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About the only thing I know about SQL Injection at this time is that I believe it's used for Hacking purposes; and I'm not interested in promoting Hacking.

Are there any other reasons you'd use SQL Injection?

Not that I can think of unless perhaps bug bounties but it's more for education rather than promoting hacking.

I get that, but if the one main use for it is in hacking systems or causing damage, then I'll probably sway away from it. If I get enough of an outcry to learn about it, then I'll dive down the proverbial Rabbit Hole to find the answers.