I created a table that the primary_key is an id that the type is int(100) and AUTO_INCREMENT.
so I notice that even after deleting rows the "id" is still counting from a the former number and doesnt update it. can it cause problems? is there any way I can change that after the table is already have existing rows?
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Never store passwords in plain text or just their hash: it seems a no-brainier, but there are still plenty of people doing that. I present the why and how on this subject, offering my own real life solution that you can implement right away, bringin…