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Asked: 2026-05-31T05:22:49+00:00

I have a table in my database with one field declared as _id integer

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I have a table in my database with one field declared as 

_id integer primary key

There is no AUTOINCREMENT.

Here i have a doubt about how rowid will be updated during insert after a delete. what i observed is

  1. if the last row id is x and it is deleted, the next row inserted gets id x.

But if i delete some other rows with id < x and then insert a new row the rowid of the newly inserted row is x+1 .

Please confirm is my observation right ( rowid reused only if the last rows are deleted and not in between rows. )

I saw the explanation for AUTOINCREMENT. I want to know the behaviour when no AUTOINCREMENT is set

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1 Answer

  1. Editorial Team

    The AUTOINCREMENT keyword is not required for SQLite tables to generate primary key values automatically..
    what ever you add to the database will be added as the last row…so if u delete last row(x).. new element will be added at x position.. if you delete from middle or not.. new element on addition will go to x+1 position…

    on using auto increment.. if you delete last element at x position next id x+1 will be generated by autoincrement algorithm.. makin the next addition at x+1 position..

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