This question just keeps changing with each iteration. I don't understand what you are asking. If the question is about your last query then I would say just use a...

The only truly correct answer here would be "way more than you should ever remotely consider using". That is ludicrous how many keys are allowed on a single table. I...

Can you post your table definitions as text instead of screen shots? See the first link in my signature for best practices when posting questions.

The error message you...