Modules & VBA :: Testing A Field In Table For Null Within IF Statement
Aug 30, 2013
I have a form with two list boxes on it: listAllBANANA and listActiveBANANA
The listboxes are populated from tblBANANA. Active is defined by the tblBANANA field "ResponseDate" being Null.
Also on the form is a CloseBANANA command button. When pressed with no selection, it opens frmCloseBANANA to the first record. If a BANANA is selected in listActiveBANANA, the form opens to the selected record.
Now comes the tricky part: if a BANANA is selected in listAllBANANA, I first need to verify they have an Active BANANA selected, before opening the form. I've poked and tested and searched and cut and pasted my little fingers off with no joy. What I've deduced is that I'm either messing up the syntax of the DLookup or I'm incorrectly referencing the selected record. There's also the third option that I'm going about this in entirely the wrong way.
All other code below works. If I delete or comment out the line in red, I have no issues other than I may open up a blank form because I'm trying to close a BANANA that is already closed.
Code:
'If a BANANA is selected in Active BANANA or All BANANA, open Close BANANA to that record. If not, open form to most recent record
Private Sub cmdCloseBANANA_Click()
If Not IsNull(Forms!frmGUI!listActiveBANANA) Then
I can't seem to figure out how to test a combo box null value.I try:
Code: If IsNull(Me.cboManufacturer) Then MsgBox ("Please select category") Else DoCmd.OpenReport "rptItemCategory", acViewPreview End If
This works if the combo box IS NOT NULL, but if null it gives me:
PHP Code:
Run-time error '3071': This expression is typed incorrectly, or it is too complex to be evaluated. For example, a numeric expression may contain too many complicated elements. Try simplifying the expression by assigning parts of the expression to variables.
I then tried:
Code: If IsNull(Me.cboManufacturer.Column(0)) Then MsgBox ("Please select category") Else DoCmd.OpenReport "rptItemCategory", acViewPreview End If
This works if the combo box IS NULL but if i've made a selection, it still gives me the message box as if I've selected nothing....
I have a table where some of the values of MyField are null.
I am creating a function that depends on the value of Myfield which I pass to a variable varMyField and am testing it with If IsNull(varMyVariable) but it errors. Have tried setting the variable as a variant but no difference.
Function Test(varMyField as variant)
If isnull(varMyField) then Dosomething, Else Dosomething Else End if
I have a table called login and inside that table is three columns: username, password and admin.
I have the username saved in a global variable called GsUser. How can i find the record in that table with the same Username as the string stored in GsUser and use that record for an if statement which sees if the value of the admin column is "Yes". Im trying to do it using VBA. Im not using a form where everything is bounded.
I'm new to programming with Access but am attempting to create a new field in a table with an new date based on existing fields in the table.
The current fields are [Frequency], integer, [Risk], text, [Last Audit Date], date/time, and the new field is [Next Audit Date]. [Frequency] is a calculated field based only on [Risk] and is equal to "5" if [Risk] is "Low" and is "3" is [Risk] is "Medium" or "High", and [Frequency] is blank if [Risk] is (thus far it has never been empty).
What I need the new calculated field to do is return "N/A" (or blank, or anything easily separated really) if [Frequency] is blank, or if [Risk] is "Low" or "Medium". If [Risk] is "High", [Next Audit Date] should be equal to [Last Audit Date] plus 3 years. When I try to save the code, I get this message: "The expression could not be saved because its result type, such as binary or NULL, is not supported by the server."
This is my code now: IIf(IsNull([Frequency]),"",IIf([Risk]="Low","N/A",IIf([Risk]="Medium","N/A",IIf([Last Audit Date]="N/A","N/A",[Last Audit Date]+Year(3)))))
When the input value for m is empty/Null, the response returned in the query is #Error. Problem is, any way I try to test for this in the function, it still returns #Error.The Watch for m reads "<Out of Context>" for these errors. Anyway to test/trap for this within the function itself?
Code: Public Function getAbsoluteMagnitude(m As Double, d As Double, Optional dUnit As String = "Mpc") As Double Dim absoluteMag As Double ' IsError(m) returns False ' IsNull(m) returns False ' IsEmpty(m) returns False
Trying to run a query using criteria to populate the query by looking at information from a field on a form, if from is closed I need that criteria to look at the table and return all date in table.
I am trying to write a statement and it returns: #Type!. I know what this means but it should not give this error.I have button that copies a certain number of fields to the clipboard. The one below is one of them. Here is the coding I am using that works:
Code: =Trim(IIf([CallingContactRel] Is Not Null,[CallingContactRel] & ": " & [CallingContact],[CallingContact]))
I would like to add the following condition to this code. I have a yes/no field called BookingNoteContactExcl. If this is ticked, it should exclude [CallingContact] from being copied, in other words, return "" in the code above.
I'm sending out an e-mail (see below). I want to add a cc addressee. However, sometimes the cc addressee will be blank. The e-mail works if the cc addressee field has data. It doesn't work if there isn't data. I tried an IIF statement but that didn't work. How do I can the object to work if the field is blank (null) or has data?
DoCmd.SendObject acSendNoObject, , acFormatTXT, Me.POCEmail, , Me.Email, , "Decoration Issue - Resolution Assistance", "Sir/Ma'am," & vbCr & vbCr & _ "We need your assistance in resolving the following decoration issue:" & vbCr & vbCr & _ "Issue/Necessary Correction: " & Me.Issue & vbCr & vbCr & _ "Member Information " & vbCr & vbCr & _
The following code doesn't check null condition in Scannedby field. The scannedby has text data type. The code gives me all the data where scandate=20130722 but doesn't check that scanned by can't be blank.
Code: rs.Open "select count(*) from BatchTBL2 where scandate=20130722 and scannedby <> null", cn, adOpenKeyset, adLockOptimistic j = rs.fields(0).Value
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.
A while ago I was tasked with creating a compliance testing database for my company's internal processes. For example: Payments, Hiring, Project Management, etc. Right now it's all done through Excel and is structured like this:
In short, a Test has many Items (based on company regulations, like "Has the project been approved by all superiors?"). For each Item you choose a few Samples ("Project A", "Project B" and so on), and for each Sample the user attributes a Grade ("In Compliance", "Not In Compliance", "N/A", etc).
In the Tests mainform, the user fills in the Test details (Tab #1), chooses which available Items he wants to include in his test (Tab #2), details the Samples which will be tested (Tab #3) and finally assigns a Grade to each Item/Sample combination (Tab #4).
Here's what I can't figure out:
In the attached DB, if we go into the "CT - Projects 2013" and check the Samples in Tab#3, we can see they match perfectly with the ones at Tab#4.
Now if we go into "CT - Projects 2014" and do the same thing, we can see that the Samples assigned to the Items in Tab#4 don't match up with the ones in Tab#3 at all. This is because the DB is checking only if the Samples' ItemIDs match with the ItemIDs in the test. But it also needs to make sure that the TestID, the Item's TestID *and* the Sample's TestID match, or it just won't work!
I attached a 2003 version of the database as the first upload used Access 2010.
how to make this two fields in my form to say Y or N if the field is Not Null. Like if the field is not null = Y Else = N for the two fields. I have a picture to show what i'm talking about.
My update statement is shown below. What this is to do is change the PGTIN record in PP TBL to the GTIN that is in the UPC TBL where the UPC Code on the form is the same as the UPC Code in the UPC TBL. I am getting the error message "can't find field..." I have double and triple checked the field names but cannot find my error. Both PGTIN and UPC Code are text fields.
I need to add a Yes/No field to a table. I know I can do this in design view. Next I want to loop through the table and set it to Yes if certain fields are null. What I need help with is the VBA looping part and setting the boolean field to Yes if the fields being checked are null.
I have created several queries that in turn create a report. I am trying to write some VBA script to make them execute correctly, however am having trouble with the loop function.
DoCmd.OpenQuery "Qry_SubjectColleaguesByDivision" Do Until Tbl_ReportSubject.RowCount = 0 DoCmd.OpenQuery "Qry_DataToTrainingReport" DoCmd.OpenQuery "Qry_DeleteDataToTrainingReport" Loop DoCmd.OpenReport "Rpt_TrainingDue28Outstanding" DoCmd.OpenQuery "Qry_ClearTrainingReport" Qry_SubjectColleaguesByDivision populates Tbl_ReportSubject with the relevant colleagues. Qry_DataToTrainingReport calculates the report data for the first user in the list and copies to Tbl_TrainingReport, Qry_DeleteDataToTrainingReport deletes their record in Tbl_ReportSubject. Qry_ClearTrainingReport clears Tbl_TrainingReport.
My issue is getting the DO UNTIL statement to work. I am trying to get the loop to finish when there are no records in Tbl_ReportSubject.I know the data structure does not seem robust based on how the data is handled, however this is to do with a) Legacy issues, and b) data importing from other systems.)
I'm trying to run this very very simple code but I get a Run-time error '3450' Syntax error in query. Incomplete query clause. For sure the problem is the variable I used as Table parameter but I cannot understand where my error is :
Private Sub cmdRunCheck_Click() Dim strSQL As String Dim strTempTbl As String strTempTbl = "tblCheckDoubles" strSQL = "DELETE * FROM " & "'" & strTempTbl & "'" CurrentDb.Execute strSQL, dbFailOnError End Sub
What is clear is that if I use this line the Sub is working smoothly
strSQL = "DELETE * FROM tblCheckDoubles"
Please do not tell me that it is not possible to use a variable as Table parameter....
I have a lengthy CASE statement in my database that displays specific text in a field based on the value of another. Simple stuff but for some reason it randomly will not work on certain values, and never the same one twice. Is there a commonly known cause for this? I have verified that the spelling and spacing etc. are correct in my code so that shouldn't be causing the problem.
I am trying to using an iif statement to pick up null values, but I don't know what to type in the function. I tried using "is null", but got an invalid message.
What value I should type in to get null value in the function below?
After hours of playing around i finally have my IIF statement working the proplem is now is that when the Value is null it gives a blank value on my Report. How do i get it to show the value of 0 when it is Null. can i use an isNull withen my IIf statement maybe nested what is best practice?
