Is Null Fields - Message Box

Jul 25, 2005

Does anyone know a nicer way of writing this. I basically want the form to quickly check all the fields to make sure they are filled in when the print button is clicked, different fields need to be filled in for different print buttons so i used this which works but seems very messy.
Private Sub Command0_Click()

If IsNull(reg) Then

MsgBox "You must enter Reg", vbCritical, "Data Required"

Else

If IsNull(make) Then

MsgBox "You must enter Make", vbCritical, "Data Required"

Else

If IsNull(model) Then

MsgBox "You must enter Model", vbCritical, "Data Required"

End If
End If

Exit Sub
End If



End Sub

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'Invalid Use Of Null' Error Message

Dec 12, 2007

The following query runs without issues.

SELECT Payment_Mth, CDate(Payment_mth) AS Expr1
FROM Table1
WHERE (((Payment_Mth) Is Not Null
And (Payment_Mth)<>"Does not apply"
And (Payment_Mth)<>""));

I get a set of data along the following lines
September 2007 01/09/2007
October 2007 01/10/2007
September 2007 01/09/2007
etc.
which is what I want.

However, when I try to filter to show only a particular date, I get an error

SELECT Payment_Mth, CDate(Payment_mth) AS Expr1
FROM Table1
WHERE (((Payment_Mth) Is Not Null
And (Payment_Mth)<>"Does not apply"
And (NBReferral.Payment_Mth)<>"")
AND ((CDate(Payment_mth))=#01/10/2007#));

An 'Invalid use of Null' message is displayed.

What am I missing, here?:confused:

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The Notorious Error Message: Can't Set Value To NULL When CheckBox Property = FALSE.

Sep 12, 2005

Hi,

My problem is this: Whenever I enter something into the form other than first choosing the date from the DateTimePicker's drop-down list, I get the notorious error message: Can't set value to NULL when CheckBox property = FALSE.

What I can conclude is that the DateTimePicker can seemingly not return a null value to the database. A possible solution was given at this site: http://www.dotnet247.com/247reference/msgs/54/270422.aspx

I however, have no idea how to apply this to my form.

Can anyone help?

Thanks ahead!

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Create Error Message For Form Search Results Being Null

Sep 21, 2012

I have a form and when it's opened you get 3 different search questions to answer or leave blank. My question is.... If a search parameter is entered but no results are found to match it, how do I create an error message telling the requestor "No Data Found"?

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If A Make-table Query Result Is Null, How To Have A Default Message Appear In Table ?

Jan 21, 2005

Hi everybody,

Beginner here needs help !

I'm building a make-table query for which if the result is null (no record correspond to the set of criterias), a default message like "there was no activity during the period" would appear in the table (not a message box...I need the message in the output table). The best I could think of is an IIF function but it doesn't seem to work... Is there any way to do this without using VBA?

Thanks in advance !

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Error Message-cannot Define Fields More Than Once

Dec 16, 2004

I'm trying to add filds to a table, and when I try to save I get the error message: cannot define fields more than once. The problem is, there are no duplicate field names. I've run compact and repair (several times) with no change.

Any ideas?

Thanks,
Mary

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Is Not Null / Multiple Fields

Nov 17, 2011

I am creating a query to scrub out certain records from a table. How would I exclude records where BOTH the "Phone" and "Email" fields are null? I do not want to exclude them if "Phone" field is not null but the "Email" field is, or vice versa.

I currently have tried WHERE ((([RAWCancels]![Phone number] And [RAWCancels]![Email]) Is Not Null)), but it is not working.how to write the criteria.

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Leave Fields That Are NULL Out Of Query

Apr 26, 2006

Hi,

I have 2 tables... one with 'answers' (on questions) and one with these 'questions'.
Now I want to show the questions with their answers on a rapport
(based on a query) .. but only these whereby the answer-field is NOT NULL..

So I have already:
ansques1: IIf([answers.1] Is Null;Null;[questions.1]+" "+[questions.1])

But now if the answer-field is NULL, then the ansques-field is also NULL...
I want if the answer-field is NULL, to have no new field.. like ansques1.. just want to leave it out of the query... can someone help me with this?

Thanks in advance,

Ankie

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Checking For Null In Multiple Fields

Oct 19, 2004

If I have about 9 Text fields, How would I go about checking to see if all of the text fields are empty, then hide all the fields, but if any of them have anything in it, show them all. Here is my code, but it doesn't work:
Code:If SpecAgent = "" And SpecArea = "" And SpecBenefit = "" And SpecCompany = "" And SpecCSR = "" And SpecDoctor = "" And SpecHospital = "" And SpecPlan = "" And SpecRx = "" ThentglNo = TruetglYes = FalselblSpecAgent.Visible = FalseSpecAgent.Visible = FalselblSpecArea.Visible = FalseSpecArea.Visible = FalselblSpecBenefit.Visible = FalseSpecBenefit.Visible = FalselblSpecCompany.Visible = FalseSpecCompany.Visible = FalselblSpecCSR.Visible = FalseSpecCSR.Visible = FalselblSpecDoctor.Visible = FalseSpecDoctor.Visible = FalselblSpecHospital.Visible = FalseSpecHospital.Visible = FalselblSpecPlan.Visible = FalseSpecPlan.Visible = FalselblSpecRx.Visible = FalseSpecRx.Visible = FalseElsetglNo = FalsetglYes = TruelblSpecAgent.Visible = TrueSpecAgent.Visible = TruelblSpecArea.Visible = TrueSpecArea.Visible = TruelblSpecBenefit.Visible = TrueSpecBenefit.Visible = TruelblSpecCompany.Visible = TrueSpecCompany.Visible = TruelblSpecCSR.Visible = TrueSpecCSR.Visible = TruelblSpecDoctor.Visible = TrueSpecDoctor.Visible = TruelblSpecHospital.Visible = TrueSpecHospital.Visible = TruelblSpecPlan.Visible = TrueSpecPlan.Visible = TruelblSpecRx.Visible = TrueSpecRx.Visible = TrueEnd IfEnd Sub

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Records With Null/blank Fields Only!??

Jun 8, 2005

I'm working on a db logging replies to a questionnaire. Judging by the responses I am receiving it appears that some sections are not completed at all. I need to be able to include these blank responses when it comes to analysis.
My design splits the questionnaire into sections, each section has a data entry form with its own underlying table. Each table has a primary key (autonumber field) which relates to each organisation that has replied.
If an organisation has failed to complete a section, I still need to create a new record in that section(table), triggering the autonumber field, hence referring back to the organisation.
I know I haven't explained this very well, but if anyone can make sense of what I'm saying and can give me any suggestions on how to make this happen, I would be most grateful.

In anticipation of your replies

Ride

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Modules & VBA :: Show Pop Up Message Depending On 2 Fields Value Differences

Oct 7, 2014

I have 2 fields on my form service interval combo box and vehicle mileage text box I m trying to create a pop up message on there values

if service interval is 12,000 and the mileage entered in the vehicle mileage is over 12,000 then show pop up message.

this works but I'm sure its wrong don't no why I need the -1 anyways here's what I have

Code:
If Me.Vehicle_Mileage.Value > Me.Cboserviceinterval.Column(1) - 1 Then
msgbox "test"
end if

Now my problem what I can't get it to work . I still want the pop up message, if say the service interval is 12,000 and mileage entered in the vehicle mileage is 1,000 miles below the service interval I still want the same pop message but if 2,000 or more below service interval then no pop up message .

I have tried a number of sequences with no avail....

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Make A List Of Fields That Aren't Null

Nov 26, 2007

I have a table that has several fields that contain a date if a user is licenced to use a certain piece of equipment and is null if not. Each recor has other data in it such as name, and a unique identifier (numeric). What I want to do is make a list of the fields which have a date in them to create a licence for what they can operate. Any help on which way to go...pretty new at access.

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Replacing Null Values In Text Fields

Sep 10, 2007

Hi,

i have created a query from just one table, which is basically a list of Financial transactions.

There is a field called supplier code, in this query.

Most of the transactions have a supplier code, but there are a few that don't.

i've got another table that has the supplier name against the supplier code.

i want to bring this table into the query, so that i can show the supplier names against those records in the query that have a supplier code.

when i add this table and link the 2 tables up and put the supplier name into the query. The query excludes the records with no supplier code.

This is presumably, because they contain null values.

I've been reading about the Nz function and i think this is what i need to use.

i've tried this, but it still only brings through the records with a supplier code and not all of them.

How i've done this is to go into the design mode of the query and in the column that would have null values i have click "build"

in here i have the following formula.

Nz([Supplier Name],"No")

Am i doing anything wrong?

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May 1, 2013

how to run a report to show a Client if one or of the following fields are blank or unchecked(Yes/NO?

Fields
Client
Assessment Date(Null)
Placement Fee Paid(Check Box)(No)
TJ Completed(Check Box)(No)

So basically, if one of the above fields are null or unchecked, please show in the report. I'm sure it's easy but to do, but not up on coding.

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Queries :: Only Show Records Where Any One Of 6 Fields Is Not Null

Mar 17, 2014

I am looking to collate marketing data from different areas of our DB into a Marketing Hub. We have to collect various feedback at different times, if a client on a programme completes a course, they give feedback for that course.13 weeks after a client completes the programme we have to get them to complete a destination survey. On both these forms it asks would they be interested in doing any more courses. This data is then stored in the Courses table and Projects table respectively.

I want to create a query to become the record set for a new form which only shows those students that have stated they would be interested in doing other courses.Five of the options or Yes/No fields, and one is a text field (which courses, other essentially).How does one do a query that only shows records where any one of 6 fields is not null?

Code:

SELECT Students.ID, Students.[First Name], Students.[Last Name], Courses.[Sage Accounts], Courses.[Sage Payroll], Courses.[First Aid], Courses.[Food Hygiene], Courses.[CV Services], Courses.[Interview Skills], Courses.[Which Courses]
FROM Students INNER JOIN Courses ON Students.ID = Courses.ID;

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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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Queries :: Calculating With Null Fields In A Query

Oct 2, 2014

My training database requires me to identify each training record in the tblEmpTrainHist table as either "Compliant" or "Delinquent". I thought a simple calculation in my query:

RecordStatus: IIF([DateReceived]<=[DateDue],"Compliant","Delinquent")

would do the trick. However, I did not consider the records where the employee has not yet completed the training and the field [DateReceived] is Null. There are two considerations: those employees who have no [DateReceived], but have not yet reached the DateDue (Compliant); and those employees who have exceeded the DateDue (Delinquent).

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Dealing With Null Values When Trying To Average Across Fields

Jan 20, 2012

I have a large amount of field data that was taken by a data logger. Specifically, The datalogger has five temperature probes embedded in soil, and takes a measurement automatically once every hour for each probe. So the table has a Time field, and then a Temp1, Temp2,... Temp5 field. I need to be able to average the temperature fields. This within itself is easy enough, I just tell the query to find (Temp1+Temp2+...+Temp5)/5. However, unfortunately, because it is field data is is very common for one (or more) of the ports to be malfunctioning at any one measurement time for a number of reasons.

If, for instance, Port one does not have a value, then the formula I entered will not work, as it can't add a null value to numbers, and otherwise It would be dividing by five whereas there were only four values to average.

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Error Message To Display On Entry Of Duplicate Value With Two Fields As Index?

Jun 27, 2011

I was using the following code on a field (ItemCode) that was indexed to prevent duplication of records. The intent is that the user will get an error message that a duplicate exists before they enter all the data for the record and get the built in error message that Access 2003 provides when an index violation has occurred.

Code:
Private Sub ItemCode_BeforeUpdate(Cancel As Integer)
Dim Answer As Variant
Answer = DLookup("[ItemCode]", "tblQuestions", "[ItemCode] = '" & Me.ItemCode & "'")
If Not IsNull(Answer) Then
MsgBox "Item Code already exists" & vbCrLf & "Please enter unique Item Code.", vbCritical + vbOKOnly + vbDefaultButton1, "Duplicate"
Cancel = True
Me.ItemCode.Undo
Else:
End If
End Sub

Now, the index for this is based on two fields (ItemCode and Question Group). I would like to display the same message before update but don't know how to include the second field in the syntax.

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Error Checking For Table Fields Null Value Constraint

Aug 17, 2005

Hi all. I want to check for not null value constraint for all tables in database . I tried the following but when i run it i get the following error:

Compile error:
Invalid Next control variable reference

I be happy if some one one help me fix this error.if i remove the bold lines the program workes well but it does not put not null for table fileds that requries value.

picture of the output without the bold part

http://i5.photobucket.com/albums/y1...007/notnull.jpg


Code:Option Compare Database''This module displays field name and type in a massage boxFunction ShowFields(pTable As String) As StringDim db As DatabaseDim rs As RecordsetDim I As Integer''Dim j As IntegerDim n As Integer''Dim NL As StringDim strHold As String, ST As String''Dim x As Variant''NL = Chr(13) & Chr(10) ' Define newline.Set db = CurrentDbSet rs = db.OpenRecordset(pTable)n = rs.Fields.CountReDim x(n - 1, 1) As String'''ST = "Create Table " & pTable & vbCrLf''adding Create table and table name to statementST = "Create Table " & pTable & vbCrLf & "("For I = 0 To (n - 1)For Each fld In tbl.Fields ST = ST & rs.Fields(I).Name & " " & FieldType(rs.Fields(I).Type) & "," & vbCrLf If fld.Required = True Then ST = ST & " NOT NULL" & " " Else ST = ST End IfNext Irs.Closedb.CloseSet db = NothingShowFields = ST '' returns the fields name to main functionEnd Function

on click even code

Code: For Each T In db.TableDefs '''Skip the system tables If Left(T.Name, 4) <> "MSys" Then ''' this line determines the primary key of the table ''' by calling GetPk function from module pk = Left(GetPK(T, db), InStr(1, GetPK(T, db), "<-") - 1) cont = cont & ShowFields(T.Name) & vbCrLf & " primary key " & "(" & pk & ")" & vbCrLf & ")" & vbCrLf End If Next T ''' This line of code post the generated table statment to a massage box MsgBox cont

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Queries :: Give All Null Values 0 In Calculated Fields?

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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Forms :: Return To Form If Fields Are Null On Close

Sep 4, 2014

I have a bound form that is used to enter company info (address, name, category...etc). When the user closes the form, if Company name, province or category are left blank, I warn them with a message box asking if they want to exit and undo changes, or return to the form to fill in the missing info.

When they choose the option of returning to the form, I get 2 errors. You must enter a value in "tblCompanies.category", and "You can't save the record at this time, do you want to exit without saving?". If I click "No" on the second warning, focus is set to the missing data control and I can continue working.

How can I prevent the record from being saved when I choose to return to the form to fill in the blank records?

Code:
Private Sub Form_BeforeUpdate(Cancel As Integer)
On Error GoTo Form_BeforeUpdate_Error
Dim Response As Integer
' Determine if required fields are populated.
If IsNull(Me.txtCompanyName) Then
Response = MsgBox("Company name is a required field. Do you wish to discard changes and exit?", vbYesNo,

[Code] ....

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May 16, 2013

I am trying to create a clean database and code to generate a report.

I am trying to count the number of null fields in one of my queries:

However, because of this expression, I cannot carry other fields with it. So the end result looks like:

But I would really like it to spit out the following information:

Total Not Fixed: 241
Department: Sustaining Eng

is there a way to create an SQL query to simply add data: I have tried the following:

Code:

ALTER TABLE qrySustainingEngNotFixed2 ADD Dept TEXT(25)
Insert Into qrySustainingEngNotFixed2 (Dept) Values (Sustaining Eng)
SELECT TotalNotFixed, Dept
FROM qrySustainingEngNotFixed2;

The above isn't working. Keep in mind that I want this is just for display purposes. I pondered making a custom table and then making a Union Query, but I'm trying to do this all in one SQL statement.

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Sep 22, 2014

I have a form called PAF_Assignment and on this form there are many textboxes for editing. After all fields are entered, the user clicks on a button and this button populates the PAF_Issued_Date field with the actual date.

Then I want to disable (enable=False) all fields on this form once there is a date on PAF_Issued_Date as I don't want any user to make any changes after submitting it, although the user would still be able to read the information submitted.

I have tried the following...

PAF_Assignment Form AfterUpdate Event
If Me.PAF_Issued_Date=Not null Then
Me.FieldName1.Enabled=False
Me.FieldName2.Enabled=False
Me.FieldName3.Enabled=False

[Code] ......

However this is not working, there is no error message or anything but the fields remain enabled with the date...

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Jul 29, 2013

I have a table (ComponentT) of different device components a user can select from ( generators, gearboxes, etc.)

The table has 3 fields - ComponentName, ComponentType, ComponenentDetails

I have a query returning all the ComponentDetails values.

I then have a combobox that uses this query as a row source.

The user can select different components they want from the combobox. Once something is selected, it is added to a new table - UserSelectedComponentsT

As a device can have only one gearbox or one generator etc. I want a warning messagebox to be displayed if the user tries to select a generator from the combobox when one has been previously selected.

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Queries :: Multi-field Query Not Working When Some Fields Are Null Value

May 22, 2013

Access 2010. I've had to learn it at work because our DBA was let go and I was the only one willing to give it a go. Read a book or two and picked up some stuff on the internet.

Here's my problem:
I have a simple table -Employee with 4 fields. FirstName, LastName, Office and JobTitle. I have form called Form1 that has 3 control fields cboJobTitle (a combo box that is populated by a query that finds all the unique values of that field in the Employee table), cboOffice (same as above) and txtName (a text box to allow user input) that are used as the criteria for a multi-field query triggered by a button at the bottom of the form. The idea being that you could do a search using this form to find all the employees in one office or all the accountants in one office, or any other combination.

The main search query has the following criteria for each field -
Like [forms]![Form1]![cboOffice] & "*"
Like [forms]![Form1]![cboJobTitle] & "*"
Like [forms]![Form1]![txtName] & "*"

It works great...until I enter a record where one of those fields may be null, such as if I leave the JobTitle blank.
If I have two employees in an office in one city and then do a search for all the employees in that office, it only returns one record and ignores the one that has the null value in the JobTitle field.

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