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Code snippets

Copy-ready answers to everyday coding questions, each with a short explanation. Laravel, PHP, JavaScript, SQL, Bash and more.

1 snippet tagged #cleanup · Show all

SQL October 20, 2026 MySQL find and delete duplicate rows keeping the lowest id Finds rows that repeat a column value and deletes all but the one with the smallest id. Run the SELECT first to preview what will be removed, and back up the ta... -- Preview duplicates SELECT email, COUNT(*) AS total FROM users GROUP BY email

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