Null In A Calculation

Jul 12, 2005

Ok, so sorry if this has been asked before but I couldn't find my answer searching.

Basically my expressions in a query are giving me #error because there are some null fields being calculated.

I would like to know how to consider all null values as 0.

Is it something like this? IIF [FieldName]=Null,0

There are about three or four different fields that need something like this.

Also, I'm kind of new at this :o so could someone please tell where exactly to put the code for this?

thanks so much in advance.

jo�lle

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Null/zero Calculation

Nov 30, 2007

i have database, my old database use blank, the new one use "0" (zero) on empty field, let's call "num" field. when i do calculation, it doesn't return any value (both on zero/empy). I use "-" (mines) calculation.

So far i save it on excel and use excel formula to do the calculation.
How i can solve this problem?

thanks

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General :: Calculation Of 2 Amount If Some Of The Fields Null

Oct 16, 2012

Calculation : In the event the null, is will become 0.

OT Qty: Nz([Qty(Overtime)-Nz([Qty(Work Hour)])

Is work to calculated the OT amount. How to set the value become zero in the event the the Qty(Overtime) was null.

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Modules & VBA :: Switch Function - A Null Makes Whole Column Null

Nov 16, 2014

I do not understand what is happening here. I have foll0wing line in a calculated query field:

m: Switch([EmpID]<5,1) ' run Query 18 in attached example, A2007/2010

this produces 1 for all EmpID<5 and Null for all other EmpID's. All as expected.

But if I do this:

m: Switch([EmpID]<5,1,[EmpID]>=5,Null) ' run Query 19 in attached example

then the entire column is set to Null

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Modules & VBA :: Invalid Use Of Null With No (obvious) Null Values

Jul 5, 2013

It might be an easy one but I just wasted the past hour deciphering through my code in order to solve the run-time error '94' that I'm getting when trying to execute the following code:

Code:
Private Sub cmdUpdateDates_Click()
'###################################
'This sub aims at combining the timesheet date and the start and end time into the fields [Start Time] and [End Time].
'###################################
Dim intCounter As Integer
intCounter = 0
Dim rs As ADODB.Recordset

[Code] ....

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Query With Is Null Returning Not Null Records

Apr 18, 2006

Hello all,

A bit of a weird one, I've got a query and the criteria for showing records is that one particular field is null. However the query is showing records with the values in the field chosen for the Is Null.

Not sure why this is happening, has anyone come across this problem before?

Thanks.

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Apr 3, 2008

I am having problems with setting up a set of combo boxes.

What I am trying to do is if combo Productline is empty then in combo PartNumber would show all products but if combo Productline has a value selected then in the combo partnumber would only be able to select the partnumbers in that productline.

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Invalid Use Of Null ? How To Assign Null

Nov 16, 2006

Hi, I have some problem with assigmnet with date and string variable. what i wana do is get data from Forms textboxes into variable and then by insert query send to history table.

the problem occurs when there is blank textbox its says invalid use of null.

e.g
myStringVariable = Forms!myform!EmpName
myDateVariable = Forms!myform!EmpDOB

this code is behind the update button which i press when ever i want to shift data to History table

so when the fields are empty the invalid use of null error arrise

any idea how to handle this null specially in date

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Field Criteria: Is Null; There Are Null Values In That Field; No Records Are Returned

Nov 16, 2007

I think the title pretty much sums it up....

I have a query where data is first sorted by user input; first field's criteria: [fieldname], then by another field's criteria: Is Null.

I know there are records containing null values in the second field, as I have run a select query with the criteria: Like "*", to make sure they are null, and not zero-length-strings.

The query is refusing to return any results...

Any ideas?

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IF Then Calculation

Oct 11, 2005

Trying to calculate a few fields. 1st field is [delays] and 2nd field is [Planned]
The Plan scheduled for 60 and the Delays are an entered value. In the on update command button on the form I want code that will take the value above 60 and add then to the value in the [Delays] So if delays is 10 and the planned is 70 then planned will change to 60 and delays will = 20

any help

Jon

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Q:Calculation

Oct 24, 2005

Hi All.

I have 3 tables in Access:
tblCurrency (Fields: IDCurrency, CDate, CRate)
tblOrder (Fields: IDOrder, OName, ODate)
tblCalculation (Fields: IDCal, Rate1, Rate2, Rate3, COrder)
IDOrder is related to COrder with "One to Many" connection.

I have Form frmOrder, based on tblOrder. For Example Form has 1 record:
IDCal OName ODate
1 XXXX 2005.10.24

For this record related table has 2 records:
IDCal Rate1 Rate2 Rate3 COrder
1 10 3.5 15 1
2 6 4.2 12 1

tblCurrency for Exapmle have one record too:
IDCurrency CDate CRate
1 2005.10.24 0.2

In frmOrder I have textBox txtRate. Here I need to be calculated:

=Sum (Rate1*(CRate from tblCurrency Where tblCurrency.Cdate = tblOrder.Odate)+Rate2*Rate3 for Each record related to tblOrder).
By Exapmle: (10*0.2+3.5*15)+(6*0.2+4.2*12)=106.1

Please help with expression.
Thank You in advance.

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Jun 9, 2007

hey i hope some one can help me...

I am making a database for products and suppliers. Many suppliers can supply each product.

The product details are in a table called products, the suppliers details are stored in a table called suppliers and the suppliers offer for each product is stored in a table called prices.

the structure is as follows:

Table: Products
Product Name
Trade Price

Table: Suppliers
Supplier Name

Table: Prices
Product Name
Supplier Name
Supplier Offer

I have form that shows the product details and a subtable linked to the table:prices.

The problem

I need to add a field in the subtable called "Percent off trade" which is the trade price - supplier price / trade price * 100

i created a query showing the same records as the prices table plus the field "trade off price" and set the Field to:

Percent Off Trade: ([Forms]![Products]![Trade Price]-[Prices]![Supplier Price])/[Products]![Trade Price]*100

But this doesnt give me the correct percent :confused:

I hope i have explained this query and would really appreciate anyone who takes the time to suggest anything that could help

thanks in advance!

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Nov 21, 2007

How can I multiplicate two numbers from two columns in a subform, show their result at the end of the row and then calculate sum of those results on the main form. This is something what I know how to do but the problem is following:

The total sum on the main form should be multiplicated wit 0,5 % and then reduced for a value of a specific row sum. It should be something like this: (Sum of rows sum * 0,5 %) - Sum of the specific row = Total sum on the main form. And all of this should be on a report too.

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Jan 2, 2006

What would I use for a formuls to find all product that are in stock.
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In my table I have it as UnitsOnHand, I have it as how many, like 1 or 3 or 4 etc. And also a field for Paper or Metal.
How would I query just for paper and not metal?
I am also going to need a query for the lowest price and the highest price.
Please understand I am New and I have allready search through all the post and can't seem to find anything close to what I am trying to do.
Any and all help would be great

Thank You
WackoWolf

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Jan 20, 2008

hi,

i'm working in a database and i face some problems in some calculation

this is my table which contain these fields:
NOC number
Company Name
Warning Letter

Note: each company has many NOC

Here what i need from the query

1- create a field which contain a total of warning for each month
2- create a field which contain a total of warning for each NOC
3- create a field which contain the total of warning for the company

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Feb 26, 2008

This is probably an easy calcualtion I am overthinking...
I am trying to make a query where I am calculating the "Total Value" of each customer's order of each item for the current week. The item "my company" is selling is fish, sizes small, medium and large all at different prices. I'm not exactly sure what they mean by "Total value", but I assume I take the cost times the quantity...but then what is the difference between Total Value and total ordered (in dollar amount)? Any suggestions?

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May 25, 2005

I wonder if someone can point me in the right direction with a calculation problem. I have never done calculations in access before but want to make a balance sheet for a club account that I am designing. Very much in its trial stages, I have a form with three currency text boxes in it, set up as continuous. MoneyIn and MoneyOut are in the main form whilst Total is in the footer. All I want is to be able to put in a value in MoneyIn or MoneyOut and for the Total to update. Problem! I dont have a clue where to start! :rolleyes:

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Jun 20, 2006

Here is a part of my database nicely zipped for you guys to help me with.

whats happening is when i click the totals button whatever the highest cost option that is selected with a "Y" should be displayed in the totals text box.

example:

Installation of heating system - "Y"
Replacement Kitchen and Bathroom - "Y"
Total should be "�90"

The code behind the button works fine with every choice but not the installation of the heating system. When this is selected "Y" the code seems to be ignoring it.

Any help will be much appreciated.

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Dec 6, 2005

I am trying to type a code based on 1 & 2 criterias. However, I am having a problem on the first criteria because it is adding 8 hours when it shouldn't. Can someone help to either fix my code or write a new one? Thank you very much!

Criteria 1: If the day_of_wk is 1, calculate time-reg_time/60, If the day_of_wk is 1 and time is less than 0, calculate time-reg_time/60+24

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My code: pre: IIf([day_of_wk]="2",[time]/60,IIf([time]<0,([time]-[reg_time])/60+24,([time]-[reg_time])/60))

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Jan 25, 2006

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i need to get answer in HH:MM (24:01)

pls help me

thnx best regards
ibu

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Jan 25, 2006

i have two date/time fields

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i need to get answer in a textbox as 24:01 (hh:mm)

pls help me

thnx best regards
ibu

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Feb 8, 2006

Hi all,

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thanks
Senthil.

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Feb 11, 2007

I want to resolve date calculation problem.

I have one form field with users total sum of lenght of service (format of field looks like yy/mm/ddd) in another form field I have data with users date of employment in a firm.
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Apr 5, 2007

Hey,

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When i do the same thing in Access2003, it goes rapidly every time.

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Rik

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Apr 19, 2007

Hi All

I am seeking the solution to a problem with calculating stock adjustments

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JobCode 25WE = 1 x power point, 25metre cable , 9 x clips

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Thanks in advance
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Jul 18, 2007

i Want to make something in access for my job but i dont know how ... I have many years to use this software.

The idea is to have a FORM with many boxes .... http://img329.imageshack.us/my.php?image=58740895rq8.jpg

when i press product 1 and then product 2 i want to calculate, to give me the sum ....... i ll need to have many products i want to make calculations show i ve create one table from which i want to take the prices ...is it possible or it can be with an other way ?? :confused:

http://img525.imageshack.us/my.php?image=90673797oy7.jpg

Does anyone have a similar to saw me? :o

I need ideas !!!!

thanks!!!!

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