Question

I have a database called catalog, it has two three columns one is just the key field, the other is a integer called “code” and the other is a NSString called “make”.

My app allows the user to type in a code to search for any makes that have that code, so there is a uitextfield where they can type the code then the user presses a uitextfield cell that loads a new uitableview onto the navigation stack I want to display any makes that have the code that was entered in the previous view here.. I have most of the code done as I am following a great guide “professional iphone and ipad database application programing” however in the step I am doing they just show all the data not a restriction of data, I would like to know how to do this.

here is my sql request string

const char *sql = "SELECT catalog.make From catalog where catalog.code =???

I would like to know what should come next, how to I execute this statement with the code the user has entered in the uitextfield?

any help would be greatly appreciated.

Answer 1

I’d just make the SQL statement into an NSString, it’s easier.

Assuming the UITextField you’re collecting data from is an IBOutlet called myText:

NSString *sql = [[NSString alloc] initWithFormat:@"SELECT catalog.make FROM catalog WHERE catalog.code = %@", myText.text];
const char *cString = [sql cStringUsingEncoding:NSASCIIStringEncoding];
[sql release];