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Home/ Questions/Q 7676727
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Editorial Team
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Editorial Team
Asked: May 31, 20262026-05-31T17:15:50+00:00 2026-05-31T17:15:50+00:00

I was wondering why auto_increment is spelled with an underscore, since primary key not

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I was wondering why auto_increment is “spelled” with an underscore, since primary key not null and such is not?

Is it because auto_increment is some old syntactical leftover or such?

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  1. Editorial Team
    Editorial Team
    2026-05-31T17:15:51+00:00Added an answer on May 31, 2026 at 5:15 pm

    Keys can be either primary or foreign, columns can be either null(able) or not null.

    There isn’t really an alternative increment option to auto_ – so it makes more sense to have it as one “word”.

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