[erlang-questions] Changing primary key with mnesia:transform_table

Anders Nygren <>
Tue Mar 10 18:34:42 CET 2015


I just discovered that it is not possible to modify the value of the key
when using mnesia:transform_table.

- I can not find anything in the documentation specifying that it is not
allowed.

- Why is it not possible to do this?

- is there any way to do this except, first doing mnesia:transform_table
that does the transformation but without changing the key, and then
iterating over the table and modifying the key, i.e. read, delete, and
write modified?

Anders
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