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Asked: 2026-05-14T18:40:05+00:00

On insert I am catching the unique constraint mysql_errno() 1062. This works fine but

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On insert I am catching the unique constraint mysql_errno() 1062.

This works fine but I want to find the existing row to re-instate or modify it.

Is there are method to obtain the row id on insert fail? I tried mysql_insert_id() but realised that would only return the row I’m inserting (or failed to insert) therefore, I get 0.

Is there no option but to issue another mysql_query and simply perform a select on the duplicate value?

I just want to make sure there is no better, quicker, more economical way to do this.

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1 Answer

  1. Editorial Team

    If you are attempting to insert a row if new or update existing values then REPLACE INTO is what you need. Also consider INSERT … ON DUPLICATE KEY UPDATE Syntax if there are constraints involved as REPLACE INTO will DELETE and then INSERT.

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