I\'m running Sql Server 2008 R2 and I need to enable Full-Text search on a view with a inner join. My problem is that I don\'t know how to create my Full-Text Index.
You can only create a full text index on an indexed view, that is why you are getting the error. To create full-text search on a table or view, it must have a unique, single-column, non-nullable index.
In other words, you should create your view something like this:
CREATE VIEW ViewSearch WITH SCHEMABINDING AS
SELECT Persons.P_Id AS ID, Persons.LastName, Persons.FirstName, Orders.OrderNo
FROM Persons
INNER JOIN Orders ON Persons.P_Id=Orders.P_Id
GO
CREATE UNIQUE CLUSTERED INDEX IX_ViewSearch ON ViewSearch (ID)
SQL full-text search builds a full-text index through a process called population, which fills the index with words and the locations in which they occur in your tables and rows. That is why you need a field that will uniquely identify you each row and that is why you need to make the view indexed.
More information here.