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Asked: 2026-05-20T22:47:41+00:00

I have data in a MySQL table with a unique key. I want to

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I have data in a MySQL table with a unique key. I want to import more recent data that is stored in a CSV at the moment. I would like it to overwrite the old data if the key already exists, or create a new row if the key does not exist. Does anyone know how to this in MySQL?

Thank you for your help!

Jeff

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1 Answer

  1. Editorial Team

    Use INSERT ... ON DUPLICATE KEY UPDATE.

    INSERT INTO table (column) VALUES ('value') ON DUPLICATE KEY UPDATE column='value'
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