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

1 snippet tagged #unique-index · Show all

SQL October 20, 2026 MySQL INSERT ON DUPLICATE KEY UPDATE upsert Inserts a row, or updates it if a unique key already exists. The table needs a UNIQUE or PRIMARY KEY on the column you match. INSERT INTO page_views (page, views) VALUES ('/home', 1) ON DUPLICATE KEY UPDATE views = views + 1;

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