Updating To A 'null' Or 'blank'

Mar 15, 2007

Hi. This might sound stupid but it is a real issue for us.
In our datafile some fields' values were updated to " " . A government entity wants the value to be blank, instead.

How do I change this?:confused:

Likewise, there are some instances where the reverse is true.

How do I change those?

Russ

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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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In a query, how do I return a blank or null.

IIf([Field1]=[Field2],NULL,[Field3]

They are all numerical values that I need to format into percentages however Field3 could contain zero so I can't replace Null with zero. I simply want to return nothing if Field1 is equal to Field2.

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Feb 21, 2014

I have a form with a subform. The subform is used to report a sales total, for today and for the month. When there are no sales today (a null result in one of the fields) the entire subform goes blank.

How can I make it report a zero in the field instead of blanking the entire subform?

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May 15, 2013

All. Using access 2010. I have a query that returns 92 records. When I put in the criteria for one field to leave out records with “approved” which totals to 9 records, the query only returns 10 records. It is not returning the records that are blank(not null) for that field. I want those records. Why is this happening and how can I get the blanks for this query?

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Sep 15, 2015

I am trying to show a certain subform based on whether or not a field is blank or null. This database is not owned by me--it's what we use to run queries and reports on the data on a centralized server for the library. It's not even in the same city--so changing the tables is not an option for me.

So, I have a subform (subform1) that is linked to the main form based on 2 fields (BibID and Item_Enum). The trouble is that the second field (Item_Enum) is sometimes blank, so the subform will not display. So I created another subform (subform2), which is a duplicate of the first one, but this time only linked on the first field (BibID). So, if that second field (Item_Enum) is blank, I want subform2 to display and subform1 to be hidden. If the second field (Item_Enum) is not blank, I want subform1 to display, and subform2 to be hidden.

I've tried putting the VBA code on different events for the form, but I can't get it to work consistently.

There are two problems, one of which I think I have fixed--but I would prefer a better solution. The VBA code doesn't run unless the form is newly loaded. I've tried placing the VBA code on different form events, but nothing works. I want the code to activate whenever a new record is displayed. The work around is that the form IS newly loaded every time the user scans a barcode for a new book. That works now, but if I need to change the way the user looks up new records, this might not work anymore.

The second problem is that the VBA code doesn't display subform1 when Item_Enum is blank. It doesn't display subform2 either, but that's the desired result.

Private Sub Form_Load()
If Me.ITEM_ENUM = "*" Then
Me.subform2.Visible = False
Me.subform1.Visible = True
Else
Me.subform2.Visible = True
Me.subform1.Visible = False
End If
End Sub

I've tried changing the condition to Me.Item_Enum = null, and changing the false/true results accordingly, but that didn't work either. In that case, only subform2 is visible, whether it should be or not.

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I am in the process of building Append Queries for new records, and I know I can do an Update Query to enter specific information. However, how can I update multiple records from a (externally sourced) linked table to fill in blanks of an existing table? I have created a query to identify records with 1 or more matching criteria which contain the blank fields. I now want to update those blank fields. The data in each blank field is different for each record (same type, just different data).

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Aug 4, 2015

The unbound Parent form has a listbox (SQL Server) , the selection updates the SubForm with a primary key ID. The Subform is a ReadOnly view from an Oracle Linked table. It populates with a Select * From Oracleview where ID = listboxID The code is at the link shown below update: The subform uses textboxes linked to the read-only record.

The main form can populate, no problem. However the SubForm data source is either populated OR is Null.

If it is Null, the subform stays blank. Two Objectives:

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[URL]

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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]
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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:
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LEFT JOIN [tblTable2]
ON [tblTable1].[SomeID] = [tblTable2].[SomeID]

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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:
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But there's a number of boolean fields in there, all requiring the same treatment.

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Jul 18, 2013

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See attached example: I have a client ID reference table that gets populated with forecast owner names (individuals responsible for the customer) from a couple of different sources. Sometimes there are names attached and sometimes the field is blank.

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Mar 13, 2007

OK, I have been searching around on the fourm for over an hour now...I give up. If this is some where else, I am sorry.

I have a database of maintenance data. There are several columns that are usually filled in, some records have some columns blank. They are formated text because they hold letters and numbers (see pic).

I am using a form to query the table...no problem. The form has text boxes the user filter down the data

The problem comes are with the results of the query. Any record that has a blank column is not retuned. I am using "Like" so that the user can enter in partial codes. I know "like" won't return "null" records.... Help!

Things I have tried:
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what else can I do?


Thanks

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Jul 5, 2013

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Code:
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'###################################
'This sub aims at combining the timesheet date and the start and end time into the fields [Start Time] and [End Time].
'###################################
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Dim rs As ADODB.Recordset

[Code] ....

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Apr 11, 2006

Hi guys,

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But now this no longer works, for no apparent reason?
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The only thing that could have changed is that i converted the database to 2003?

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Hello all,

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Thanks.

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e.g
myStringVariable = Forms!myform!EmpName
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"Using way too many quotation marks"
Brad

Thanks

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