Insert an auto-incremented primary key into an Access table

问题

We have a giant table in an Access database with over 500k records and no PK. Is it possible to insert an auto-incrementing primary key column into an already existing Access table?

回答1:

Yes, it is and can be done quite simply by editing the table and adding an autoincrement type field. The only rule is that you can only have one autoincrement per table.

来源：https://stackoverflow.com/questions/12609621/insert-an-auto-incremented-primary-key-into-an-access-table