Question

hello guys i am doing some database operations in iphone .. please can anyone explain me how to retrieve all rows from the table..here in this example it retreives only the latest entered data..

while(sqlite3_step(statement) == SQLITE_ROW)
    {   
        char *field1 = (char *) sqlite3_column_text(statement,0);
        NSString *field1Str = [[NSString alloc] initWithUTF8String: field1];
        char *field2 = (char *) sqlite3_column_text(statement,1);
        NSString *field2Str = [[NSString    alloc] initWithUTF8String: field2];

        NSString *str = [[NSString alloc] initWithFormat:@"%@::%@",field1Str, field2Str];
        textv.text=str;

        [field1Str release];
        [field2Str release];
    }

Answer 1

You were doing all right so far. Just keep adding the final formatted string (str) in an NSMutableArray and finally return it from the function.

// Take an array to store all string.
NSMutableArray *allRows = [[[NSMutableArray alloc] init] autorelease];

while(sqlite3_step(statement) == SQLITE_ROW)
    {   
        char *field1 = (char *) sqlite3_column_text(statement,0);
        NSString *field1Str = [[NSString alloc] initWithUTF8String: field1];
        char *field2 = (char *) sqlite3_column_text(statement,1);
        NSString *field2Str = [[NSString    alloc] initWithUTF8String: field2];

        NSString *str = [NSString stringWithFormat:@"%@::%@",field1Str, field2Str];
        // textv.text=str; // I don't know why your are mixing your view controller stuff's in database function.
// Add the string in the array.
allRows addObject:str];

        [field1Str release];
        [field2Str release];
    }

// Finally you can return your allRows
return allRows;