Sql Random statement help on xcode and uilabel -

i making first app quiz game. managed until create database sqlite , load categories table uitableview. need on how create next single screen load questions , it's answers labels specific category choise , how represent on fields. hope can understand problem. thank in advance!

ok managed import question table labels. here code:

-(nsmutablearray *) categorieslist{ categories = [[nsmutablearray alloc] initwithcapacity:10]; @try {     nsfilemanager *filemgr = [nsfilemanager defaultmanager];     nsstring *dbpath = [[[nsbundle mainbundle] resourcepath ]stringbyappendingpathcomponent:@"categories.sqlite"];     bool success = [filemgr fileexistsatpath:dbpath];     if(!success)     {         nslog(@"cannot locate database file '%@'.", dbpath);     }     if(!(sqlite3_open([dbpath utf8string], &db) == sqlite_ok))     {         nslog(@"an error has occured: %s", sqlite3_errmsg(db));      }       const char *sql = "select * questions category 1";     sqlite3_stmt *sqlstatement;     if(sqlite3_prepare(db, sql, -1, &sqlstatement, null) != sqlite_ok)     {         nslog(@"problem prepare statement:  %s", sqlite3_errmsg(db));     }else{          while (sqlite3_step(sqlstatement)==sqlite_row) {              categories * choise = [[categories alloc] init];             question.text = [nsstring stringwithutf8string:(char *) sqlite3_column_text(sqlstatement, 1)];             answer1.text = [nsstring stringwithutf8string:(char *) sqlite3_column_text(sqlstatement, 2)];             answer2.text = [nsstring stringwithutf8string:(char *) sqlite3_column_text(sqlstatement, 3)];             answer3.text = [nsstring stringwithutf8string:(char *) sqlite3_column_text(sqlstatement, 4)];             answer4.text = [nsstring stringwithutf8string:(char *) sqlite3_column_text(sqlstatement, 5)];             [categories addobject:choise];          }     }     sqlite3_finalize(sqlstatement); } @catch (nsexception *exception) {     nslog(@"problem prepare statement:  %s", sqlite3_errmsg(db)); } @finally {      sqlite3_close(db);      return categories; } 

} @end

can explain me how make random choose of questions labels , go next question of same category?thank in advance