I have an .asp page that passes four variables to another .asp page by using
an HTML form. A SQL query then runs against an Access database using those
four variables. The variables are: "cnty", "rte", "bgn", and "nd".

My current SQL statement is as follows:

SQL = "SELECT * FROM Construction WHERE County='" & cnty & "' AND Route='" &
rte & "' AND Begin<=" & nd & " AND Ending>=" & bgn & ""

This works just fine, but I would like to add the ability to make "nd" and
"bgn" Null (leave those fields blank on the HTML form), and then return all
records that match the "cnty" and "rte" variables. I have an SQL Query in
the Access database that does this perfectly but I'm having trouble getting
the same functionality on the web.

Any help is greatly appreciated!

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