Queries :: Access 2007 Query With Null Values
Apr 17, 2013
I am currently creating an Access 2007 database for calculating salesperson commissions. I have a table with 5 fields I'm working with: SalesRep, SOWRep, TerritoryRep, Period and Commission. I am trying to build a query that will calculate commission for a salesperson for each record where their name appears in one of the first three fields. Each time their name appears, they get the commission listed in the Commission field for the stated Period. I have managed to do this part successfully. My problem now is that I am creating a query that will sum all of their commissions by Period. I have run into a situation where sometimes a salesperson will not appear in one of the rep fields, resulting in NULL values in the previous queries. How can I create a final query that will sum correctly even if there are NULL values returned on the previous queries?
Here is what I have so far:
November: Avg((SELECT [SumOf1/3GM$s] FROM [BaxterActualMargin1] WHERE [Period] Like "November*")+(SELECT [SumOf1/3GM$s] FROM [BaxterActualMargin2] WHERE [Period] Like "November*")+(SELECT [SumOf1/3GM$s] FROM [BaxterActualMargin3] WHERE [Period] Like "November*"))
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Dec 19, 2012
NOTE: Im working in MS Access 2003, only results in this SQL/database (not mysyl, MSSQL etc)
I want to be able to ORDER an SQL query and put the NULL values last.
I have a basic databse:
Table name: PeopleTable
Field names: TableID, PersonField, PersonID
The aim is to order by PersonID and put the NULL values last
See pic1.jpg;
The picture (pic1.jpg) shows the database as it is without a query.
See pic2.jpg;
Picture 2 (pic2.jpg) shows the query results when I use the orderby statement (SELECT * FROM PeopleTable ORDER BY PersonID As you can see it shows the results ordered by the PersonID however the NULL values are first.
See pic3.jpg
Desired results, it is ordered by the PeronID and the NULL values are last (NOTE this is an editied screenshot).How can i achieve this is MS Access 2003?
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Apr 17, 2014
how to return all values in a query when a form critieria is left blank. I have made some progress, the combo box criteria queries were fairly simple, but i'm getting stuck with my date criteria. My query doesn't return null values when I want it to.
I want it to return all records (including null values) if the form OpenFrom and OpenTo dates are blank, and just the values between the selected dates (excluding null values) if the form is completed.
Code:
SELECT qryReportSelector2_Authority.*, qryReportSelector2_Authority.ApplicationDate AS ApplicationDateFilter
FROM qryReportSelector2_Authority
WHERE (((qryReportSelector2_Authority.ApplicationDate) Between Nz([Forms]![frmReportSelector]![OpenFromDate],DMin("[ApplicationDate]","[qryAllCases]")) And Nz([Forms]![frmReportSelector]![OpenToDate],DMax("[ApplicationDate]","[qryAllCases]"))));
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Mar 27, 2014
I have an expression that sets an AI Buy It Now value that is 125% of AI Value and rounds it, which follows AI Buy It Now: Round(([AI Value]*1.25)/10)*10
I need to add to this expression that I only want this calculation applied if AI Values are greater than 999. But I can't figure out how to add this stipulation to the above expression. I have tried IIF but it is not working.
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Jan 16, 2014
I have a basic query off a currency table :
Quote:
SELECT tblCurrencies.CcyID, tblCurrencies.Ccy
FROM tblCurrencies
ORDER BY tblCurrencies.Ccy;
Now - I have a separate table of balances, which is linked to the currency table by the same CcyID, and which also has identifiers to link it to other tables (e.g. AccountID)
As part of the above query, I want to return the count of unique AccountID's in the balance table for each currency. So in other words, I want to know, for each currency, how many unique accounts exist?
Each AccountID could appear one or more times in the balance table (one-to-many relationship), so I only want to count the number of unique ID's.
So I started with the following :
Quote:
SELECT tblCurrencies.CcyID, tblCurrencies.Ccy, Count(tblBalances.AccountID) AS NoOfAccounts
FROM tblCurrencies INNER JOIN tblBalances ON tblCurrencies.CcyID = tblBalances.CcyID
GROUP BY tblCurrencies.CcyID, tblCurrencies.Ccy
ORDER BY tblCurrencies.Ccy;
But this just gives the number of AccountID's per currency (regardless of duplication within them)
I found this article which informs me that a Count(Distinct) query won't work in Access and to use subqueries instead.
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Jul 7, 2014
Access 2007 query that has a specific date range between #6/1/12014# and #7/1/2014# returns the date I need. How do I now get it to pull just occurrences on Fri Sat and Sun of the month of June?
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Sep 12, 2007
i have checked the forums and i know they kind of answer this question, but im not really sure where i am ment to write it!
I have two queries, which a third query subtracts the 1st query and 2nd query values and gives the end value. If the 2nd value is null, i get a null value at the end, as i need to change this to zero instead. i know i need to use nz (as seen in microsoft access help, and other places on this forum) but im not sure exactly where to put this on my query, and in which query.
Basically:
(qryCountpartNo.CountPartCode)-(qryTotalquantityallocated.sumofquantity) = qryTotalFree
both countpartcode and sumofquantity may be null at any time
Any help would be greatly appreciated!
Thanks in advance,
Emily
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Apr 24, 2006
Hi there, instead of blank fields in my crosstab query, and hence my report, i would like a standard comment, such as 'No Booking'.
My crosstab is something like this:
.........A...........B..............C............. D
1.......X
2.......X..........................X
3...................X............................. .X
(Ignore the dots, obviously)
Currently, when i try to open the report based on this query, it fails unless each column has data in it for at least one record.
I've tried using the Nz function but haven't been able to make it work. Thankyou in advance! :)
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Jan 17, 2014
I am trying to alter this parameter to bring back all records if either beginningsalesrange or ending salesrange is left blank. I can't quite get it right.
Between [forms]![frmState]![BeginningSalesRange] And [Forms]![frmState]![EndingSalesRange]
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Apr 1, 2013
I have a table with two fields; Part and remarks - both Text fields containing 1.8 million records. Remarks field has 600,000 blanks in the field. I filtered for blanks to get the 600,000 records displayed. I want to update this field to N/A where null values exist. My code is
UPDATE PartApplications SET PartApplications.remarks = "N/A"
WHERE (((PartApplications.remarks) Is Null));
The query updates 55,000 records ONLY and leaves the remaining blank.WHY would all null values not get updated?
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Sep 24, 2013
I have a form with a textbox, where one inputs a number and then I run a query with the form criteria. The query is
Code:
Select Blah blah from dbo_temp where A>textbox value OR B>textbox value OR C>textbox value OR D>textbox value
The columns which are linked to the textbox some times contain null values. So, A, B, C, D columns do contain null values.
The expression in the "Criteria" column of Columns A, B, C, D (all on different lines - to make sure OR criteria is fullfilled) is as follows
Code:
>IIf(IsNull([Forms]![MainForm]![Criteria]),-100,[Forms]![MainForm]![Criteria])
I've put in -100 as an arbitrary never possible number. Obviously, this does not return Null values.
Question: How can I return both Null & Numbers when the Textbox in the form is left blank? in all the columns. Currently, I am not getting Null values
Code:
>IIf(IsNull([Forms]![MainForm]![Criteria]),SHOW ME EVERYTHING INCLUDING NULL VALUES & NON-NULL NUMBERS,[Forms]![Material Finder]![txtPS])
or in other words
If the textbox is blank, show me all the data available, else if it is not blank then show me only the values that are greater than the number entered in the textbox from within column A, B, C, D ....
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Sep 26, 2014
i have 2 tables that i am linking on a field that matches with null values on both tables but it either pulls nothing or when i put a right join pulls just one tables data.
i have also confirmed both are pulling from the same data source, so no issues with field properties and confirmed they are null values in each field within both tables.
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Jun 26, 2007
I'm having a problem with queries, and I can't seem to find a solution in books - I looked through about ten of them and none of them addressed the problem. This may be because it has a painfully obvious solution...
A little background:
I am designing a database for a debt-collection law firm. One of the functions it must have is to keep track of various different sorts of financial transactions which can pertain to a given debtor (ie, a received payment, a cost expended, and a few other things).
The problem is that, in generating reports, I need to use queries to find several sums of only those transactions which fall into specific categories (for instance, to calculate the amount a debtor has paid against his balance, it needs to sum only those entries which are both linked to that debtor's ID number and whose type field reads "payment", and then subtract from that those entries whose type field reads "cost"). The problem is this: not all debtors may have "costs" entries, and when there are none, the report comes up blank with a single "#Error" written in the name field and nothing else present.
I believe the problem is that the Sum aggregate is returning a null value when the query finds nothing that meets the criteria. I have been unable to find a way around this; the Nz() and IIf() with IsNull() functions don't seem to be helping.
The query runs as intended when there are entries for every relevant type; however, it is undesired to have to enter a "payment" of $0, "cost" of $0 etc for every entry just so that this function works.
Is there anything I can do about this? Any input would be appreciated, as I'm fairly inexperienced with the use of Office Access. (If it matters, I am using Office 2003).
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Apr 4, 2014
I am trying to use the expression below to transpose strings of 4-6 numbers (140504) to a string of 8 numbers with "20" in front (20140504). Some of the [Receive_Date] fields are empty or are 0, and in those cases, I need the expression to return a null value.
New_Receive_Date: IIf([Receive_Date]=0,"",IIf([Receive_Date]="","",Format([Receive_Date_YMD],"000000")+20000000))
The Format(...) part of the expression works fine on its own, but I am new to dealing with null values in my expressions, and when I add the rest of the expression, all '#Error' values are returned.
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Jun 12, 2013
I have a query that performs some calculations, these calculations feed into another query and produce a final value. If there are no null values everything works perfectly. But when there are null values, I get errors.
What I have tried:
1) I tried to implement the Nz function for each field of the formula that is not calculated but from user input.
2) I tried to implement the Nz function for just the field that calculated the last result before feeding into the next query, but it didn't show the 0 value I gave.
3) I tried to use UPDATE TABLE SET in SQL, but I don't think I was using it right. I tried to use it for all records but always got an error when it ran.
The first two above result in showing no values at all, even if there are some. The third didn't work. How to easily update null values in the query to 0? All I could think of was to somehow use Criteria or SQL.
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Oct 7, 2013
I have a calculated field (Bhours) with the following IIf function:
=IIf(Fields!BDate.Value<=Parameters!Pdate.Value and Fields!EDate.Value>Parameters!Pdate.Value,Fields!H ours.Value,0)
It works perfectly, but I don't like the fact that it has a zero for the false part as I like the field to the blanc instead of filled with a zero.I can't use a space as I need to calculate with this field later on. I tried using "", but then the field displays #error".
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Jul 1, 2013
I am currently working on an instrument datebase, I have a mainquery that takes care of user inputs from a form. The main fields that have been queried on are Type, System, and Manufacturer and they are all look-up fields that contain some null values.
On the same criteria row for these fields, I have
Like IIf([forms]![User Interface].[qtype2]="","*",[forms]![User Interface].[qtype2])
Like IIf([forms]![User Interface].[qsys2]="","*",[forms]![User Interface].[qsys2])
Like IIf([forms]![User Interface].[qman1]="","*",[forms]![User Interface].[qman1])
qtype, qsys and qman are the user inputs from the user interface that returns look-up table values.
This works fine when all 3 of these fields are all filled out for a certain instrument. The problem arise when some fields of the instrument are left blank or is null. The instrument won't show up in a query at all. What I wanted it to do is to show everything including the ones with null fields when the user input are null or "". When the user specifies certain requirement I only want to show the ones that are not null. I understand that putting them on the same row means AND, I have tried to OR them and did not have the result i wanted.
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Mar 10, 2014
I'm trying to create an expression to calculate percentage.
The fields, Value A and Value B might both have null values, but I do not want Access to treat nulls as zero (as in the Nz() fn). How do I get the expression to exclude any nulls and not calculate for those rows, but set the calculated value for a row with null A or B to zero.
I want it to set no calculated value to zero so I don't get overflow errors and can therefore order the data by the calculated field.
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Oct 5, 2006
Is Access slower at summing null records than SQL server?
I have a query which takes less than 1second in SQL server but takes about 5-10 in Access but can't think why there is such a lag in processing speeds.
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May 22, 2015
I have a query which returns, among other things, a number of boolean fields. In some cases, there will be a genuine True or False value in each of these fields; in others, it can and should be Null (e.g. as a result of a 'failed' LEFT JOIN of some description, where there is no associated record in the joined table which fulfills the criteria)
So something like this :
Code:
SELECT [tblTable2].[fldBooleanField]....
FROM [tblTable1]
LEFT JOIN [tblTable2]
ON [tblTable1].[SomeID] = [tblTable2].[SomeID]
However, I will be writing the result of the query to a text file and here's the problem. I want to show a numeric value for a genuine True / False (i.e. -1 and 0 respectively using the standard boolean conversions in Access) and a blank for any Null values.
So I tried this :
Code:
SELECT CInt([tblTable2].[fldBooleanField]) AS fldBooleanField....
FROM [tblTable1]
LEFT JOIN [tblTable2]
ON [tblTable1].[SomeID] = [tblTable2].[SomeID]
However, currently when I look at the exported recordset in Notepad, I am getting 0's for both False and Null values (and -1 for True)
How I can adapt my query to keep Nulls...null? And convert the genuinely present boolean values to integer form?
Only thing I can think of is to use (untested) :
Code:
IIf([tblTable2].[fldBooleanField] Is Null, Null, CInt([tblTable2].[fldBooleanField]))
But there's a number of boolean fields in there, all requiring the same treatment.
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Nov 19, 2012
i'm creating a search form giving the end user a range of controls to use when filtering/searching data. See the image.But, i think my range search (using the textbox) to put in a lower and upper limit...is preventing this from working. In fact, when i put data into all the controls, no data pops up in my subform.
My query data source can also be seen...showing you how i've handled teh null entries. (i need to put in a null 'handler' for the two textboxes?)
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Dec 4, 2005
I need to create a query with the MTD field
I have created the MTD and it works!!! but now I need it to show all of the PartNum fields even if null. do I need to convert all nulls to zeros? if so how do I go about this?
Here are the fields in the query
First Field:
Field: PartNum
Table: Part
Total: Group By
Second Field:
Field: UnitPrice
Table: OrderDetail
Total: Group By
Third Field:
Field: NumOrdered
Table: OrderDetail
Total: Sum
Fourth Field:
Field: MTD: Sum([NumOrdered]*[UnitPrice])
Table: (blank)
Total: Expression
Fifth Field:
Field: CurrentYear: Year([OrderDate])
Table: (blank)
Total: Group By
Criteria: Year(Date())
Sixth Field:
Field: CurrentMonth: Month([OrderDate])
Table: (blank)
Total: Group By
Criteria: Month(Date())
When I run the query I only get 2 parts and their total. but I want all parts to show up even if they have not been ordered in the month. the parts that have not been ordered should say $0.00 in the MTD field.
Any Suggestions???
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Nov 9, 2005
Hi,
I have a problem with one of my query, the query has 2 tables, the secondary field from Table2 is linked to the primary field of table1.
The primary field Doesn't allow null Value
The Secondary Field does allow null value which means that the Data in table 1 only concern Some of Table2's Data.
If I run the query with the two tables I can only see the records with the secondary field with no Null Value.
Is it possible to get the query Showing All the records of table1 2 and Table1 even if Table1 has no values?
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Sep 7, 2007
Have the following scenario with perhaps inbuilt fatal flaw
Building an Inventory Management db and in the process of constructing the tools to move some inventory from 1 location in the warehouse to another (purely an internal transfer)
Part of my table design includes an allocated quantity field to record any outstanding orders for this inventory unit (I am planning on a built in LIFO system, which I haven't got around to contemplating yet)
All went well, the stock was decreased from the existing location using an update query. but failed to materialise in the new location using an append query
After much yelling and cursing at the offending query, finally did a search and found the following:
Update queries will not work if you trying to append a primary key value (knew that one) OR you are trying to append a null value into a field
In the real world, it may well be possible that I will have 0 allocations for a given inventory unit
Does anybody know a way around this seeming impass, or am I faited to rebuild my tables again?
Thanks in advance for any enlightenment
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Dec 21, 2004
I have made a query from a table to count something.
Now, I dont know how to exclude the null value to the new query.
example:
Query Name: School
Field: Sch_No, Sch_Name, Subject1, Sum1, Subject2, Sum2, Subject3, Sum3, Subject4, Sum4, Subject5, Sum5
After run this query, there is a field(Subject4) has a null value.
Before I make a nice report, I have to exclude Subject4 & Sum4. And this will make Subject5 the fourth subject without displaying Subject4 & Sum4.
I hope anybody can help me..i dont know how
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Oct 10, 2011
2007 version - my child query is not returning null values. I have 2 fields, both pulled from a parent query. One is "DaysSinceRecd", the other is "AmountPaying". The parent query returns multiple results, which is fine. For example, the parent query might have 10 different records for "0" "DaysSinceRecd", with different "AmountPaying" for each of those records.
In the child query, I am trying to condense that down, so that I only have one "AmountPaying" for each "DaysSinceRecd". It's working fabulously, except that there are records in the parent query that have a value for "AmountPaying" but a null value for "DaysSinceRecd". The null value for "DaysSinceRecd" cannot be changed to another value, it needs to stay null. My child query is not returning the null records. I tried adding to the criteria: IsNull Or IsNotNull, >=0 or <=0. That's not working.
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