Issues when reading from a database in an iPhone app

I am making an iPhone app for a school project that reads and writes to a database. I have managed to get my code to write to it but it won't read. Below is the code I'm using to read:

NSString * paths=[self getWritableDBPath];
const char *dbpath =  [paths UTF8String];
sqlite3_stmt    *statement;
static sqlite3 *database = nil;
if (sqlite3_open(dbpath, &database) == SQLITE_OK)
{
    NSString *querySQL = [NSString stringWithFormat: @"SELECT questionright, totalquestions, FROM results", nil];

    const char *query_stmt = [querySQL UTF8String];


    if (sqlite3_prepare_v2(database, query_stmt, -1, &statement, NULL) == SQLITE_OK)
    {

        while(sqlite3_step(statement) == SQLITE_ROW)
        {
            //code...
        }

        sqlite3_finalize(statement);
    }


    sqlite3_close(database);
}

Here is getWritableDBPath:

-(NSString *) getWritableDBPath {
NSString *myDB = @"appData.db";

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
return [documentsDir stringByAppendingPathComponent:myDB];

}

The reason it doesn't work is that the sqlite3_prepare_v2 if statement is never satisfied.

When I write to the database I copy it to documents.

I am quite sure the results table exists as I am able to write to it. Here is the original sql statement:

DROP TABLE IF EXISTS "Questions";
CREATE TABLE "Questions" ("QuestionID" INTEGER PRIMARY KEY  NOT NULL , "Question" TEXT, "RightAnswer" TEXT, "WrongAnswer1" TEXT, "WrongAnswer2" TEXT, "Done" BOOL, "Catagory" TEXT, "Audio" INTEGER);
DROP TABLE IF EXISTS "Results";
CREATE TABLE "Results" ("ResultID" INTEGER PRIMARY KEY  NOT NULL , "QuestionRight" INTEGER, "TotalQuestions" INTEGER, "Catagory" TEXT);

I did find a similar question on here but didn't think the answers were that relevant to me.

Thanks for your help.