Question

hi folks i am developing an sqlite application in iphone.
since i am new to this application, i dont how to use the key and objects from NSMutableDictionary in the command of insert statement of sqlite.
for example , i want the insert statement in the following format.

INSERT INTO TABLENAME (COLUMN NAMES AS KEYS FROM NSMUTABLEDICTIONRY) VALUES (VALUES AS OBJECTS FROM NSMUTABLEDICTIONARY)
please help me out.
thanks

Answer 1

I have actually very little knowledge about SQL, but maybe something like this will help you:

NSDictionary *myDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
                              @"Foo", @"Bar",
                              @"Foz", @"Baz",
                              nil];

NSMutableString *keys = [NSMutableString string];
NSMutableString *values = [NSMutableString string];
for (NSString *key in myDictionary) {
    [keys appendFormat:@"%@,", key];
    [values appendFormat:@"%@,", [myDictionary objectForKey:key]];
}
// remove last ,
[keys deleteCharactersInRange:NSMakeRange([keys length]-1, 1)];
[values deleteCharactersInRange:NSMakeRange([values length]-1, 1)]; 
NSString *sqlQuery = [NSString stringWithFormat:@"INSERT INTO TABLENAME %@ VALUES %@", keys, values];

// sqlQuery = INSERT INTO TABLENAME Bar,Baz VALUES Foo,Foz