valntyn via dbmonster.com

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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lew

Pseudocode:

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

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

-- Lew

lew

Sorry, I focused on the wrong variable:

Pseudocode:

if ( empty( bgn ) OR empty( nd ) )
SQL = "SELECT * FROM Construction WHERE County='" & cnty & "' AND
Route='" & rte & "' "

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

-- Lew

hansh

"valntyn via DBMonster.com" <u29706@uwe> schreef in bericht
news:6ed7203954842@uwe...


How about ...
FLAG = empty( bgn ) OR empty( nd ) ? 'true' : 'false';
SQL = "SELECT * FROM Construction WHERE County='" & cnty
& "' AND Route='" & rte
& "' AND ( " & FLAG
& " or Begin<=0" & nd & " AND Ending>=0" & bgn & " )"

Note: assuming numerical input for nd and bgn, thus prepending 0.

Leaving out vowels in variable names ... Hebrew background?

HansH