Adding an identity to an existing column

Question

I need to change the primary key of a table to an identity column, and there\'s already a number of rows in table.

I\'ve got a script to clean up the IDs to ensure

Answer 1

There is cool solution described here: SQL SERVER – Add or Remove Identity Property on Column

In short edit manually your table in SQL Manager, switch the identity, DO NOT SAVE changes, just show the script which will be created for the changes, copy it and use it later.

It is huge time saver, because it (the script) contains all the foreign keys, indices, etc. related to the table you change. Writting this manually... God forbid.