Can't use uuid and create an extension to use it

问题:

I want to use uuid in Postgresql 9.2 on Ubuntu 13. So when I tried to check whether is available or not, I did:

select uuid_generate_v4() as one; 

And it gave me ERROR: function uuid_generate_v4() does not exist

Then I did CREATE EXTENSION "uuid-ossp";

ERROR:  could not open extension control file "/usr/share/postgresql/9.2/extension/uuid-ossp.control": No such file or directory 

Well, what do I do next?

By the way, SELECT * FROM pg_available_extensions; returns plpsql (1.0) only.

回答1:

The operating system package that contains the extension is not installed. To install it:

apt-get install postgresql-contrib-9.2 

回答2:

If you still get the error, try to run manually the two SQL files inside /usr/share/postgresql/9.X/extension/uuid-ossp*.sql into your database

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