Change AppEngine DataStore Primary Key

I'm using JPA and for the primary key i have:

private String emailAddress;

Is it possible to update primary key emailAddress?


Not supported. at all. DataNucleus internals would almost certainly reject such a change.

Although this might be supported it is very dangerous, you better off crating a new kind of entity and replacing your existing objects with it.

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Joining two tables together with count

mysql left-join

i have two tables named: orders and user_details

Overwriting mobile responsive css of canvas woo theme

css wordpress canvas

I am using woo canvas theme for developing a website.I wanted to add custom css for mobile responsive layout.Canvas is responsive but I want to add custom css for changing font-sizes and so on. I am