How to use Sql statement to find the minimum available id

This article mainly introduces "how to use the Sql sentence to find the minimum available id". In the daily operation, I believe that many people have doubts about how to use the Sql sentence to find the minimum available id. The editor consulted all kinds of materials and sorted out a simple and easy-to-use operation method. I hope it will be helpful for everyone to answer the doubt of "how to use the Sql sentence to find the minimum available id". Next, please follow the editor to study!

Select id from test a where not exists (select 1 from test where id=a.id+1) order by id

Disadvantages, do not start from 1.

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