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Asked: 2026-05-15T10:54:44+00:00

I want to have two different tables in MS SQL, for example users and

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I want to have two different tables in MS SQL, for example users and groups, both with identity column. It is possible to create auto increment over two identity columns? I want to have third table with common informations to these two tables and I want to identify unique record.

In Oracle is SEQUENCE.

It is possible to do it?

Thanks,

Martin Pilch

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  1. Editorial Team

    Afaik, SQL Server does not have a concept where you can use a named identity in multiple tables (cfr. Oracles SEQUENCE)

    You have a few options to differentiate the data coming from both tables

    • Use a GUID as your ID column in both tables.
    • In your third table, manipulate the ID of one of both tables resulting again in a unique ID (Multiply with -1 for instance). I am assuming your third table would be a view on both other tables.
    • Rethink your design as to why you would need such a construct.

    If the design can’t be changed, using a GUID would be my choice of preference.

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