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Editorial Team
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Asked: 2026-05-26T21:09:59+00:00

I’m working on a project for which I need to frequently insert ~500 or

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I’m working on a project for which I need to frequently insert ~500 or so records at a remote location. I will be doing this in a single INSERT to minimize network traffic. I do, however, need to know the exact id field (AUTO_INCREMENT) values.

My web searches seem to indicate I could probably use the last_insert_id and calculate all the id values from there. However, this wouldn’t work if the rows get ids that are all over the place.

Could anyone please clarify what would or should happen, and if the mathematical solution is safe?

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1 Answer

  1. Editorial Team

    A multirow insert is an atomic operation in MySQL (both MyISAM and InnoDB). Since the table will be locked for writing during this operations, no other rows will be inserted/updated during it’s execution.

    This means IDs will in fact be consecutive (unless auto-increment-increment option is set to something different than 1

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