|
Hi guys.
I have a database of R/C Helicopters.
The user wants to filte down on a specific helicopter configuration.
So the GUI has a screen with 5 dropdownlists.
ESC (Electric Speed Controller), Motor, Gyro, Engine and Servo.
Lets say the user wants to find all helicopters using a Z80 motor. So,
he selects that from a drop down, and the rest remain as 'Select
one..'.
So I pass paramteres to my stored procedure....
sp_find_aircraft esc=0, motor=67, gyro=0, engine=0, servo=0
(67 being the ID of the component he wants to look up.. in this case,
the Z80 engine).
How do I create the where clause for this? My select looks like this:
SELECT ua.id, c.[Model]
FROM dbo.[UserAircraft] ua
LEFT JOIN dbo.[UserAircraftComponent] uac1 ON uac1.useraircraftid =
ua.id
INNER JOIN dbo.[Component] c ON c.id = uac1.componentid
I have no where clause yet, as I'm not sure how to handle dffering
selections.
In the above example, my where clause would simply be:
WHERE c.id = 67
And that would return me a correct recordset of all UserAircraft
having a Z80 engine.
But now the user wants a result with the Z80, as well as maybe a GY401
gyro... so now I pass:
sp_find_aircraft esc=0, motor=67, gyro=145, engine=0, servo=0
I kinda need a dynamic where clause....
Is this possible?
A kind of:
IF @gyro 0
add 'OR Componentid=145
type of thing.
| 
