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Editorial Team
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Asked: 2026-05-11T19:50:52+00:00

A week or so ago some data got imported into a db table. Simple

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A week or so ago some data got imported into a db table. Simple table:

Id INT PK NOT NULL IDENTITY
Name VARCHAR(20)

Now, I noticed today that the first id starts at 0. Asking the kid, he was reseeding it during his testing. So the first entry was a zero. Was an accident.

I’m not sure how to best update the value. How can I push everything up one number? What pains me is that there’s also some FK dependencies. If I have Cascade Update, should that fix the dependencies?

Also, should I update each number (however I do that??) from the top down .. eg. from the highest number, then +1. Then go down.

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  1. Editorial Team

    First of all, why are you stressing? ID=0 is complete valid, if a bit unusual. (Note that Zero Is NOT NULL)

    If you really want to get rid of the 0:

    • add a dummy record,
    • note it’s ID,
    • If there are foreign keys pointing to Record 0, update them to the dummy record.
    • delete that record. (to advance the internal ID counter).
    • Just change ID 0 to that value.
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