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Editorial Team
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Asked: 2026-05-24T08:58:29+00:00

I have an image gallery which website members can upload images to. When an

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I have an image gallery which website members can upload images to. When an image is uploaded, a MySQL row is written, containing various pieces of information about the image, member, etc. This row uses AUTO_INCREMENT to create its ID, so that getimage.php?id=XX can fetch the image to be displayed.

I loop through the IDs with a for-loop to display the images within the gallery.

If I delete the 5th row/image, for example, the AUTO_INCREMENT goes from 123456789 to 12346789.

I would like to re-assign the ID to each row in the MySQL table, starting from the ground up. So 12346789 becomes 12345678. How would I achieve this?

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  1. Editorial Team

    I found this to work perfectly and quite quickly so here it is:

    ALTER TABLE tablename DROP id

ALTER TABLE tablename ADD id INT NOT NULL AUTO_INCREMENT FIRST, ADD PRIMARY KEY (id), AUTO_INCREMENT=1

    I know this isn’t the proper approach however for my specific situation this is exactly what was needed. There is nothing within the table I was using that is referred to either from or to another table.

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