sqlite no such table exception in telegram

I've downloaded and installed telegram and I am trying to add another table to its databases but it says there is no such table. so after reading many of questions and answers here I thought I should re-install the telegram so i did that but still the same exception. I really don't know what to do and after installation every altered table can't be found either. if i want to ask a simple question it would be: how can I create and change tables in telegram API?and how can i fix these existing issues. thanks in advance.