iOS - SQLite没有更新，但准备和步骤正在成功执行

The title is pretty much all the information I have because I cannot find an issue with the code. The same instance of database that is being used in the code below is able to successfully insert, delete and select, but this function does not work. No error code is retured(Always 0), and the program continues to run nominally after executing this function. The title is pretty much all the information I