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Editorial Team
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Editorial Team
Asked: May 28, 20262026-05-28T01:50:23+00:00 2026-05-28T01:50:23+00:00

I am supposed to generate a partial random unique id to be stored as

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I am supposed to generate a partial random unique id to be stored as an identifier for users.

Criteria:

  1. 8 digits
  2. First 4 digits is of my own (for eg. the year)
  3. Last 4 digits can be anything random.

How do I use entity framework to make sure this id is unique? I don’t want to have a loop that generates then check the database. Can something like this be done in 1 database call?

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  1. Editorial Team
    Editorial Team
    2026-05-28T01:50:24+00:00Added an answer on May 28, 2026 at 1:50 am

    The only way to do this in a single call would be to call a stored procedure that generates the ID and checks uniqueness.

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