query based on a field

[Paul]

I have a query with a parameter in the fied "Country" based on a field in a
form called "MainForm"
All works good if in the field i have a value like a name, let's say USA,
the query return all the records with order in the USA.
But it doesn't work if i want the query to return all the records where
Country is null.
If i have "Is Null" in the field in the MainForm it doen't work
Someone can help me?

 

[Brendan Reynolds]

SELECT TheTable.*
FROM TheTable
WHERE (((TheTable.Country)=[Forms]![Form1]![txtCountry])) OR
(((TheTable.Country) Is Null) AND (([Forms]![Form1]![txtCountry]) Is Null));

.... where 'TheTable' is the name of your table, 'Country' is the name of
your field, 'Form1' is the name of your form, and 'txtCountry' is the name
of your form control (text box, combo box, whatever).

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