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Null As Default Value For Yes/no Field

Null As Default Value For Yes/no Field
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I have the table set up with Null as the default value, and I'd like the Option Group on the form to show the value as Null for new records, but it's showing up False every time. I have one Option Button's value set as -1 and the other as 0. For new records, the default is always False. Just for fun, I opened the table in datasheet view and I don't see any greyed-out checkboxes. I see checkboxes True and False. New records have False in that field. Why does the property sheet accept Null as default value if it doesn't work? What am I missing?
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updating field whose value is the word NULL and Not a typical 'null' value

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I was given a table where in a text field, the value is NULL. (Actually spelled out like that.)
I need to convert that field to a date/time one. Which is being hindered by these values of NULL.

The problem is that when I put the word NULL in the field criteria spot, Access believes that I am referring to a value of 'null' and will not do the update.
I have done "NULL", NULL, =NULL, ="NULL", is NULL. and no success.
Please remember that the actual value is not 'null'. It is a text field that has the word NULL in the field.
 

Select a Null value in Unbound Combobox

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Using Access 2010.
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Any easy way to allow null values to be selected? I know it was possible with older versions of Access, but not any more.
 

Executing MySQL Statement

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Which the makes

INSERT INTO ticketchanges VALUES (NULL,46,DEFAULT,'few af ae a',NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,2);

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I am trying to set the default value of a textbox (for new records of course) to Environ("Username") by placing the following in the default value field in the textbox property sheet:

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When I go to a new record, my textbox is Null. I've tried with the equals sign and without the equals sign and both result in a Null value in the textbox.

I can type ?Environ("Username") in the immediate window and I get the expected result (my network username).

I can set the default value for the textbox in the On Current event and it works fine, just wondering why I can't use the default value field in the property sheet to do this. Other functions such as =Date() work fine in the default value field.

Any idea why this might not be working
 

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I am working on a project that collects data about the children. I am trying to put yes/no button on the form using table values. So far everything is going on good. I have a table call childgender where the default value needs to be empty but for some reason even though I delete default value access keeps showing the No value.

What I did is I created a field in table called Child1Gender with yes/no button which I changed value to Boy/Girl using ;"Boy";"Girl" as a format with combobox which values are -1 and 0 as access assigns as default value for Yes/No option. On the form I used bound multicheckbox which values are boy=-1 i.e. yes default value and Girl = 0 i.e.

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Due to database design, I am not allowing Null values in my tables. On my main form, the default value for the text boxes is " ". However, if the user removes the zero-length string, they will get a Null error.

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Access: How to intercept "You must enter a value in the [Field-Name] field"

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I have a table and a textbox referring to it that requires a default value of 0 (zero) if a value is not entered. The 0 is displayed on first opening my data entry form, but if I enter avalue, then delete it leaving a NULL value, when I try to update the field I get a standard Access error dialog advising "You must enter a value in the '[Textbox Field-Name]'field".

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I've received a csv file from a client that I've imported into Access 2010 in order to manipulate it into a format useful for another program I use.

A number of records contain what appear to be null fields that I'd like to set to default values, as they'll cause me grief down the track if they are left as nulls.

I've tried setting up an update query to set the default values for the fields of those records that appear to have null values.

The fields in the file that I want to change are called RD, YLD, CV, I'm, Ash, VM, FC and TS.

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