo, assetMovementTable.moveCode, assetMovementTable.compCode, assetMovementTable.compCodeDesc, assetMovementTable.assetDesc, assetMovementTable.equipType, assetMovementTable.equipManufacturer, assetMovementTable.equipModel, assetMovementTable.constYear, assetMovementTable.plateNo
FROM assetMovementTable
[Code] ......
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Jan 29, 2014
I have 2 tables linked with a 1 to many relationship by NAME. Tables look like this....
TBL-STORE
NAME ADDRESS
Walmart 12 Nowhere
Target 14 Somewhere
Lowes 10 Anywhere
Sears 16 Nowhere
TBL-PURCHASES
NAME [NUMBER OF ITEMS] [PURCHASE DATE]
Walmart 4 1/4/14
Walmart 2 1/5/14
Target 0 1/5/14
Lowes 3 1/5/14
Sears 1 1/5/14
Sears -1 (returned to store) 1/6/14
I want a DISTINCT COUNT of [NAME] if Total[NUMBER OF ITEMS]>0, so the correct number will be 2 in the example.
This is one way I've tried to write the SQL, but I keep getting an error...
SELECT Count([TBL-STORE].[NAME])
FROM [TBL-STORE] INNER JOIN [TBL-PURCHASES] ON [TBL-STORE].[NAME] = [TBL-PURCHASES].[NAME]
WHERE ([TBL-PURCHASES].[NUMBER OF ITEMS]>1)
HAVING ([TBL-STORE].[NAME])="DISTINCT");
I also tried an Count(IiF( and can't get that to work either..
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Oct 20, 2014
I am trying to get a combo box to only show unique values, but I can't get it to work properly - it still shows duplicates in the list.
The Row Source is set to
SELECT DISTINCT Areas.ID, Areas.Area FROM Areas ORDER BY Areas.Area;
And the combo is bound to column 2
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Jan 29, 2015
I have a database with an import process which normalises incoming data and appends to various tables. No issues with that. I also have a function within that process which counts the number of new entries for a summary popup when the process has completed.This works by querying the staging table, prior to the append, into a recordset and using the .RecordCount to increment the count (multiple files can be imported at once so this effectively provides a running count, per file, to give a total for the whole import)
I thought it was working fine but this morning I noticed that the count which appeared on the popup was 1 greater than the number of actual new records. I checked the source files and noticed that, for whatever reason, there was a duplicate entry in there. So I presume that's why the count was out by 1.
There's no integrity issue in the main tables as the composite primary keys ensure that duplication shouldn't be a problem. Indeed, the record in question, duplicated in the source, appears only once in the main table post-import. So not too worried about that.
However, I need the count in the popup to be accurate (it tells the users how many new entries require further investugation). And what's puzzling me is that I use DISTINCT in the query, which I would have thought should eliminate any potential dupes in the recordset and thus provide the correct count. It seems it doesn't?
Code:
Public lngNewBalancesTBI As Long ' Defined in a separate module...
-------
Dim dbs As Database
Dim rst As Recordset
Dim strSQL As String
[code]....
Why the dupe, which is still present in the staging table, also makes it over to the recordset, even though I'm using DISTINCT?
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Jan 7, 2014
I'm looking for an expression or SQL for use in a query that will count the number of columns in another query. I do not need to count the records, I just need to know how many columns. I can't seem to locate a reference to a column count - everything points me to record count.
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May 23, 2013
I am using Access 2010 on a Windows 7 laptop. I need a query to provide a list of ID's that have more than one occurrence of IDandDate combined but haven't been successful getting past syntax errors.
Using this table structure as an example:
ID - defined as text field
Date - defined as date/time field
TestValue
This legacy table contains a record for each test. The table should be unique based on the ID and Date combination but was never restricted to that rule. I am converting to a new table but need to identify the duplicate entries so they can be addressed by business folks.
Access 2010 query.
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Sep 19, 2014
I have built a database that shows the purchase of items that have serial numbers, and so are unique. The database shows the purchase oe each item, and subsequent sale, including "Date In" and Date Out".
Each "item" however has a unique transaction reference (Stock No.) I would like to be able to show what items are currently in stock, and therein lies my problem.I am able to use a select count to find all the instances where the stock number there are two stock numbers (ie In and then Out), but have been unable to find a way to filter the records in a query, to show the stock currently held.
only Single instances of the "Stock No." appear in a table, as that would show the current stock held.I have tried numerous ways to achieve this but I have reached a dead end. I am not experienced in writing with SQL.
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Jul 29, 2005
Hi Everyone!,
I have a table with the follwing;
ShopID, CustomerID, Month, Item_ref, Product Category
There are about one thousand shops.
The CustomerID field is only unique per shop.
I.e. all transactions for customer ID '002' in shop 1 will be for the same customer, but customer ID '002' could appear in another shop and will be a different customer,
I want to be able to bring back a list of distinct customers, the number of items they have had and the product categories.
Has anyone got any ideas how I do this? I presume I would need to do a count distinct or something??
thanks!,
Sasha
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Jan 28, 2007
I have a table like this in MS Access database:
IDDateCustomerIDInvoiceNoItemNoAmount
101/01/2007A1AAA1
201/01/2007A1BBB2
301/01/2007A2CCC3
601/01/2007B5AAA6
701/01/2007A6BBB7
801/01/2007B5BBB8
I want to get disctinct count of InvoiceNo while summing up Amount by Date and CustomerID in one query. Firstly, I tried to use correlated query to count unique records but it failed.
SELECT A.Date, A.CustomerID, (SELECT COUNT(B.InvoiceNo) FROM Table1 B WHERE B.Date = A.Date AND B.CustomerID = A.CustomerID ) AS CountOfDistInvNo, Sum(A.Amount) AS SumOfAmount
FROM Table1 A
GROUP BY A.Date, A.CustomerID;
The result of Count is not a unique count. Can anyone tell me what's wrong with this correlated query? :confused:
After hours of googling on internet, the solution I got is equivalent to querying on top of the resulting table from another query.
My final query is
SELECT B.Date, B.CustomerID, Count(B.InvoiceNo) AS CountOfInvoiceNo, Sum(B.SumOfAmount) AS SumOfAmount
FROM (SELECT A.Date, A.CustomerID, A.InvoiceNo, SUM(A.Amount) AS SumOfAmount FROM Table1 A GROUP BY A.Date, A.CustomerID, A.InvoiceNo) AS B
GROUP BY B.Date, B.CustomerID;
Is there a better solution than this in Access? :)
Thanks,
Huyeote
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Jun 18, 2007
Tried several suggestions in the forum but haven't found one to match my needs.
I have one table, Jupiter and need to use this query
SELECT Jupiter.codename AS Build, Count(Jupiter.tooling_ind) AS [# Needing Tool], Count(IIf([tool_req_type]='OR',([requisition_no]))) AS [# Tooled], [# Tooled]/[# Needing Tool] AS [% Tooled], Jupiter.tooling_ind
FROM Jupiter
GROUP BY Jupiter.codename, Jupiter.tooling_ind
HAVING (((Jupiter.tooling_ind)="Y"));
For each "codename", there is an attached "part_no" which can appear under a codename several times. The problem is that I need to count only one instance of the "part_no" for each "codename".
So, my query looks like this:
Build # Needing Tool #Tooled
LP1 769 192
The # Needing Tool is counting every record that, say pn 10592 shows up in and I need it to be counted only once in each "Build"
I did try this suggestion I found with no results.
SELECT Jupiter.codename AS Build, Count(Jupiter.tooling_ind) AS [# Needing Tool], Count(IIf([tool_req_type]='OR',([requisition_no]))) AS [# Tooled], [# Tooled]/[# Needing Tool] AS [% Tooled], Jupiter.tooling_ind
FROM (SELECT DISTINCT Jupiter.part_no FROM Jupiter)Jupiter
GROUP BY Jupiter.codename, Jupiter.tooling_ind
HAVING (((Jupiter.tooling_ind)="Y"));
Is there a way to do this somehow?
Thanks!
Toni
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Jul 6, 2007
I've searched on google for count distinct help but I had no luck. I'm counting 2 different columns and when the query is run the counts in both columns appear exactly the same. Also, I need a SUM distinct (if possible) to sum only where it is being counted in 'CountOfCar_Nr'. Here is my SQL....
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Aug 30, 2005
I'm building a sort of uberquery to do some calculations on a dataset for me, and I reached a point where I'm having some problems. I'm going to have to assemble the main query by doing a join on several subqueries.
Essentially, I have one table with the following fields (DrawingNo, DrawingRev) and another table with a great deal of data in it, but as far as this problem is concerned, it has (DrawingNo, DrawingRev, OrderNo, SPOOL). I have several tests that have to be performed.
The first table contains a master listing of al drawings we are supposed to have, the second contains information related to procesing the drawings. There is one row in the second table for each piece to be made from each drawing.
The first test is to verify that no gievn revision of any drawing has been split across more than one OrderNo. Essentially, I Count(OrderNo) and group by DrawingNo and DrawingRev, so that there is one line in the query for each drawing/revision pair, and a count of the number of OrderNos that meet those criteria.
The second test (and this is the one I have a problem with) involves taking a count of the number of unique values of DrawingRev that occur for a given DrawingNo. Something like SELECT Count(DISTINCT Drawingrev) FROM SecondTable GROUP BY DrawingNo should work, but Access doesn't appear to support "Count(Distinct". How do I get around this, and remember that any answer has to be able to be used as a subquery.
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Aug 9, 2005
I need to select two fields in a select DISTINCT query
Select tbl_Aplaws.AplawID, DISTINCT tbl_Aplaws.Level2 FROM tbl_Aplaws WHERE tbl_Aplaws.Level1 = 'Business' ORDER BY tbl_Aplaws.Level2;
anyone know how to make this work?
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Sep 13, 2005
Hello,
I have a strange problem: one of my comboboxe is looking up a column in one of my table. Some of the record can be duplicated so I decided to change SELECT to SELECT DISTINCT in my SQL for the row source but it doesn't seem to change anything. Is anybody's got an idea why?
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Nov 15, 2007
Ok , I will try and explain this as best I can.
I have a database and would like to run a DISTINCT query ( which I can do no problems ) I would also like to count the number of records at the same time. Say for example my database looked like this
Name Fruit
Adam Apple
Carrie Apple
Hollie Apple
Joe Apple
Adam Orange
Carrie Orange
Hollie Orange
Joe Orange
What I would like it to do is Select the distinct names and list them once ( I can do this bit )
Adam
Carrie
Hollie
Joe
I would then like to count the number of records found for each name and put it next to the relevant name
for example Adam (2) (one apple and one orange)
How would I write the actual query
I hope this makes sense.
Thanks in advance
Adam
PS , great site btw
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Sep 18, 2006
I'm making a form for my school that needs to show every parents name, along with the child they are the gaurdians of. When i use SELECT DISTINCT [Parent Menu PTC].Relations_FullName FROM [Parent Menu PTC]; as the source code it shows only one of each parents name, btu when i use that; I can't see a divorced parents child (it shows bboth parents but only one kid, and they have two kids...) Can any1 help?
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Jul 9, 2012
I am trying to run a query that queries and returns several data fields with one of them being an ID field. I want to select distinct IDs only, however, I don't think just adding a 'distinct' qualifier prior the ID field will do it--the only field that I want to be distinct is the ID, the others it doesn't matter.
how to add a 'distinct' qualifier to a query that just applies to one field only (the ID field)?
Select distinct ID, firstName, lastName, DOB, City from Person where City = "NYC";
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Jun 3, 2007
Hello all,
I am new to this forum. I have this problem where I need to sort the 4 books in the tables below according to the highest quantity of book sold.In this scenario,
Book C would be 1st in the table with a total quantity of 8.
How do I write a query in access to perform such operation. I have to use DISTINCT to get each book and also count the quantity(e.g. Book C:5+8).
But it seems that I can't use Count and distinct together in Access.
Title SalesNo Quantity
BookA22
BookB 31
BookC 45
BookC 53
BookD 6 1
Hope u all can help!
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Sep 13, 2011
I have a query I have 4 fields:
E.G.
Field1 Field2 Field3 Field4
C 20 25 145541
C 40 20 145541
C 10 10 145540
D 20 20 145540
D 10 10 145538
I need to obtain:
C 70 55 2
D 30 30 2
I need to group Field1 and sum Field 3 and field3 and count the UNIQUE ID in field 4.
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May 7, 2013
So I have a table with around 20,000 records and there is a field which holds a phone number for each individual within the organization, I want to run a select query that counts how many are not in the correct format
The format is 10 digits and it must start with a 0
Using Access 2010
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