How to return all data when no variable specified in SQL WHERE?
This is my first time programming in ASP :). Just hit a bit of a road block and wondered if someone could steer me in the right direction!
I have a table of data which is populated from an SQL DB. At the top I have a number of drop downs which allow users to filter the table results. I have my SQL statement laidout like this:
mySQL = "SELECT * FROM INCIDENTS WHERE H#DEPT1 ='" & department & "' AND WHERE H#USERNAME1 ='" & username & "' "
This works great as I have a submit button which passes the variable into the SQL WHERE clause when the page loads. If I fill out all the drop down boxes it works perfectly.
However.. what can I do if I wanted to leave one of the drop downs blank? In this case I would like to return all the data for that filter. Is there anyway I can manipluate the WHERE clause so that it works like this:
WHERE H#DEPT1 ='" & department & " OR IF NOT SET & department & SHOW ALL RESULTS ?
Any assitance would be most appreciated! :D
The best way is to not even include the condition in the SQL if it's not specified.
What is this "H#" bit? That's not a valid SQL Server field name, with the # in it.
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