Changing Zero Length To Null

Nov 7, 2005

in my db, all fields that aren't required default to a zero-length string.

In some reports (like mailing labels) I want the rows that contain no information (like the second Address line) to "shrink". I set all my properties to "can shrink" etc., but of course it's not working, because the value of the "empty" fields is "" instead of Null.

Is there a way I can write an IIF statement that will set the value of the field to Null if it contains a zero-length string?

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Changing Allow Zero Length Default

Aug 18, 2005

Hi

Is it possible to change the default table setting in Access 2000 for the 'Allow Zero Length' property from No to Yes? Or does anyone know any code that can be run to change any existing fields with Allow Zero Length = No to = Yes?

Any assistance would be much appreciated.

Thanks.

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Changing Field Length In Large Database.

Feb 6, 2006

I am trying to change a field lenght of a large database (access 97) It is at 50 right now and want to change it to 25. When I try to change it and save the table I get a error when the bar is about 3/4 the way accross the bottom.

Microsoft can't change the data type - there isn't enough disk space or memory.

then

not enough space on temporary disk

This is error 3183. In the help it says that the TEMP DOS enviroment variable location doesn't have enough space. (summerising). Now I have a 100+gb drive that isn't close to being full. I also changed the MaxLocksPerFile registry dword to 8,000,000 as my table has around over 3 million records. I have tried this on a xp and 2000 machine same results. Next I am going to try it on a 98 machine. I could do it by breaking up the table into 2 differnt ones and do each one individually but there is an autonumber field used as a reference number (I know I know). So that would screw up the numbering scheem (Yes I know there are ways arund that also). this database is about 400MB

Couple of questions
1. Is there a way around this? I have not found a solution on line yet.
2. Will lowering the field length make the database smaller (the data that is in there now is less than 25 charecters and the field is set to 50.) I have gotten mixed info on this. there are a few fields I would like to reduce.

Thanks
sam

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Forms :: Changing Format Of Field Based On String Length

Jun 11, 2014

I have a continuous form that displays data from a table. What I am trying to accomplish is to change the format of the field if the string length is equal to 11, to "@@@-@@@-@@@@-@". Otherwise if it is greater or less than 11 then no format.

I have tried it using code:

If Len(Me.FormFieldName)=11 Then
Me.FormFieldName.Format = "@@@-@@@-@@@@-@"
End If

Is it even possible and if so is my syntax correct or am I way off base?

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Changing Font Size Of Labels Depending On Text Length

Jul 28, 2014

I have a report that prints labels (similar to avery labels) which pulls data from a query. These labels are all unique and vary in length. Due to the length variance, I want the font size to get smaller for labels with more characters. I want the text to go down to another line when necessary.

In my report under the OnPage Event Procedure I wrote this:

Private Sub Report_Page()
If Len(Text2) > 20 Then Text2.FontSize = 8
If Len(Text2) > 10 And Len(Text2) < 21 Then Text2.FontSize = 10
If Len(Text2) < 11 Then Text2.FontSize = 14
End Sub

This works to some degree but the problem is that once there is a longer label, all of the proceeding labels are resized & the longer label that should have been resized was not.

Is there another place I should be writing this code? I looked under events for the textbox but there doesn't seem to be anything that would work since none of them would trigger when printing labels

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Changing Query To Show Null Values

Jun 26, 2006

Hi,
This query will allow me to view payments that are made between 2 dates. I would like to know how to flip the query around so that it gives me the payments that have not been made. I think this would be described as returning the null values?

The SQL code i have at the momnet is:
SELECT download20060602.Date, download20060602.Description, download20060602.Amount, Members.FirstName, Members.[Mid Name], Members.Surname, Members.[Memb No]
FROM Members LEFT JOIN download20060602 ON Members.description = download20060602.Description
WHERE (((download20060602.Date) Between [Enter Start Date] And [Enter End Date]));

Any help or ideas would be fantastic.

Cheers
Phill

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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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Field Max Length

Jul 17, 2005

Um, well hi

I am a VB programmer, and need a database for a diary program i am making. Only i need more then 255 characters in one of my fields.

Is this possible, if not, what are my options.

Thank you
ILMV

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String Length.

Aug 19, 2005

I have a fax number field iwhich has a mask. +(000)-00-000-000 in a table of many records.
The problem is that every record has a number in the first part of country code +(001)which must have come there by mistakes, few records have complete and true fax numbers.

I need a query that can Update this Fax_Number field where the length of the string is less than 7 digits.
Some thing like UPDATE Contacts SET Contacts.Fax_Number = ""
WHERE ((Len("Fax_Number")>"6"));

How can i do this. Thanks.

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Integer Length

Aug 30, 2006

I have a field, integer, that needs to be exactly 6 characters long, no more, no less. How would I set this?:p

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Field Length

Mar 12, 2007

Hi,

I'm looking for some advice on what the maximum field length is in Access. Which option will provide the maximum length. I am wanting the field to capture both numbers and text.

Any pointers in the right direction would be much appreciated.

Thanks in Advance.

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Max Length Of Query?

Jul 4, 2005

What is the maximum number of characters which can make up a query?
Is it 255?

J-F

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255 Max Text Length?

Aug 25, 2005

is there a way to allows more that 255 chars in to a text field in a mdb? or do i have to do something like save it to a test file then link to the text file (cos i really dont know how to do that :P)

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Length & Width

Dec 2, 2005

I've notice a situation in a few databases. One is where we track sidewalk construction. There are two called fields LENGTH and WIDTH. In my report I have text box with the control source =[Length]*[Width]. However it returns some bogus number. If I change the field names to something else like Width1, it works fine.

Any ideas?
Thanks,
SKK

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Length Of A String??

Oct 18, 2006

How can I extract a string and from a textbox and make out that it is x (here x can be any value, e.g. 15) characters long??

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Variable Length Records

Mar 10, 2006

Hello

Would it be possible for someone to explain to me how to program a variable length text fields in a table, as opposed to a fixed length field?

Also - what would be the disadvantage of using this type of field ?

Thanks
Shellie

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Memo Field Length

Mar 26, 2007

Hello,

If I read the documentation then memo field in a Access table can be 65.000 chars long.
I have three memo fields in a linked ODBC table which is filled by a append query from SQL-server database. The text in these field is cut off by 255 chars.
Does somebody know what the cause of this can be?

1. Is there a limitation/property where I can configure the length of Access memo field? DAO? I have read something about this but I don't understand this.

2. How can I trace that everything is send from the source? Maybe it's cut off at the source site. On this moment I don't know something about a Linked tabel.
Is there a sniffer or trace tool so that I can see what kind of data is realy send?

Thanks in advance

Nico

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Storage Length Of Field

Apr 2, 2008

Hi everyone,

I am using a table that stores data and one of the fields is just a text field with a maximum length of 10.

However, when I store the data in the field, if I only enter 5 letters in it, it stores the 5 letter word correctly but followed by some spaces (I assume 5 spaces but I may be wrong.

I cannot figure out why does anyone know why?

If not, then can I trim the field if I use it in a query/report?

Thanks.
Gareth.

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Adding New Fields - Allow Zero Length

Dec 15, 2005

All,

I am using an Make-Table query to add many new fields to a Table using Fieldname: "".

However, when I use this, it sets the Allow Zero Length to No.

Is there code that I can use to stop this happening?

I am using this method for multiple fields and across multiple tables.

Your help appreciated,

Jem

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Query Specific Length

Feb 9, 2006

I have a query in which I need to pull all values from a field that is exactly 10 characters in length (Alpha or Numeric). Can anyone help me with this?

Thank you!

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Do I Need Zero Length String Query

Jan 22, 2007

In a database that holds membership records, I have three years worth of info relating to membership dues paid. I want to extract who has not paid a membership fee for the last three years, so we can strike them off our records, i.e. I have members' personal details, but there are no records in the payments table, nothing has been entered because they just have not paid. Do I run a query looking for a zero length string? Just how do I achieve this? Have I done right in not entering anything?

Help appreciated!

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Zero Length Strings In A2007

Apr 23, 2008

I posted this before, but didnt get any answers

In A2007, has anyone had a problem with checking whether a text field is equal to "" in a query

ie - select * from whatever where targetfield = ""

-----------
this generated a type mismatch (I actually had <is null or ""> in the query definition, but it was the "" it didnt like.

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Code Length Too Long On One Row Help!

Apr 14, 2008

I have written a bit of code in a Microsoft Access 97. The code basically creates a Microsoft outlook message. I am trying to add in the message that I want to display in Outlook by using the MyMessage ="" command. But the message I want to add is too long to fit on one line of code - I get to the end of the line and can no longer type any more! I have tried to add the second part of the message to the next line but all I get is an "Expected line number or label or statement or end of statement" error message. I think this might be because access keeps putting a " at the end of the first line - every time I remove it and add the " to the end of the second line it keeps adding it back to the end of the first line!

any ideas would be gratefully received!!!!!

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Export Zero Length String As .csv

Jan 26, 2007

I am using VBA code to export a small table as a .csv file, which is no problem, except that the customer insists that where a field is blank, the .csv file must contain a pair of double quotes.

In other words, I can produce this:
"Field1","Field2",,"Field4","Field5"
but they insist on this:
"Field1","Field2","","Field4","Field5"

In the table design, I have made the default for each field = "", but I still can't seem to force the double quotes into a blank field.

Any suggestions will be welcomed.

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